What Sizes Do Fiberglass Pools Come In?

Posted on October 14, 2022June 19, 2026 by kristin

Most people shopping for a fiberglass pool already know they want one. The harder question is what size actually fits your yard, your family, and the way you plan to use the pool. The range is wider than most people expect, from compact plunge pool models and small fiberglass pools to full-size 16′ x 41′ designs with room for lap swimming and a crowd. Choosing the right size starts with three factors: available yard space, how many people will use the pool, and whether you want it for lounging, play, exercise, or entertaining.

Why Fiberglass Pool Width Stops at 16 Feet

Before getting into specific sizes, there is one constraint that shapes the entire fiberglass pool industry: width.

Fiberglass pools ship as one-piece shells. This construction method supports faster installation, eliminates liner seams, and creates a strong one-piece shell, but it also means the pool must travel by road to reach your backyard. Most states set an oversized load limit of 16 feet, capping fiberglass pool width for every manufacturer. If your plans call for a pool wider than 16 feet, a custom concrete or vinyl liner build is the path to get there. For most residential backyards, 16 feet of pool width is more than enough to enjoy with a large family, and while entertaining guests.

Small Fiberglass Pool Sizes: Plunge Pools and Compact Designs

Small fiberglass pools generally fall under 400 square feet. Plunge pools, sometimes called cocktail pools or spools, occupy the smallest end of this range, typically 8 to 12 feet wide and 16 to 26 feet long.

These pools work well when yard space is limited, when you want the pool to complement your outdoor living area rather than dominate it, or when a smaller footprint makes more financial sense. The Thursday Pools Plunge Pool Series is built specifically for this range. Small fiberglass pools are best for homeowners who want cooling, lounging, or light exercise more than open swim space.

Pool Model	Dimension	Depth	Square Feet
The Drift	8’4″ x 16′	4’8″ flat bottom	134
The Nest	8’4″ x 16′	4’8″ flat bottom	134
The Nook	8’4″ x 16′	4’8″ flat bottom	134
Sea Turtle	9.5′ x 19.5′	4’6″ flat bottom	185
Titus	12′ x 26′	5’5″	300
Aspen	12′ x 25′	5’1″	300
Goliath	12′ x 25′	5’4″	300

The Nest, The Nook, and The Drift share the same 8’4″ x 16′ footprint and 4’8″ flat-bottom depth, but each uses the space differently. The Drift has a full-length wraparound bench for lounging. The Nook uses bench seating on both sides. The Nest keeps a more open swim area with full-width entry steps. Sea Turtle steps up to 9.5′ x 19.5′ at 4’6″ flat-bottom depth and has a swim-jet-ready design for light exercise.

Medium Fiberglass Pool Sizes: The Most Popular Range for Families

Medium-size fiberglass pools, roughly 13 to 16 feet wide and 28 to 37 feet long, give most families the balance they need. There is enough length for laps and active play, enough width to move around comfortably, and room for the kids without the pool consuming the entire backyard.

This is also where the widest variety of design options lives, from sport-depth flat-bottom pools to models with tanning ledges, integrated spas, and beach entries.

Pool Model	Dimension	Depth	Square Feet
Pearl	15’ x 25’	3’9”	375
Lil Bob	13.5′ x 27.5′	4’6″ flat bottom	371
Lil Bob LX	13.5′ x 35.5′	4’6″ flat bottom	479
Spirit	13.5’ x 40’	4’6″ flat bottom	540
Cathedral	14’ x 33’	5′	462
Titus	14’ x 33’	5’10”	462
Sun Day	15′ x 30′	5’4″	450
Aspen	14′ x 30′ / 14′ x 35′ / 16′ x 35′	5’5″	420 – 560
Goliath	14′ x 29′ / 14′ x 33′ / 16′ x 33′	5’8″ – 6′	406 – 592
Grace Beach Entry	14′ x 36′	5’6″	504

Large Fiberglass Pool Sizes: Maximum Room to Swim and Gather

Large fiberglass pools start around 16′ x 39′ and top out at 16′ x 41′. At this scale, the pool becomes the primary focus of the backyard. The design, depth, and feature set matter as much as the footprint. Large models make the most sense when the pool will be used for frequent entertaining, active swimming, or as the main feature of the outdoor space.

Pool Model	Dimension	Depth	Square Feet
Mack Daddy	16′ x 36′	4’8″ flat bottom	576
Magnate	16′ x 36′	4’8″ flat bottom	576
Grace Beach Entry	16′ x 36′ / 16′ x 40′	5’6″ – 5’10”	576 – 640
Wellspring	16’ x 36’ / 16′ x 40′	5’10”	576 – 640
Cathedral LX	16’ x 36’ / 16′ x 40′	5’8” – 6′	576 – 640
Aspen	16′ x 35′ / 16’ x 40’	5’5″ – 5’10”	560 – 640
Big Bob	16′ x 40′	4’6” flat bottom	640
Monolith	16′ x 40′	8’6″	640
Sandal Beach Entry	16′ x 34.5′ / 16′ x 39′	5’8” – 6′	552 – 624
Sun Day	16′ x 34.5′ / 16′ x 39′	5’8” – 6′	552 – 624
Goliath	16′ x 37′ / 16′ x 41′	6’4” – 6’8″	592 – 656

At this scale, Big Bob is a 16’ x 40’ rectangle offering a uniform 4’6” flat-bottom depth throughout. It’s the largest pool in the Bob family, built for homeowners who want maximum bench seating, a wide-open swim and play area, and room to comfortably host a crowd. Monolith is at the opposite end of the depth range, with an 8’6″ deep end that makes it the only Type 1 diving pool in Thursday Pools’ lineup.

How to Choose the Right Fiberglass Pool Size for Your Backyard

Size on paper and size in your yard are different things. A 16′ x 40′ pool can be exactly right for a spacious lot and feel overwhelming in a modest suburban backyard. A few practical factors to weigh before committing:

Yard dimensions and required setbacks: The pool needs clearance from property lines, fences, utilities, and structures. A local dealer can evaluate your specific lot before you choose a model.

How you plan to use it: A family of four that swims laps and plays water basketball needs a different pool than a couple looking for an evening plunge. Intended use matters more than square footage.

Budget, including long-term operating costs: Longer pools cost more to install and maintain. A larger water volume takes more energy to heat and more chemicals to balance. Factor those ongoing costs into the size decision, not just the installation price.

Space for everything else: The pool is one part of the backyard. Consider how much room you want for decking, seating, landscaping, and lawn before settling on a size.

Try out the Thursday Pools Pool Selector Tool to compare models by yard size, preferred features, and planned use.

Ready to Find the Right Size?

The right pool size depends on how you will use it, what your yard can accommodate, and what your budget supports. A local Thursday Pools independent dealer can evaluate your property, confirm available models, and provide an installation estimate for your site.

Frequently Asked Questions About Fiberglass Pool Sizes

What is the most common fiberglass pool size?

Many residential fiberglass pools fall in the 13- to 16-foot-wide by 30- to 40-foot-long range because that size balances swim space, yard impact, and budget. Most families find that range strikes the right balance of swim space, yard impact, and budget. Plunge pool models in the 8′ x 16′ to 12′ x 26′ range have grown in popularity as homeowners prioritize lower-maintenance options and want to preserve outdoor living space beyond the pool itself.

What is the maximum size for a fiberglass pool?

Most fiberglass pools max out at 16 feet wide and 41 feet long. The 16-foot width limit comes from highway transportation regulations. Fiberglass pools ship as one-piece shells, and most states set 16 feet as the oversize load limit for road transport.

What is the smallest fiberglass pool size available?

The smallest fiberglass pools typically start around 8 to 10 feet wide and 14 to 16 feet long. Thursday Pools’ smallest models, including The Nest, The Nook, and The Drift, all measure 8’4″ x 16′ with a 4’8″ flat-bottom depth. These compact designs fit smaller backyards, courtyard spaces, and lots where a full-size pool is not practical.

How wide can a fiberglass pool be?

The practical maximum is 16 feet wide for a fiberglass pool. Because fiberglass pools ship as single-piece shells, they are subject to highway transportation width limits, which most states set at 16 feet.

What size fiberglass pool is best for a family of four?

For a typical family of four with kids, a pool in the 13.5′ x 35′ to 16′ x 40′ range tends to work well, with enough open swim area for games and laps while still fitting most residential lots. Flat-bottom models at 4’6″ depth, like the Lil Bob LX, Spirit, or Big Bob, are well-suited for families with younger children because swimmers can touch the bottom anywhere in the pool. For smaller yards or families who prioritize lounging over active swimming, a compact model like the Sea Turtle or Lil Bob can be a better fit.

Does pool size affect cost?

Yes, significantly. Longer and wider pools require more excavation, more backfill, more decking, and larger volumes of water to fill and maintain. As a general benchmark, plan on roughly $1,800 per foot of pool length for an installed fiberglass pool, though that figure varies based on location, site conditions, and the features added. A 16′ x 40′ pool will cost more to install and operate than a 12′ x 25′ model, both upfront and in ongoing heating, chemical, and water costs. A local dealer can give the most accurate estimate.

Can a fiberglass pool be too big for a backyard?

A pool can overpower a yard if the size does not match the available space and how the rest of the lot will be used. Beyond the pool shell, you need room for decking or patio, required setbacks from property lines and structures, and ideally some remaining yard for landscaping or outdoor living. A local Thursday Pools dealer can evaluate your property and recommend sizes that work within your specific lot.

What is a plunge pool, and how does it differ from a standard fiberglass pool?

A plunge pool is a smaller, shallower pool designed primarily for cooling off, relaxing, and light social use rather than lap swimming or active recreation. Plunge pools typically range from 8 to 12 feet wide and 14 to 26 feet long with flat-bottom depths around 4’6″ to 5’5″. They cost less to install and maintain than full-size pools and work well in smaller yards or as a complement to an existing outdoor living space.

What is the smallest fiberglass pool size?

Posted on October 14, 2022June 11, 2026 by kristin

Inground fiberglass pools create a unique aesthetic for the backyard, but homeowners with smaller backyards often think they don’t have room for the more elegant option. Fortunately, more options exist in small fiberglass pools than ever before. This post will answer “what is the smallest fiberglass pool size?” and other common questions for homeowners with smaller yards.

What is the smallest inground pool size?

Before answering the primary question of this blog post, let’s first give you some context. We generally categorize an inground pool as “small” if it measures 400 square feet or less. Depending on the dimensions, a small pool can be used for soaking, wading, swimming laps, or incorporating water features.

What is the smallest fiberglass pool size?

While pool manufacturers’ all develop different pool designs and sizes, Thursday Pools has several different small fiberglass pool designs, with the smallest being a wading pool that is nine by nine feet. Here are some of the smaller fiberglass pool designs (under 400 square feet) and their measurements:

Thursday Pools Pool Design	Dimensions	Square Feet
Wading Pool 1	9′ x 9′ 1’6″	81 ft2
Pearl	15′ x 25′ 3’9″	375 ft2
Sea Turtle	9.5′ x 19.5′ 4’6″	185.25 ft2
Aspen (also comes in four larger sizes)	12′ x 25′ 5’1″	300 ft2
Titus	12′ x 26′ 5’5″	312 ft2
Cathedral	14′ x 33′ 5′	462ft2
Lil Bob	13.5′ x 27.5′ 4’6″	371.25 ft2

What is a cocktail pool?

A cocktail pool is another term for a small pool that measures under 400 square feet and is approximately four feet deep. In fiberglass cocktail pools, you’ll find built-in beverage and wrap-around benches that provide places to soak and socialize. It’s a veritable cocktail party in the pool.

What is a plunge pool?

Plunge pools are also small pools but often deeper than cocktail pools. While cocktail pools are shallow and commonly used for relaxing, plunge pools are deep enough to allow for more activity, such as exercise and playing games. However, they may not offer wide-open swimming for a group of people. Plunge pools can also serve as a focal point for socializing.

What is the smallest pool you can swim laps in?

You don’t need an Olympic-size pool to swim laps. Even with a small pool, getting a few laps in is possible. Some small pools can be equipped with strong jets and pressure currents that create a flow of moving water. Activating these features allows you to swim “laps” without actually moving.

What to consider when buying a pool for a small backyard

Local building restrictions

Clearance restrictions may apply between the pool and your home and property lines. Zoning regulations and HOA restrictions can also impact pool size and layout options. An expert pool contractor will be familiar with federal restrictions and local requirements pertaining to your pool.

Amount of space

As a guideline for your own comfort, limit your pool size to not exceed 25 percent of your yard space. For example, a pool should not exceed 24 feet long by 12 feet wide for a lawn that measures 1,200 square feet or less.

Best pool for your needs

One of the most important considerations is how you plan to use your pool. A wading pool may be just what you need for a beautiful aesthetic and relaxation. If you are entertaining, you may want a deeper pool with plenty of seating or a flat-bottom pool for playing games. Another essential factor to consider is other backyard activities and the space required. Do you need open lawn space for play? How much patio space will you need?

The best small pool for you

Choosing a pool is personal. If you’re uncertain about which pool is best for your backyard, try out our pool selector tool as a starting point, or let us get you in touch with an independent dealer near you.

Small Fiberglass Pools: Sizes, Costs, and Shapes for Compact Backyards

Choose Your Pool Color

Is a Pool Worth It? Considering the Pros and Cons

Posted on August 5, 2022June 11, 2026 by kristin

When the summer heat rolls in, owning a pool can seem like a dream come true. The last thing any homeowner wants to experience is swimming pool buyer’s remorse, so it’s essential to consider, “Is a pool worth it?” The answer may differ depending on your goals, budget, and the type of pool you want. If you’re considering inground vinyl vs. gunite vs. fiberglass pools, you might want to compare their durability and lifespans. You can learn more about fiberglass pools in our guide, which answers the question, “How Long Does a Fiberglass Pool Last?” For now, let’s explore the pros and cons of simply owning an inground pool.

WHAT ARE THE PROS OF POOL OWNERSHIP?

Convenience and Privacy: The pool is always there. You can swim when you want. Public pools have set hours, and you have to plan around their availability. With your pool, you decide if you will take a dip at high noon or midnight. No more having to pack up and drive to your next swimming adventure. Having a pool outside your back door makes getting in the pool much more convenient! Plus, there’s the added benefit of privacy. You have complete control over who uses your pool and when creating a personalized and secure environment.

Increased Home Value: One of the primary reasons homeowners consider installing a pool is the potential increase in home value. A pool can be a desirable feature that sets your property apart from others on the market. A well-maintained pool can attract buyers and, in some cases, lead to higher resale value. However, it’s worth noting that the amount a pool adds to home value varies greatly depending on location, the type of pool, and the condition you keep it in. If we say so ourselves, a fiberglass pool can be a great selling point due to its longevity and low-maintenance reputation.

You Control the Aesthetic: One of the often-overlooked advantages of having a pool in your backyard is the ability to control the aesthetic. While you may not care much about the color or design of a public pool, creating a personalized pool experience can be incredibly satisfying. You can choose the shape, color, and design that suits your home and personal preferences. Want a sleek, modern look with a neutral tone or perhaps a more vibrant, tropical escape with bold blues and greens? It’s all up to you!

Entertainment and Socializing: “Value” has many different meanings. For example, if your pool gives your home a luxurious, resort-like feeling, you may feel like it adds value to your life. If you love to entertain or spend time with family and friends, your pool can become the hub of your social life. Pool parties, barbecues, and outdoor gatherings can all seem better with a pool as a centerpiece. It provides an inviting environment for guests of all ages, offering endless fun and enjoyment, especially in summer.

Health and Fitness Benefits: A pool offers fantastic opportunities for exercise and relaxation, making it an appealing feature for families and fitness enthusiasts. Having a pool encourages a more active lifestyle, providing easy access to daily exercise without leaving your home. Pools can also be a place of relaxation, allowing for stress relief after a long day. The sound of water and the calming nature of swimming or simply lounging poolside can promote mental well-being.

WHAT ARE THE CONS OF POOL OWNERSHIP?

Ongoing Maintenance and Upkeep: Pools require regular upkeep, including cleaning, balancing chemicals, and making necessary repairs. Neglecting maintenance can lead to costly repairs, so it’s important to factor in the time and money it will take to keep your pool in good shape. Fiberglass pools have a distinct advantage here. They require less maintenance compared to vinyl or concrete pools, mainly because the smooth surface resists algae growth and is less prone to staining. However, even fiberglass pools will need regular care to ensure they stay in excellent condition over time. Pool service companies can help you with maintenance and advise you on how to take care of your pool. Regarding fiberglass pools specifically, following any guidelines and care recommendations the manufacturer provides you is essential.

High Initial Costs: The upfront cost is one of the biggest drawbacks to owning a pool, as installing any inground pool is a significant financial investment. While fiberglass pools offer a high return on investment due to their durability and lower maintenance costs, their upfront costs are significantly more expensive than going to your local public pool.

Seasonal Limitations: Depending on where you live, a pool might only be usable for part of the year. Pool owners need to close their pools during the off-season in regions with cold winters. While heated pools or indoor installations can extend the swimming season for pool owners, this comes with additional costs.

CONTINUE YOUR QUEST

Considering pool ownership’s pros and cons, you’re probably another step closer to answering whether a pool is worth it. For more information that may inform your decision, check out our eBook on the “things I wish I knew before getting a pool.” If you’d like more information on fiberglass pools, see our resources page and pool cost calculator. If you’d simply like to skip to some advice, book a consultation to speak with an independent dealer to get more specific information for your pool project.

How Long Does a Fiberglass Pool Last?

Where to Find a Fiberglass Pool Dealer Near You

Posted on May 11, 2022June 11, 2026 by kristin

In researching inground pools, you’ve likely compared the different types available, including gunite, vinyl-lined, and fiberglass pools. And perhaps that hunt has you leaning toward an inground fiberglass pool. A natural next question for you might be, “Where can I find fiberglass pools near me?” While entering “fiberglass pools near me” into a search engine will return pool dealer results (and paid advertisements) based on your location, purchasing an inground fiberglass pool is a big deal so, here are our top tips when searching for a fiberglass pool dealer near you.

Selecting a Fiberglass Pool Dealer

Don’t just go with the first dealer you find. We recommend talking to a few. It’s essential that you feel comfortable with them. After all, these folks will be working in your backyard for at least a couple of weeks.
Get multiple estimates. It’s helpful to get more than one estimate to know that you are on track and not missing something significant in communicating your wants and needs and the dealer’s capabilities.
Ask for referrals. A quality dealer should have referrals at the ready when asked. You can also go online for reviews. Either way, make sure that the referrals or reviews are recent and not from several years ago.
Talk to other pool owners. Neighbors or friends with fiberglass pools are good sources. And so are home builders and landscape architects as they often subcontract pool dealers.
Check online review sites. Beyond Google and Facebook, there are services like the Better Business Bureau or Home Advisor that can help distinguish the best pool dealers from their competition.
Talk to pool manufacturers. You may have zeroed in on a pool and pool manufacturer you like in your research. A fiberglass pool manufacturer can let you know what dealer services your area and get the two of you connected.

Make Sure You Like the Manufacturers that the Dealer Carries

These are a few of the most common reasons we hear homeowners say they have gone with Thursday Pools when given a choice between inground fiberglass pool manufacturers. They say Thursday Pools inground fiberglass pools are:

Drop-dead gorgeous. Thursday Pools uses a high-grade gel coat available to produce a dazzling shimmer. Aside from the good looks, the gel coat also has UV protection and resists the ravages of chemicals, osmosis, and algae.
Durable. The combination of resin, chopped fiberglass, woven roving fiberglass, and honeycomb core creates a nine-layer composite that helps make the industry’s most durably crafted fiberglass composite pool.
Complete with options. Freeform, rectangle, Roman, round, and square. With several different shapes, a good number of designs and sizes, and a variety of available features, there is a pool for practically every lifestyle.
Quicker to install. During typical and precedent pool seasons, inground pool installers of other types might give you a timeline of three to six months. An independent Thursday Pools dealer could have you closer to three to four weeks. Always consult with your dealer early on in the process so you know where you will likely fall in their installation schedule.
Focused on innovating. Thursday Pools is dedicated to continuous improvement, being good stewards of the environment, and finding new solutions to make fiberglass pools highly durable.
Feature-rich. Features you may have only found in resort pools a few years ago, like tanning ledges and zero-entry, are now easily found when browsing through the Thursday Pool Idea Book and matching up your family’s desires to one of the many pool designs.
Backed by helpful people. With resources about everything from budgeting and financing to providing creative ideas for the installation and build-out, customers and dealers love the array of resources Thursday Pools provides.

Explore Pool Designs

When searching for fiberglass pools near me, the initial results might lull you into thinking there are only a few design options available. Perhaps you’ve seen a showroom floor model, or you have a couple of neighbors with a similar design. These experiences may cloud your vision of what you can access. Exploring the Thursday Pools website, you’ll discover an entire line-up of fiberglass pool shell shapes, sizes, and colors that can be ordered and delivered to your backyard for quick installation by an independent Thursday Pools dealer.

If you find a Thursday Pools design that piques your interest, we are happy to connect you with a trusted independent dealer near you who can answer all your questions.

Wanting a Pool in Your Small Yard?

Posted on April 26, 2022June 15, 2026 by krista

No matter the size of your yard, creating a staycation-worthy backyard is within reach. Small fiberglass pools fit compact spaces without sacrificing style, comfort, or function. They offer a low-maintenance, budget-friendly solution with options like plunge pools and other ultra-compact designs, making it easier than ever to add a beautiful, refreshing pool to even the smallest backyard.

Is a Small Pool Worth It?

Absolutely! Small pools offer a smart, stylish solution for homeowners who want all the benefits of a pool without overwhelming their outdoor space.

With a compact design, you’ll have more room for other backyard features—like a lounge area, firepit, or outdoor kitchen—so you can truly enjoy a well-rounded outdoor living space. Smaller pools also mean easier upkeep, lower chemical use, and reduced energy costs, making maintenance a breeze.

And when it comes to your budget, going smaller can free up funds for extras like built-in seating, a tanning ledge, or an automatic pool cover. Best of all, small fiberglass pools come in a variety of layouts to suit how you plan to use your space—whether that’s relaxing, exercising, or entertaining a few close friends.

What Are Some Small Pool Options?

Before exploring specific designs, it’s important to understand the three main types of inground pools. Each offers unique benefits, and the best choice depends on your space, budget, timeline, and how involved you want to be with long-term upkeep.

Concrete (Gunite) Pools

Install Time: Approximately 3 to 6 months
Maintenance: Around 4 to 5 hours per week
Cost: $50,000 to $120,000+
Customization: Fully customizable in shape, size, and features

Concrete pools are known for their design flexibility and durability. If you have a very specific vision for your pool’s shape or want to maximize every inch of your yard, concrete offers the freedom to create a one-of-a-kind layout. Keep in mind, though, they take the longest to install and tend to require more hands-on maintenance and chemical use over time.

Vinyl Liner Pools

Install Time: Approximately 4 to 8 weeks
Maintenance: About 2 to 3 hours per week
Cost: $25,000 to $65,000
Customization: Custom sizes and shapes available

Vinyl liner pools are more affordable upfront, and builders can tailor them to fit many different backyard configurations. They’re a practical option if you want some customization without the higher price tag of concrete. However, the vinyl liner will eventually need replacement, which adds to long-term upkeep and costs.

Fiberglass Pools

Install Time: About 3 weeks
Maintenance: Around 1 hour per week—or less
Cost: $30,000 to $85,000
Customization: Limited to pre-designed shapes and sizes

Fiberglass pools come pre-formed from factory molds, which speeds up installation and simplifies maintenance. While you won’t have as much design flexibility, many models are available in compact sizes with built-in seating, tanning ledges, and other features that make the most of smaller spaces. The smooth, non-porous surface also resists algae growth, meaning fewer chemicals and less time cleaning.

Each pool type brings something different to the table—whether it’s complete customization, affordability, or ease of care. If you’re working with a smaller yard, all three can be viable options depending on your goals and preferences. Talking with a pool professional can help you weigh the trade-offs and find the best fit for your backyard.

Small Backyard Pool Ideas

Whether you’re looking for a true plunge pool or just a space-saving pool design, there are plenty of options for full-size enjoyment in smaller spaces. Below are some of Thursday Pools’ most popular compact models, each offering unique features to fit your lifestyle and yard size.

Plunge Pool Options

These pools are deeper than they are expansive, perfect for cooling off, standing, soaking, or even light exercise. A plunge pool is ideal for homeowners who want the experience of a luxurious inground pool without the footprint of a full-size one.

Sea Turtle

Size: 9.5′ x 19.5′ | Depth: 4′6″

The Sea Turtle is a true plunge-style pool with a flat bottom and generous bench seating on both sides. It’s perfect for standing, stretching, or simply soaking on hot days—all while fitting comfortably into a smaller yard.

The Nook

Size: 8′4″ x 16′ | Depth: 4′8″

The Nook offers a balanced blend of comfort and practicality. With a built-in bench and consistent standing depth throughout, it’s ideal for water aerobics, casual conversation, or simply unwinding. Built-in entry steps and a non-skid surface make it a safe and easy-to-maintain plunge pool.

The Nest

Size: 8′4″ x 16′ | Depth: 4′8″

Petite and purposeful, The Nest is a compact plunge pool for relaxing, cooling off, and casual soaking. It features a flat bottom, wide entry steps, and is auto-cover ready—making it a stylish solution for tight spaces.

Other Compact Pool Options

These pools aren’t plunge-style, but still work well in smaller yards. They offer more swimming space and family-friendly layouts, often with added seating or space for games.

Lil Bob

Size: 13.5′ x 27.5′ | Depth: 4′6″

Lil Bob is all about flexibility. With wrap-around bench seating and a flat, even depth, it’s great for light swimming, games like water volleyball, or simply lounging with friends. It’s a compact design with room to move.

Titus

Sizes:

12′ x 26′ | Depth: 5′5″
14′ x 33′ | Depth: 5′10″

Titus offers a larger swim area while still fitting in smaller backyards. Its rounded shape and built-in seating create a comfortable space for both activity and rest. It’s a good choice if you want a pool that supports swimming as well as relaxation.

Wading Pool

Sizes:

9′ x 9′ | Depth: 1′6″
11′9″ x 13′9″ | Depth: 1′6″

Great as a stand-alone feature or a pool add-on, the Wading Pool is ideal for small children, a quick dip, or cooling off without getting fully in. It offers shallow, safe fun in a small footprint.

Wet Deck

Size: 8’1” x 14′ | Depth: 1′

The Wet Deck is a shallow splash zone perfect for sunbathing or letting young children play. Use it alongside another pool or on its own as a refreshing, low-maintenance backyard water feature.

Ready to Make a Small-Pool Splash?

Small yard? No problem—smart design and the right pool can help you make a big splash anywhere. Whether you prefer a traditional fiberglass pool, a plunge pool, or a more compact design, there’s a perfect option to fit your space, style, and budget. Connect with a Thursday Pools dealer to explore what’s possible, check out the Pool Cost Calculator for a quick estimate, and browse our Idea Book for extra inspiration.

Thursday Pools Rectangle Fiberglass Pool Shell Options by Size, Depth, and Features

Posted on April 18, 2022June 19, 2026 by krista

Rectangle fiberglass pools come in more variety than many buyers expect. The shape is consistent, with clean lines, straight walls, and sharp corners, but size, depth, and built-in features vary by model. The right shell depends on your yard size, how you plan to swim, and whether you want lounging space, sport depth, a beach entry, a spa, or a deep end.

Compact Rectangle Fiberglass Pool Shells

These models are part of Thursday Pools’ Plunge Pool Series, built for smaller backyards, courtyard spaces, and homeowners who want a genuine pool experience in a compact footprint. All three share the same 8’4″ x 16′ rectangle shell at 4’8″ flat-bottom depth. Sea Turtle offers a slightly larger 9.5′ x 19.5′ rectangle shell. The smallest sizes of Aspen and Goliath are also part of the Plunge Pool Series with 12’ x 25’ rectangle shells.

The Drift

The Drift is designed for lounging as much as swimming. Its full-length wraparound bench supports social gatherings, cool evening dips, and extended relaxation.

A full-length wraparound bench creates a comfortable seating zone without giving up the swim area.
Built-in steps and a non-skid surface throughout provide safe, easy entry and exit for all ages.

The Nest

The Nest maximizes open water in the smallest Thursday Pools rectangle shell. Full-width entry steps and a clean, unobstructed swim area make it the most activity-forward of the three 8’4” x 16’ options.

Full-width entry steps provide a wide, easy point of entry.
The open interior layout keeps the swim area clear for exercise and play.

The Nook

The Nook brings minimalist design and integrated seating to the compact rectangle format. It works well as a private courtyard pool or as a compact water feature beside a patio, outdoor kitchen, or seating area.

Integrated wraparound bench seating lines both sides of the pool.
Built-in steps and a non-skid flat-bottom surface throughout.

Sea Turtle

Sea Turtle steps up to a 9.5′ x 19.5′ rectangle shell at 4’6″ flat-bottom depth. It suits smaller yards that need a bit more swim room than the 8’4″ x 16′ models provide, and adds a swim-jet-ready design for light exercise.

A 4’6” flat-bottom depth throughout allows comfortable standing, socializing, and light activity.
Wraparound benches flank the entry steps, creating a relaxed conversation area.
Swim-jet-system-ready design makes it easy to add a resistance swim system like Badu®.

Sport and Social Rectangle Fiberglass Pool Shells

These models share a flat-bottom sport-depth design, making them well-suited for water games, family play, and active use. All maintain a consistent standing depth of 4’6″ to 4’8″ throughout the pool.

Lil Bob

Lil Bob is built around a 13.5′ x 27.5′ flat-bottom shell at 4’6″ throughout. It’s a strong choice for families who want a sport-focused pool that keeps kids and adults in the game together.

Full-width ergonomic steps make it easy for everyone to enter and exit the pool.
A standing-depth, flat-bottom design makes Lil Bob a great size for water volleyball.
Two facing benches, each 12 feet long and 18 inches deep, run down both sides of the pool, leaving a clear open swim area in the center.

Lil Bob LX

Lil Bob LX extends the Bob family formula to a 13.5′ x 35.5′ shell with a 4’6” sport depth, adding a tanning ledge and wading area while keeping the flat-bottom sport depth.

A tanning ledge accommodates two lounger chairs while leaving room to enter and exit the pool.
A wading area just past the tanning ledge gives younger swimmers a comfortable shallow zone.
Generous wraparound benches run along both sides of the open swim area.

Big Bob

Big Bob is the largest pool in the Bob family. It’s a 16′ x 40′ flat-bottom rectangle with a uniform 4’6″ depth throughout. It gives families who love the Bob design more of everything: more bench space, more open water, and more room for games and laps.

Extra-long wraparound benches, 12 feet long and 18 inches deep, run down both sides of the pool.
Wide walk-in steps make getting in and out easy for swimmers of every age.
The open 16′ x 40′ swim and play area accommodates lap swimming, water volleyball, basketball, and active family games.

Spirit

Spirit runs 13.5′ x 40′ at a flat-bottom depth of 4’6″, giving it one of the longest open swim lanes in the sport-depth rectangle category. Spirit is best for homeowners who want lap-friendly length while keeping the entire pool at a comfortable standing depth.

The court-sized flat-bottom design gives swimmers and players plenty of room.
Extended bench seating and full-length steps at both ends of the pool create multiple entry and social zones.

Mack Daddy

The Mack Daddy is a 16′ x 36′ flat-bottom rectangle at 4’8″ depth that packs four distinct pool zones into one shell. It’s the only rectangle design in the Thursday Pools lineup with a built-in integrated spa.

A built-in tanning ledge accommodates two loungers with room to enter and exit the pool.
An integrated spa with a tranquil spillway adds a dedicated relaxation zone.
Wraparound bench seating adds a third area for sitting and soaking.
A uniform 4’8″ flat-bottom depth keeps the swim lane accessible for games, exercise, and active family use.

Magnate

The Magnate shares the 16′ x 36′ flat-bottom shell at 4’8″ depth with the Mack Daddy but trades the spa for a more streamlined layout built around an oversized sun shelf.

A built-in sun shelf accommodates tanning in lounger chairs.
Double-entry wraparound benches and step-in stairs form two conversation areas and two points of entry.
A wide-open swim lane runs the length of the pool for laps, exercise, and active use.

Deep and Feature-Rich Rectangle Fiberglass Pool Shells

These models offer deeper depth profiles, tanning ledges, swim-out benches, courtesy ledges, and beach entries. They suit buyers who want more traditional swimming depth alongside built-in comfort features.

Aspen

The Aspen is one of Thursday Pools’ most popular rectangle designs, available in five sizes ranging from 12′ x 25′ to 16′ x 40′. It pairs a signature 12-inch tanning ledge with a deep-end design and multiple built-in comfort zones.

A 12-inch deep tanning ledge comfortably fits two lounger chairs with room to enter and exit the pool.
Curved steps stretch across the width of the pool for wide, easy entry.
An extended bench near the steps gives swimmers a place to rest and socialize.
Deep-end swim-outs offer a second exit point and a comfortable perch in the deep end.
The wide-open swim lane runs down the center of the pool for laps and active use.

Grace Beach Entry

Grace Beach Entry brings a zero-entry, beach-style entrance to a rectangle shell, giving swimmers, children, and pets a gradual way into the water. The patented design (US 10,472,839) is available in three sizes from 14′ x 36′ to 16′ x 40′.

A gently sloping beach entry makes getting in and out easy for swimmers and pets alike, and fits two lounger chairs in the shallow zone.
A wading area just past the entry works well for young children and doubles as a cool-off zone.
An extended bench runs along the pool for relaxing and socializing.
Dual deep-end swim-outs provide an additional exit point and resting zone.
An open swim area anchors the middle of the pool for laps and active use.

Goliath

The Goliath is available in six sizes from 12′ x 25′ to 16′ x 41′, with depth profiles ranging from 5’4″ to 6’8″. It suits buyers who want a serious deep-end swim experience alongside strong entertaining capacity.

A wide-open swim lane runs down the center of the pool for laps and floating.
Bench seating flanks the entry steps for a comfortable social zone.
Two sets of curved steps in the shallow end and swim-out ledges in the deep end provide multiple entry and exit points.

Monolith

Monolith is Thursday Pools’ deepest rectangle pool model. Its 16′ x 40′ shell reaches 8’6″ at the deep end and includes a flat-bottom shallow end for play. Because diving safety depends on pool dimensions, equipment, installation, and applicable standards, homeowners should consult their dealer, equipment manufacturer, and local requirements before considering any diving or slide use.

The 8’6″ deep end qualifies the Monolith as a Type 1 diving pool under applicable standards.
A large flat-bottomed shallow end leaves room for pool games and active play.
Angled steps make it easy and safe to enter and exit.
A shallow-end bench and dual deep-end benches give swimmers options for resting and socializing at both ends of the pool.

Thursday Pools strongly recommends that diving boards and slides not be installed or used with its pools because of the inherent dangers associated with diving boards and slides in residential pools, including severe injury or death.

Thursday Pools does not manufacture or sell diving boards or slides.

If a homeowner chooses to install or use a diving board or slide despite this warning, the homeowner assumes all related risks and is responsible for confirming that the pool, equipment, installation, and use comply with manufacturer specifications, applicable ANSI/NSPI, ANSI/APSP, ANSI/APSP/ICC standards, and all applicable laws, rules, and regulations.

Find the Fiberglass Pool That Fits Your Yard and Lifestyle

Not sure which rectangle fiberglass pool shell is right for your yard? Use the Pool Selector Tool to compare rectangle fiberglass pool shells by yard size, intended use, and desired features. For site-specific guidance, contact a Thursday Pools dealer near you for a yard evaluation and installation estimate.

Frequently Asked Questions About Rectangle Fiberglass Pool Shells

What is a fiberglass pool shell?

A fiberglass pool shell is a pre-molded, single-piece pool structure manufactured from layers of fiberglass and resin in a controlled factory environment. The finished shell is transported to your property, set into the excavated hole, connected to plumbing, and backfilled. Because it arrives as a complete unit, installation is significantly faster than concrete and avoids the on-site curing and finishing work associated with other pool types.

What rectangle fiberglass pool shells does Thursday Pools offer?

Thursday Pools offers a wide range of rectangle fiberglass pool shell designs, including The Drift, The Nest, The Nook, Sea Turtle, Lil Bob, Lil Bob LX, Big Bob, Spirit, Mack Daddy, Magnate, Aspen, Grace Beach Entry, Goliath, and Monolith.

What is the best rectangle fiberglass pool for lap swimming?

Any rectangle pool with a long, unobstructed swim lane works well for lap swimming, but the right choice depends on how seriously you swim. Spirit (13.5′ x 40′), Big Bob (16′ x 40′), Aspen (up to 16′ x 40′), Goliath (up to 16′ x 41′), and Monolith (16′ x 40′) all give you meaningful length. If you want a deep-water feel for laps, Aspen, Goliath, and Monolith offer deeper profiles. If standing depth and open swim area matter more, Spirit and Big Bob are the flat-bottom options at that length.

What is the best rectangle fiberglass pool shell for families with young children?

Flat-bottom pools at 4’6″ to 4’8″ depth are often a strong choice for active family use because the depth stays consistent from end to end. Depending on swimmer height, they may be easier to use for games, supervision, and shared play than pools with a steep depth transition.

What is the difference between flat-bottom and deep-end rectangle fiberglass pools?

Flat-bottom pools hold a consistent standing depth from end to end, typically 4’6″ to 4’8″. That uniform depth suits water sports, family play, water aerobics, and any activity where swimmers of varying heights need to touch the bottom. Deep-end pools slope from a shallow entry zone to a deeper swim area, usually 5’1″ to 6’8″ depending on the model. Deep-end designs offer more vertical swim space and a more traditional pool feel. Monolith is the deepest rectangle pool shell option, reaching 8’6”.

Can I get a small rectangle fiberglass pool shell?

Yes. Thursday Pools’ smallest rectangle shells include The Drift, The Nest, and The Nook, all measuring 8’4″ x 16′ at 4’8″ flat-bottom depth. Sea Turtle steps up to 9.5′ x 19.5′. Buyers who want a larger compact rectangle shell can also compare the smallest Aspen and Goliath sizes at 12′ x 25′.

What features do rectangle fiberglass pool shells come with?

Depending on the model, Thursday Pools ‘ rectangular fiberglass pool shells may include tanning ledges, integrated spas, wading areas, wraparound bench seating, swim-out benches, courtesy ledges, beach entry zones, and auto-cover readiness.

How long does a fiberglass pool shell last?

Fiberglass pool shells are known for long service life when properly installed and maintained. The gel coat surface is designed to resist algae and mineral buildup, and the single-piece construction avoids liner seams and concrete replastering. With proper water chemistry and routine care, a quality fiberglass pool shell can last for decades. Consult your Thursday Pools dealer and review the warranty for specific coverage details.

What Does the Cheapest Inground Pool Cost?

Posted on March 21, 2022July 2, 2026 by kristin

Quick Answer: What is the Cheapest Inground Pool?

Vinyl liner pools carry the lowest upfront installation cost at $25,000 to $65,000. Fiberglass pools typically run $45,000 to $100,000 or more installed. Gunite pools have the widest price range at $50,000 to $120,000 or more. Upfront cost tells only part of the story, though. Annual maintenance, vinyl liner replacement cycles, and concrete resurfacing requirements affect long-term ownership cost significantly.

Finding the cheapest inground pool type to install is a reasonable starting point, but it doesn’t accurately reflect inground pool cost over 10, 20, or 50 years of ownership.

What Is the Cheapest Inground Pool to Install?

Vinyl liner pools are the least expensive inground option for initial installation. Fiberglass pools typically fall in the middle, while gunite pools carry the widest range and most often land at the high end.

Vinyl Liner Pool Cost: $25,000-$65,000

Vinyl liner pools are generally the most affordable inground pools to build, with an average installed cost of $25,000 to $65,000. That range makes them the entry point for most buyers choosing an inground pool on a tighter budget.

The lower upfront cost comes with a recurring expense built into the pool’s design. Vinyl liners need replacement every 5 to 15 years, and each replacement typically costs $3,000 to $7,500, according to HomeGuide. Custom shapes beyond a standard rectangle add to both the initial liner cost and future replacement costs, because custom liners require specialized manufacturing.

Fiberglass Pool Cost: $45,000-$100,000+

Fiberglass pools typically cost $45,000 to $100,000 or more installed, according to a 2026 survey of independent builders in the Thursday Pools dealer network. A commonly used industry baseline for estimating a fiberglass pool’s starting cost is at least $2,000 per linear foot for the shell and core installation.

For a full cost breakdown by size, design, and region, see the Fiberglass Pool Cost Guide.

The price of a fiberglass pool stays relatively consistent across shapes because the shell comes pre-manufactured. A freeform fiberglass pool and a rectangle of similar length typically cost within the same range. Beach entry designs tend to run 15 to 20 percent more than a standard design of comparable size.

Fiberglass built-in features, including wide steps, wraparound bench seating, tanning ledges, and swim-outs, come molded into the shell at no additional construction cost. In a vinyl liner or gunite pool, those same features are custom-built and add to both the upfront price and ongoing maintenance considerations.

Gunite Pool Cost: $50,000-$120,000+

Gunite pool installation costs range from $50,000 to $120,000 or more, making gunite the most expensive pool type on average. The range is wide because gunite pools are built entirely on-site, and every design decision on shape complexity, size, depth, and features adds labor and material cost. A basic rectangle in a region with high gunite installation volume can land at the lower end. An elaborate custom design in a high-cost market can push well above $120,000.

Sunbelt markets like Texas, Arizona, and Florida see the highest concentration of gunite installations, partly because those climates don’t subject concrete to the same freeze-thaw stress as northern states. Where gunite installation is high-volume, pricing can be more competitive.

What Does Each Inground Pool Type Cost to Maintain Over Time?

Upfront installation is one number. Long-term ownership is a different calculation.

Annual Maintenance Costs

Fiberglass pools typically cost $500 to $1,500 per year to maintain, primarily because the smooth, non-porous gelcoat surface resists algae and requires fewer chemicals than the other pool types. Most fiberglass owners manage the weekly routine of skimming, testing, and basket cleaning in about an hour.

Vinyl liner pools typically cost $1,000 to $2,000 per year in maintenance. The liner surface is more prone to algae and requires more cleaning effort, closer to two to three hours per week on average.

Gunite pools typically cost $2,000 to $4,000 per year to maintain. Concrete is porous, which means algae takes hold more easily and chemical use runs higher. Expect four to eight hours per week of maintenance, plus the recurring cost of acid washing every three to five years.

Long-Term Resurfacing and Replacement Costs

Vinyl liner pools require a new liner every 5 to 15 years. At $3,000 to $7,500 per cycle, per HomeGuide, this is a predictable but recurring cost over the life of the pool.

Gunite pools require resurfacing every 10 to 15 years, typically at $6,000 to $15,000 or more per cycle, per HomeGuide. The porous surface accumulates algae and mineral deposits over time and eventually degrades to the point where a fresh plaster finish is needed.

Fiberglass pools don’t require liner replacements or resurfacing work. The gelcoat surface is non-porous and, with proper chemistry and care, doesn’t degrade the same way that concrete or vinyl does.

Maintenance Comparison

Pool Type	Annual Maintenance	Estimated 10- to 15-Year Maintenance Cost
Fiberglass	$500-$1,500 per year	$3,000-$5,000
Vinyl liner	$1,000-$2,000 per year	$6,000-$10,000+ (plus liner replacement)
Gunite (concrete)	$2,000-$4,000 per year	$20,000+ (plus resurfacing)

What Factors Make Any Inground Pool More or Less Expensive?

Several variables affect the final project total regardless of pool type.

Pool Size

Smaller pools cost less to install and less to maintain. A compact pool requires less excavation, less water, less chemical maintenance, and less surrounding decking than a large pool. For buyers prioritizing affordability, small pool designs are the starting point.

Pool Shape

For vinyl liner and gunite pools, shape directly affects cost. Simple rectangles cost less because they require less custom labor at installation and, for vinyl, less custom liner fabrication. For fiberglass pools, shape doesn’t significantly affect the price because shells are manufactured at a set cost regardless of contour.

Site Conditions

Rocky soil, clay-heavy ground, steep slopes, and limited yard access all add to installation costs. Excavation in difficult soil conditions can cost significantly more than standard work. Limited access may require crane service to place the pool shell, adding several thousand dollars.

Features and Add-Ons

Heaters, automatic covers, bubblers, deck jets, LED lighting, slides, and water features all add to the project total. Safety fencing, required in most jurisdictions, is frequently excluded from base quotes. According to the 2026 survey of independent Thursday Pools dealers, homeowners can expect to pay an average of $8,115 for a 300-linear-feet fence, depending on material and linear footage.

Region

Labor rates, permit costs, and material supply all vary by location. The same pool project can cost meaningfully more in a high-cost coastal market than in a Midwest suburb, independent of the pool type.

Find the Most Affordable Pool for Your Backyard

The cheapest pool for your backyard depends on your priorities. If the lowest upfront cost matters most, vinyl liner pools are often the easiest and most affordable path to pool ownership. If the lowest total cost over a decade matters more, fiberglass pools typically come out ahead once factoring in maintenance and replacement cycles.

A local Thursday Pools independent dealer can assess your yard, review your budget, and walk you through which designs and pool types fit your goals. The Pool Cost Calculator and Pool Cost Checklist are also good starting points before your first dealer conversation.

Frequently Asked Questions About Cheapest Inground Pool Costs

What is the cheapest type of inground pool?

Vinyl liner pools carry the lowest upfront installation cost at $25,000 to $65,000. Fiberglass pools typically run $45,000 to $100,000 or more installed. Gunite pools range from $50,000 to $120,000 or more. Over time, fiberglass pools typically cost the least to own because they don’t require liner replacement or resurfacing like other pool types.

What is the cheapest inground pool to maintain?

Fiberglass pools are the least expensive inground pool type to maintain. Annual maintenance typically runs $500 to $1,500 per year, compared to $1,000 to $2,000 for vinyl liner pools and $2,000 to $4,000 for gunite pools. Fiberglass pools also avoid the liner replacement costs ($3,000-$7,500 every 5-15 years) that vinyl owners face and the resurfacing costs ($6,000-$15,000 every 10-15 years) that gunite owners face.

How can I reduce the cost of an inground pool?

Choosing a smaller pool is the most direct way to reduce cost. Simpler shapes reduce construction costs in vinyl liner and gunite pools. Avoiding expensive add-ons, such as auto covers, water features, and heaters, at installation keeps the base project lower. For fiberglass buyers, built-in features like steps and benches come at no extra cost, so the savings on those elements are already built in. Comparing fully itemized quotes from multiple dealers is essential, since base estimates can exclude permits, electrical, fencing, and dirt hauling.

Is fiberglass or vinyl liner cheaper?

Vinyl liner pools cost less to install upfront. Fiberglass pools typically cost less over 10 to 15 years of ownership because they don’t require liner replacement. At $3,000 to $7,500 per liner replacement every 5 to 15 years, the cumulative cost narrows the gap between vinyl and fiberglass relatively quickly.

What is not included in a cheap inground pool quote?

Many base inground pool quotes exclude permits, electrical work, safety fencing, water fill, dirt hauling, decking, pool covers, and yard restoration. These line items can add $10,000 to $30,000 or more to the total project cost, depending on location and scope. Always request an itemized quote and ask specifically about each of those items before comparing estimates from different contractors.

Does a cheap inground pool add value to your home?

Inground pools generally add value in markets where outdoor recreation is a priority, particularly in warmer climates. A pool in good condition tends to be viewed more favorably by buyers than one with visible deferred maintenance. A fiberglass pool with no resurfacing needs and low ongoing maintenance presents as a lower-cost ownership experience to potential buyers compared to a gunite pool due for resurfacing.

What is the cheapest inground pool for a small yard?

For small yards, compact fiberglass designs such as plunge pools and small rectangle models starting around 12′ x 25′ provide the smallest footprint at predictable cost. Vinyl liner pools in a small rectangle shape are the least expensive starting point on price alone. Both types can work in limited spaces, though fiberglass offers the advantage of built-in features and lower long-term maintenance.