How Much Does a Fiberglass Pool Cost in Wisconsin?

Several factors influence fiberglass pool cost in Wisconsin beyond just the size and shape of the pool. The Badger State’s unique mix of climate, soil, and local building regulations can impact construction and installation needs, timelines, and budgets. From sandy lakeshore soils of Sheboygan to clay-heavy terrain around Wausau, excavation and site prep vary across regions. In cities like Madison, zoning rules often require specific setbacks and fencing requirements, while tighter urban lots in Milwaukee may limit equipment access for delivery and installation.

Wisconsin’s shorter summer swim season inspires many homeowners to budget for features that stretch their enjoyment, like pool heaters, automatic safety covers, or an accompanying spa. Whether planning a peaceful retreat in Eau Claire or a backyard hub for entertaining in Green Bay, a local Thursday Pools dealer can help you factor in your property’s layout, soil type, and municipality rules to design a pool and backyard space in line with your vision and budget.

What’s the Average Cost of a Fiberglass Pool Installation in Wisconsin? Survey Says…

To help Wisconsin homeowners make smarter and more informed pool planning decisions, Thursday Pools conducted a 2025 survey of our independent dealers across the state. From Madison suburbs to Green Bay lakefronts and backyard retreats in La Crosse, this data reflects what Wisconsin families are investing in fiberglass pool installations.

AVERAGE WISCONSIN FIBERGLASS POOL INSTALLATION BY SIZE
Pool Type	Small Fiberglass Pools	Medium Fiberglass Pools	Large Fiberglass Pools
Size Range	Up to 26 ft Long or 400 ft²	26 to 34 ft Long or 400 to 600 ft²	35 ft and Longer or 600+ ft²
Average Cost	$95,000	$110,000	$125,000

As you consider your project, these averages offer a useful reference point, but every backyard presents challenges. Soil type, yard slope, local permitting, and delivery logistics can all affect your final cost, especially when combined with custom design choices or optional features. Connect with a trusted local Thursday Pools dealer for the most accurate estimate. They’ll assess your site and vision to help shape the right pool plan for your space, budget, and Wisconsin lifestyle.

Average Cost of Popular Pool Models Installed in Wisconsin

GOLIATH (12’ x 25’)

The Goliath’s smallest footprint brings smart, stylish design to tighter backyard spaces across Wisconsin, from walkable neighborhoods in Madison to weekend cabins near Lake Geneva. It features roomy entry steps, built-in bench seating, and a clean swim lane for light workouts or family lounging. Whether you’re sipping coffee at sunrise or cooling off after a long hike, the Goliath delivers comfort and versatility in a compact layout.

According to our 2025 survey of Thursday Pools dealers in Wisconsin, the average cost for a standard installation of the Goliath or another small fiberglass pool design under 26 feet long and 400 square feet is $95,000.

CATHEDRAL (14’ x 33’)

The Cathedral makes a graceful statement in mid-size backyards from Brookfield to Appleton. This medium-sized pool features sweeping entry steps, wraparound bench seating, and a central swim lane inviting relaxation and movement. Its balanced layout adapts beautifully to Wisconsin’s suburban yards, pairing well with pergolas, patios, or a quiet corner garden. Whether hosting friends or enjoying a peaceful soak, the Cathedral offers comfort, style, and space to connect.

Our 2025 Wisconsin dealer survey shows the average cost for a standard installation of the Cathedral or other medium fiberglass pools between 26 and 34 feet long or 400 to 600 square feet is $110,000.

Mack Daddy Pool Model Image

MACK DADDY (16’ x 36’)

Big dreams deserve a bold design—and the Mack Daddy delivers. Ideal for spacious or countryside lots across Waukesha or Eau Claire, this large fiberglass pool offers something for everyone. A fully integrated spa with a spillover feature, an oversized tanning ledge, wraparound benches, and a flat-bottom swim lane combine to create a centerpiece for entertaining, relaxing, and playing all season long. Whether you’re planning cookouts, hosting family reunions, or simply floating under the stars, the Mack Daddy transforms your backyard into a true destination.

Our 2025 Wisconsin dealer survey shows the average cost for a standard installation of the Mack Daddy or other large fiberglass pool models over 35 feet long and 600 square feet is $125,000.

Wisconsin’s Landscape: How Soil and Slope Shape Your Pool Project

Wisconsin’s diverse terrain—from sandy soils of central regions to clay-heavy soil near Lake Michigan—impacts every fiberglass pool installation. Loose soils may necessitate reinforced backfilling in areas like the Central Sands to ensure long-term stability. Regions with clay-heavy soils, such as parts of southeastern Wisconsin, often require enhanced drainage solutions to prevent soil expansion and contraction that could damage a pool shell.

Topography adds another layer of complexity. Sloped yards might need grading or retaining walls to create a level base for the pool and surrounding patio. Urban and suburban properties with limited access, such as in Milwaukee’s older neighborhoods, may require a crane or specialized equipment to maneuver the pool shell into place.

AVERAGE ADDITIONAL YARD-RELATED EXPENSES IN WISCONSIN
Excavating Sandy Soil	$3,800
Excavating Clay Soil	$1,600
Excavating Rocky Soil	$5,525
Above-Average Slope Requiring Extra Grading	$4,450
Limited Yard Access	$4,375

Connect with a local Thursday Pools dealer to navigate these challenges. They’ll assess your property’s unique soil type, slope, and accessibility characteristics to tailor a plan for your design.

Budget for Permits and Fencing Requirements Before Breaking Ground

While Wisconsin doesn’t have a uniform statewide residential pool fencing code, many local jurisdictions adopt standards similar to the International Swimming Pool and Spa Code (ISPSC), which typically requires a minimum 4-foot-high barrier around pools.

The City of Madison is among those mandating 4-foot fences around in-ground pools, plus a self-closing, self-latching gate. Other municipalities may have more stringent or additional regulations and permit requirements. Brookfield, for example, requires a 5-foot-high fence and approval by the city’s chief building inspector. Sun Prairie and Germantown add that fences must be 3 feet or further from the pool walls.

Given these variations, consulting with your local municipality or a knowledgeable Thursday Pools dealer is crucial to ensure compliance with all applicable regulations. Proper planning will help avoid unexpected costs and provide a smooth installation process.

According to our 2025 survey of Wisconsin dealers, the average cost for a 300-linear-foot pool fence is approximately $11,075.

Paying for Popular Pool Upgrades You’ll Love

A fiberglass pool provides a solid foundation for backyard enjoyment, but thoughtful enhancements can elevate comfort, simplify maintenance, and extend usability throughout Wisconsin’s varied seasons. Based on our 2025 survey of independent Thursday Pools dealers across the state, here are the most sought-after features and their average costs:

Comfort, Control, and Clean Water

Pool Heater Average Cost in Wisconsin: $6,850

Extend your swimming season into Wisconsin’s cooler months with a reliable pool heater that maintains comfortable water temperatures.

UV Filtration System Average Cost in Wisconsin: $4,525

Maintain clear, healthy water with a UV filtration system that reduces chemical usage by targeting harmful bacteria and algae.

Pool Automation and Smart Control System Average Cost in Wisconsin: $7,925

Manage lighting, temperature, and filtration remotely via your smartphone or tablet for added convenience.

Automatic Pool Cleaning System Average Cost in Wisconsin: $3,400

Simplify maintenance with an automatic cleaning system that keeps your pool pristine with minimal effort.

Safety and Protection

Automatic Pool Cover Average Cost in Wisconsin: $13,725

Enhance safety, reduce evaporation, and keep debris out with a cover that operates at the push of a button.

Manual Safety Pool Cover Average Cost in Wisconsin: $5,925

Provide a cost-effective safety solution that also helps maintain water cleanliness.

Recreation and Relaxation

Integrated Spa Average Cost in Wisconsin: $11,675

Add a spa feature to your pool for therapeutic relaxation and enjoyment.

Simple Pool Slide Average Cost in Wisconsin: $7,325

Introduce fun for all ages with a straightforward slide design.

Deluxe Pool Slide Average Cost in Wisconsin: $9,250

Opt for a more elaborate slide to enhance your pool area’s excitement and aesthetic appeal.

Diving Board (Type 1 Diving Pools Only) Average Cost in Wisconsin: $5,975

Install a diving board only if your pool meets the specific depth and slope requirements for Type 1 diving pools.

*Thursday Pools strongly advises against including diving boards and slides due to safety concerns. A licensed professional must review any such additions to ensure compliance with local building codes, safety regulations, and manufacturer guidelines. Not all fiberglass pool models are suitable for diving or slide use. Homeowners and installers are responsible for proper installation and usage. Always prioritize safety and consult a qualified expert before adding diving or sliding features to your pool.

Patios, Landscaping, and Surroundings

Poured Concrete Patio (Approx. 1,200 sq. ft.) Average Cost in Wisconsin: $11,500

Choose a durable and low-maintenance option that withstands Wisconsin’s seasonal changes.

Paver Patio (Approx. 1,200 sq. ft.) Average Cost in Wisconsin: $10,775

Opt for pavers to add texture and design versatility to your poolside area.

Surrounding Landscaping Average Cost in Wisconsin: $4,900

Enhance your pool environment with thoughtfully selected plants and features complementing your outdoor space.

Water Features and Lighting Accents

Specialty Waterline Tile Average Cost in Wisconsin: $7,525

Enhance your pool’s visual appeal with decorative tiles that add a personalized touch.

LED Pool Lighting Average Cost in Wisconsin: $2,680 per light

Illuminate your pool with energy-efficient LED lights in various colors to set the desired mood.

Deck Jets Average Cost in Wisconsin: $3,675 per jet

Add dynamic water features that create graceful arcs, creating a tranquil atmosphere.

Bubblers Average Cost in Wisconsin: $3,400 per bubbler

Introduce gentle water movement and sound, perfect for shallow areas or tanning ledges.

Cascading Waterfalls Average Cost in Wisconsin: $3,850

Create a resort-like ambiance with waterfalls offering visual beauty and soothing sounds.

Create a Pool Experience as Uniquely Wisconsin as You Are

Whether you’re planning weekend swims in Waukesha, lakeside lounging in Door County, or family fun in your suburban Madison backyard, a fiberglass pool can bring immediate enjoyment and long-term value to your Wisconsin home. With the right design and installation plan, you’ll create a space that reflects your lifestyle and fits your budget.

Start smart with the Thursday Pools Pool Cost Calculator to explore budget ranges based on real-world Wisconsin input. Then, dive into the Pool Selector Tool to match your needs with pool shapes, sizes, and features that fit your vision. When you’re ready for local insight, connect with an independent Thursday Pools dealer in your area. They’ll help you evaluate your yard, plan for site-specific considerations, and bring your backyard retreat to life.