How much does an indoor pool cost?
How much does an indoor pool cost?
$25,000 – $120,000 average installed cost (pool alone)
$30,000 – $173,500 average installed cost (pool + enclosure + dehumidifier)
Average indoor pool cost
Building an indoor pool costs $25,000 to $120,000 on average for the pool itself, depending on the size and material. The total cost of an indoor pool, dehumidification system, and enclosure costs $30,000 to $173,500. Installing a small above-ground pool in your home costs less than a large indoor lap pool.
| National Average Cost | $72,500 |
| Minimum Cost | $10,000 |
| Maximum Cost | $450,000 |
| Average Range | $25,000 to $120,000 |
An indoor pool is a great way for homeowners in colder climates to use a pool all year round without having to winterize it every year.
You can install an indoor pool in a basement, sunroom, screened porch, or other structure.
Indoor pools cost less to maintain since debris doesn't fall into the pool, but they cost more to build and use more energy than outdoor pools.
Cost of an indoor pool by size
The cost of an indoor pool depends mostly on its size and whether your pool is prefabricated or custom-built. Custom designs may include unique shapes, depths, and accessories. Prefab pools cost $80 to $200 per square foot installed, while custom pools cost $100 to $300 per square foot.
| Pool size (square feet) | Average installed cost (prefab)* | Average installed cost (custom)* |
|---|---|---|
| 100 | $8,000 – $20,000 | $10,000 – $30,000 |
| 200 | $16,000 – $40,000 | $20,000 – $60,000 |
| 300 | $24,000 – $60,000 | $30,000 – $90,000 |
| 400 | $32,000 – $80,000 | $40,000 – $120,000 |
| 500 | $40,000 – $100,000 | $50,000 – $150,000 |
| 600 | $48,000 – $120,000 | $60,000 – $180,000 |
| 700 | $56,000 – $140,000 | $70,000 – $210,000 |
| 800 | $64,000 – $160,000 | $80,000 – $240,000 |
| 900 | $72,000 – $180,000 | $90,000 – $270,000 |
| 1,000 | $80,000 – $200,000 | $100,000 – $300,000 |
*Not including enclosures or dehumidifiers.
Cost to build an indoor pool by material
The most common indoor pool materials are vinyl, fiberglass, and concrete. Most custom pools use vinyl or concrete, while fiberglass is typically prefabricated.
| Material | Average installed cost* | Details |
|---|---|---|
| Vinyl liner pool cost | $25,000 – $65,000 | Liner needs regular replacements |
| Fiberglass pool cost | $30,000 – $85,000 | Low maintenance and long lifespan |
| Concrete pool cost | $50,000 – $120,000 | Most expensive but durable |
*Not including enclosures or dehumidifiers.
Indoor pool cost calculator
The cost to build an indoor pool depends on the material, labor rates, and other factors:
| Factor | Average installed cost |
|---|---|
| Pool installation | $25,000 – $120,000 |
| Dehumidifier | $1,000 – $3,500 |
| Pool enclosure | $4,000 – $50,000 |
| Total cost | $30,000 – $173,500 |
Other factors that affect the cost of building an indoor pool include:
Accessibility: The construction team may use large equipment, especially for excavation. Labor costs may go up if your doorways are narrow or the space is hard to maneuver.
Pool type: Installing a pool with a smaller footprint, like a swim spa, plunge pool, or cocktail pool, costs less than installing a lap pool that requires more materials, installation labor, and space.
Dehumidification system: Installing a dehumidification system costs $1,500 to $3,500 for a whole-house system or $1,000 to $2,800 for a basement or isolated area. This can help prevent mold and mildew growth.
Enclosure: Building a pool enclosure costs $4,000 to $14,000 total if you don’t have a suitable place to build a pool already. If you have an existing structure to house the pool, you’ll spend less. High-end materials like glass or polycarbonate cost $10,000 to $50,000.
Water: The cost to fill a pool with water is $4 to $10 per 1,000 gallons if you use your own garden hose or $30 to $100 per 1,000 gallons for a delivery service.
Maintenance: Normally, pool maintenance costs $80 to $150 monthly. However, indoor pools typically require less maintenance and cleaning because less leaves and debris gets into the pool. Since the pool is indoors, you don’t have to pay to winterize or drain it, either.
Permit: Pool building permits cost $100 to $300. Contractors usually include the permit costs in their estimate.
Installing a pool during the fall or winter often costs less than building it during the pool industry's busy season.
Labor
The labor to install an indoor pool includes several different projects during construction:
Excavation costs $1,500 to $5,000 for pools, sometimes more if you have to dig through a foundation.
Plumbers charge $75 to $150 per hour to run plumbing lines.
Electricians cost $50 to $130 per hour to install electrical wiring.
A vapor barrier costs $0.50 to $0.75 per square foot installed and protects your home from mold, water damage, rust, and pests. Some installers include this in their estimate, and some charge extra for it.
Additional costs
Adding extra features to your indoor pool will increase the price. An indoor heated pool costs more than average but will be more comfortable in the winter months. Keeping your pool covered when not in use will reduce evaporation and keep energy bills down.
| Feature | Average total cost |
|---|---|
| Pool lighting cost | $500 – $1,700 |
| Pool heater cost | $1,600 – $5,200 |
| Pool cover cost | $1,000 – $20,000 |
| Waterfall cost | $2,000 – $8,800 |
| Pool deck cost | $5,000 – $20,000 |
| Pool fence cost | $2,000 – $13,500 |
A solar pool heater costs $2,500 to $6,500 installed, which increases your upfront costs but reduces your ongoing pool-heating costs to $10 to $25 per month on average, vs. $50 to $500 per month when using other heating methods.
Pool shape
Many indoor pools are rectangular because that shape is easy to build, but there are several different shapes available:
| Indoor pool shape | Installed cost* (prefab) | Installed cost* (custom) |
|---|---|---|
| Kidney | $25,000 – $35,000 | $30,000 – $65,000 |
| Rectangular | $25,000 – $60,000 | $60,000 – $70,000 |
| Classic | $30,000 – $45,000 | $29,000 – $90,000 |
| Lagoon | $35,000 – $85,000 | $70,000 – $120,000 |
*Not including enclosures or dehumidifiers.
Kidney-shaped:Â Kidney-shaped indoor pools cost $25,000 to $65,000, depending on the size, and are a good fit for homeowners looking for a visually appealing shape.
Rectangular:Â A standard rectangular pool costs $25,000 to $70,000 on average. This shape is easier to build an enclosure around than more complex shapes.
Classic:Â A classic-shaped pool is a rectangle with accent curves. This pool shape typically costs $30,000 to $90,000 with installation.
Lagoon:Â An indoor lagoon-shaped pool costs $35,000 to $120,000 and looks more like a natural body of water than other shapes. Lagoon pools often have customizations like rock formations or waterfalls.
How to save money on an indoor pool
Indoor pools are an expensive project, but there are several ways you can save money during the installation and afterward:
Choose a smaller pool size or model.
Skip pricey add-ons like waterfalls, slides, heaters, or color-changing lights.
Choose a fiberglass pool over vinyl. Fiberglass is more expensive up front, but it’s more low maintenance.
Install a manual cover instead of an automatic one.
Do your own pool maintenance instead of hiring someone to do it for you.
Indoor pool FAQs
Does an indoor pool raise a home’s value?
An indoor pool can increase a home’s valueby 5% to 7% on average, but the return on investment (ROI) varies. Potential buyers and appraisers take into account the pool’s age, condition, and material when deciding.
Can you build an indoor pool in your basement?
Yes, you can build an indoor pool in a basement. Concrete floors are ideal for adding an above-ground pool, but it will cost more to excavate a solid foundation rather than the dirt in your yard. Ask a basement remodeling contractor if your space is right for this project.
How long does it take to build an indoor pool?
The timeline for building an indoor pool depends on the material and size. Installing an inground vinyl liner pool takes 2 to 3 weeks, while building a concrete inground pool usually takes 6 to 8 weeks.
Can you swim in an indoor pool during a thunderstorm?
As frightening as it may feel, you can swim in an indoor pool during a storm. Some indoor pools close during storms, but no one has ever been struck by lightning in an indoor pool. They’re just as safe as being inside any other properly designed building.
What type of swimming pool is best indoors?
The best type of swimming pool for you will ultimately depend on your budget and personal preferences. Many homeowners choose fiberglass shells because they’re easy to install, mid-range in price, and low-maintenance.
Do indoor pools need to be heated?
You don’t have to add a heater to an indoor pool, but it does make swimming more enjoyable. If you live in a warm climate and have a transparent pool enclosure, your pool will probably be comfortably warm without a heater.
Getting estimates from indoor pool installers
Follow these guidelines when looking for indoor pool installers near you:
Get at least 3+ estimates from experienced companies to compare. If you already know what type of indoor pool you want, reach out to pool installers who specialize in that type:
Select installers who are members of the Association of Pool & Spa Professionals (APSP).
Look through installer reviews on HomeGuide and Google.
Beware of the lowest prices, which sometimes suggest poor-quality work.
Get a contract and warranty in writing before any work begins.
Don't pay in full until the project is done, to pool and enclosure pass all inspections, and you’re satisfied with the work.
Questions to ask indoor pool contractors
Ask pool builders these questions to choose the best contractor for you:
How long have you been installing indoor pools?
Do you provide free estimates for prospective customers?
Do you have a business license and liability insurance?
Do you have any pictures of previous indoor pool installations I can see?
Are you an Association of Pool & Spa Professionals (APSP) member?
Will you use subcontractors for this job?
When can you start, and how long will this take?
Will you give me a written copy of our agreement?
What warranties or guarantees do you offer for your work?
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