A small kidney-shaped pool typically costs $35,000-$75,000 to install in the U.S., with an average near $52,000 for a basic inground project. The small kidney shaped pool cost depends most on construction material, excavation access, site conditions, and whether decking, a heater, fencing, or other features are included.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed pool | $35,000 | $52,000 | $75,000 | Small inground pool, basic equipment |
| Pool shell or construction | $20,000 | $36,000 | $55,000 | Varies by vinyl, fiberglass, or concrete |
| Decking | $3,000 | $7,000 | $14,000 | Approximately 300-500 sq ft |
| Annual upkeep | $1,200 | $2,000 | $3,500 | Cleaning, chemicals, and routine service |
What a small kidney-shaped pool costs to install
Most homeowners should budget $35,000-$75,000 for a complete, modest inground pool project. That range assumes a pool roughly 10 by 20 feet, standard filtration, ordinary soil, and typical suburban access. A simple vinyl-liner pool may start around $30,000-$45,000; fiberglass options often run $40,000-$65,000, while custom concrete work can reach $55,000-$90,000 or more.
Kidney curves can require a custom layout or a less common shell size, so a small footprint does not always mean a proportionally low price. In some markets, excavation, permits, electrical work, and required barriers create a substantial minimum project charge. Prices above exclude major landscaping and unusual drainage or retaining-wall work.
Assumptions: U.S. pricing for a 10-by-20-foot inground pool, standard equipment, normal access, and no major rock excavation.
How excavation, shell, and equipment shape the quote
Construction and installation labor usually make up the largest portion of the estimate. These ranges are illustrative quote components for a basic project; contractors may combine them into package pricing.
| Cost component | Low | Average | High |
|---|---|---|---|
| Excavation and grading | $3,000 | $6,000 | $12,000 |
| Pool shell or structure | $15,000 | $28,000 | $45,000 |
| Installation labor and plumbing | $7,000 | $12,000 | $20,000 |
| Pump, filter, and basic electrical | $3,000 | $5,000 | $9,000 |
| Permits, delivery, and disposal | $1,000 | $3,000 | $7,000 |
| Basic coping and deck | $3,000 | $7,000 | $14,000 |
Costs depend on what the builder includes: confirm whether startup chemicals, temporary fencing, backfill, hauling, and final grading are covered. For planning, crew labor may represent 80-160 hours at roughly $50-$100 per worker-hour, though labor is usually quoted as a project amount.
Pool size, shell material, and access change the price
Every extra foot of length or difficult excavation can move the quote by thousands of dollars. A 10-by-20-foot pool generally costs less than a 12-by-24-foot design because it needs less excavation, shell material, plumbing, and decking. Moving from a 4-5-foot average depth to a deeper 6-8-foot end may also require more excavation and structural work.
Material affects both the initial estimate and design choices. Vinyl liners often offer the lowest entry cost, but liner replacement is a future expense. Fiberglass installation depends on available kidney-shaped molds and truck or crane access. Concrete permits the most customized curves, but typically costs more and takes longer to build. Rock, groundwater, narrow gates under 8 feet, or a steep slope can add several thousand dollars or more.
Three small kidney pool quotes by project scope
Comparing complete scopes is more useful than comparing the pool shell price alone. These examples represent plausible bids, not guaranteed national rates.
| Example | Included scope | Estimated total |
|---|---|---|
| Basic vinyl | 10-by-20-foot pool, standard pump, limited deck, normal access | $34,000-$46,000 |
| Fiberglass with deck | 10-by-20-foot kidney shell, filtration, 400 sq ft concrete deck | $45,000-$65,000 |
| Custom concrete | 12-by-24-foot pool, custom curves, upgraded finish and equipment | $65,000-$90,000 |
A bid near the bottom may exclude fencing, landscaping, or electrical upgrades. Ask each contractor to list allowances, exclusions, and the assumed pool dimensions so the totals can be compared fairly.
How long excavation and installation usually take
Construction commonly takes 3-8 weeks after permits and materials are ready. A prefabricated fiberglass shell may be set in a few days, while site work, plumbing, deck installation, inspections, and startup extend the full schedule. A custom concrete pool can take 6-12 weeks or longer, especially when weather, curing, or subcontractor availability causes delays.
Scheduling in a busy spring or early-summer period can limit contractor availability and sometimes increase labor rates. Before accepting a quote, check whether the schedule includes excavation, shell placement, inspections, and deck completion or only the pool installation itself.
Regional labor and site work create different totals
Local labor rates and permitting can shift a comparable pool quote by 10%-25%. High-cost coastal metros and areas with strict inspections may run 15%-30% above a typical national budget. Many Midwest and Southern suburban markets fall closer to the middle of the ranges, while remote rural locations can cost more if equipment and crews must travel.
Climate and soil also matter. Frost-depth requirements, drainage controls, rocky ground, and high water tables may require additional engineering or construction steps. Obtain local bids that specify excavation assumptions and permit fees rather than applying a national average directly to a property.
Which add-ons can push a small pool beyond budget
Decking, fencing, heating, and difficult soil are common reasons a modest pool project exceeds its initial estimate. A pool heater may add $2,000-$5,000; a safety fence may cost $2,000-$6,000; and a saltwater system or upgraded lighting can add roughly $1,000-$4,000 combined. Larger patios, retaining walls, and landscaping are usually separate line items.
Rock removal or groundwater management can add $2,000-$15,000 or more depending on the site. Verify whether hauling excavated soil is included, since disposal fees and truck access vary. Local building departments may require barriers, alarms, or specific gate hardware, so include those requirements in the planned budget.
Ways to control the kidney pool budget without cutting essentials
Keeping the footprint, depth, and surrounding deck modest usually saves more than choosing minor equipment upgrades. Compare bids for the same 10-by-20-foot dimensions, finish, pump, deck area, fencing, and cleanup. A few clearly itemized quotes can reveal whether a low price omits necessary work.
Choose a standard shell or liner pattern when it suits the desired kidney shape, and avoid adding deep ends, waterfalls, or extensive hardscaping unless they are priorities. Complete basic yard preparation before the crew arrives only when the contractor approves it; uncoordinated work can cause delays or damage. Do not remove required safety equipment or drainage work just to lower the estimate.