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A custom backyard pool can cost far more or less than a national average suggests because design, site conditions, location, equipment, and surrounding work all affect the installed price. For U.S. planning, Angi reports a 2026 average build cost of $41,843, while a Michigan assessor schedule lists $35,900–$42,300 for a specific 450-square-foot gunite pool under stated assumptions. Angi estimates annual maintenance at $960–$1,800. Treat these as reference points—not a quote or a guaranteed ceiling—and compare local bids with the same detailed scope.
At a glance: What do the published figures cover?
| Reference | Figure | Scope and limitation |
|---|---|---|
| Angi, 2026 | $41,843 average build cost | Average based on 1,467 verified Angi Pro projects; not a price for every custom design or location. |
| Michigan Assessors’ Manual, 2025 | $35,900–$42,300 | 450-square-foot gunite pool; cost varies by perimeter and assumes specified construction and site conditions. |
| Angi, 2026 | $960–$1,800 per year | Maintenance estimate that includes chemical balancing, minor repairs, and an ongoing increase in utility bills; not a cap on ownership costs. |
Reference figures checked November 2026. The Angi project average and the Michigan assessor schedule measure different things, so they should not be treated as equivalent bids.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesThe Michigan schedule is unusually useful because it spells out what its base estimate assumes: gunite construction in a frost-free area with normal soil, a filter, concrete coping, one light, steps, a ladder, and a maximum depth of nine feet. A real project may differ in all of those respects. The schedule is an assessment reference, not a contractor’s proposal for your property. Michigan’s 2025 Assessors’ Manual provides the pool assumptions and estimating rules.
How much does it cost to build a custom backyard pool?
There is no single reliable national price for a custom pool. The available U.S. figures are broad planning references: one is a marketplace average across reported projects, and the other is a schedule for a defined pool in Michigan. Neither accounts for every choice, local labor and material price, property constraint, or project inclusion.
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Angi’s 2026 average of $41,843 is based on 1,467 verified Angi Pro projects. It can help a homeowner orient an early budget, but an average does not tell you whether a particular project includes decking, heating, a cover, landscaping, permits, or difficult excavation. Nor does it guarantee a similar price in a particular city or for a custom shape. Angi’s 2026 pool-cost guide is the source of that project average and its maintenance estimate.
The Michigan manual’s $35,900–$42,300 range applies to a 450-square-foot gunite pool, with the cost varying by perimeter. Its assumptions are deliberately specific. A different region, pool type, soil condition, access route, depth, or finish can make the reference a poor match. Do not add the Angi average and Michigan schedule together, average them, or treat either as a quote.
What makes a custom pool estimate go up?
Design and surrounding work can substantially change the base cost. In the Michigan manual, custom free-form gunite pools may run 50% to 100% more than its base costs, and typical decking adds 20% to 50% to the basic pool cost. Those are estimating rules in that manual—not universal contractor markups or a prediction for your property.
The important budgeting question is what the bid includes, not just the headline price. A base pool figure may omit work needed to deliver the backyard you have in mind. Ask each bidder to show, as separate line items where practical, whether the price covers:
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- Pool shell and finish: material, shape, depth, and interior finish. A custom free-form design may not fit a basic-pool allowance.
- Excavation and site work: excavation, soil work, and any added effort due to access constraints. Ask how the bid handles conditions that cannot be confirmed before digging.
- Coping and decking: identify the coping material and the size, material, and finish of the surrounding deck. The Michigan schedule’s decking allowance is a reminder that this can be a major add-on.
- Circulation and filtration: list the included pump and filter equipment rather than relying on a general phrase such as “pool equipment.”
- Lighting and extras: state the number of lights and whether a heater, cover, steps, ladder, or other features are included.
- Yard restoration and landscaping: clarify whether planting, grading, and restoration of disturbed areas are part of the contract.
- Permits and safety provisions: establish who identifies and obtains permits and what barrier or other safety work is included. Requirements vary by jurisdiction.
For a location-specific comparison, California homeowners can consult the California State Board of Equalization’s January 2026 Assessors’ Handbook Section 531, which includes pool and yard-improvement costs. It is a separate regional assessor reference, not an adjustment factor to apply to Michigan’s schedule. The California handbook also notes shipping as a key cost for fiberglass pools; that observation does not establish a universal fiberglass premium.
How should you compare pool-builder bids?
Compare the same defined project across bids. If one proposal includes the deck and heater while another covers only the pool shell and basic circulation equipment, the lower total is not necessarily the less expensive way to complete the project.
- Write down the design you want. Specify the approximate size, shape, depth, finish, and features. If the design is not final, ask bidders to identify their assumptions rather than silently pricing different versions.
- Give each builder the same site information. Describe access limitations and known site conditions. Ask what excavation and soil work are included and how unforeseen conditions would be priced.
- Request itemized scope and exclusions. Get clear line items for shell, excavation, equipment, coping, decking, heating, cover, landscaping, permits, and safety barrier work. A written exclusion is more useful than an unclear promise that something is “standard.”
- Check allowances and substitutions. If a proposal uses an allowance for a finish, deck, or equipment, ask what product or amount the allowance represents and how a selection above or below it changes the price.
- Compare the total to a complete backyard project. Add the items you will need but that are excluded from a pool-only price. Keep a separate list of uncertainties rather than assuming they are covered.
- Confirm local requirements before finalizing the design. Ask the local building department about applicable permits, electrical and barrier requirements. Check with your insurer about any property or coverage conditions; rules and policy terms are not established nationally by the cost references here.
Use the national average to frame an early conversation, not to challenge a detailed local quote by itself. When prices differ, first look for differences in scope, assumptions, and exclusions; then ask the builders to explain the remaining gap.
How much does pool maintenance cost per year?
Angi estimates annual pool maintenance at $960–$1,800. Its estimate includes chemical balancing, minor repairs, and the ongoing increase in utility bills. It is a planning range, not a maximum: service arrangements, climate, season length, heating, local utility rates, and irregular repairs can change the total.
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Make the annual budget more useful by tracking distinct cost categories rather than treating “maintenance” as one predictable bill:
- Routine service and chemicals: include professional service if you plan to hire it, along with water balancing and chemical supplies. Check the water before making chemical adjustments.
- Electricity for circulation: pumps run to circulate water through filters and can be a significant energy user. The U.S. Department of Energy’s residential pump guide says pool pumps can use 3,000 to more than 5,000 kWh per year. This is a broad use range, not a prediction for a particular pump or household.
- Heating: budget separately where a heater is planned or used. Heating costs depend on the pool and how it is operated, so the pump-energy figure does not cover them.
- Water and seasonal work: include water use and any opening or closing service that applies to your situation.
- Repairs and replacement work: keep irregular repairs separate from routine service. The cited annual range does not promise to cover every repair or future replacement.
To estimate your own pump electricity cost, start with the installed pump’s wattage and expected runtime to estimate kWh, then multiply by your local electricity rate. The result is an estimate for the pump component only; account separately for pool heating and other household energy use. The Department of Energy guide, Measure Guideline: Replacing Single-Speed Pool Pumps with Variable Speed Pumps for Energy Savings, discusses pool-pump energy use. The 3,000-to-more-than-5,000-kWh range should not be read as a household’s guaranteed bill or as a quantified saving from any particular equipment choice.
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Can a pool cover reduce heating costs?
Potentially. The U.S. Department of Energy’s Better Buildings Alliance identifies evaporation as the largest source of pool energy loss. It says covers can reduce evaporation and water loss and may save 50%–70% of pool heating costs. That is a potential reduction in the heating component—not a guaranteed cut to the full pool bill.
Actual savings depend on the pool, climate, cover, and use. A cover does not eliminate pump electricity, routine service, chemicals, or every other ownership cost. For an energy-conscious budget, treat a cover as one way to address heat and water loss, then compare its cost and expected use with the rest of the project scope. The DOE’s Pool Efficiency fact sheet explains why evaporation matters and gives the conditional heating-savings range.
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What should you budget before asking for a quote?
Start with two separate totals: the installed project and the recurring annual cost. That keeps construction choices from obscuring the cost of running the pool, and it avoids treating an annual maintenance estimate as though it includes every utility, seasonal, or repair expense.
For the installed project, list the pool design and features you want, then mark each item as included, excluded, or not yet priced: excavation and soil work; shell and finish; filtration and circulation; lights; heater; cover; coping and decking; landscaping; permits; and safety barrier work. Ask bidders to identify assumptions and allowances, particularly where the site is uncertain.
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For annual ownership, make a separate estimate for service and chemicals, pump electricity, heating, water, opening or closing, and irregular repairs. Use Angi’s $960–$1,800 annual maintenance range only as a broad reference because its scope includes some utilities and minor repairs but may not match the way you track household costs. A useful comparison is one that exposes both what each bid covers now and what the owner may pay later.
Before signing, confirm local permit, electrical, and barrier requirements with the relevant building department and check with your insurer. These requirements depend on the property’s jurisdiction and policy; the national and regional cost references cannot determine what applies to an individual address.
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Frequently Asked Questions
Is the $41,843 pool cost a quote I can expect from a builder?
No. It is Angi’s 2026 average based on 1,467 verified Angi Pro projects, not a binding price or a location-specific estimate. A builder must price the design, site, equipment, and included work for your property.
Does the Michigan pool estimate apply to other states?
It is a Michigan assessor schedule for a defined 450-square-foot gunite pool, with normal soil and frost-free-area assumptions. It is useful for understanding how scope and assumptions affect a reference cost, but it is not a national contractor rate.
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The U.S. Department of Energy residential pump guide gives a broad range of 3,000 to more than 5,000 kWh per year. Your pump’s wattage and runtime are needed to make a household-specific estimate.
Do pool-cover savings include electricity for the pump?
The DOE Better Buildings figure of 50%–70% applies to pool heating costs, and the fact sheet describes reduced evaporation and water loss. It is not a claim that a cover cuts the entire pool-related energy bill by that amount.
