Missouri · Local Pros · Updated 2026
42 pool builders serve the St. Charles area. This page shows the top 20, ordered by a weighted mix of customer rating and review count, with local cost guidance for planning your shortlist.
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Ordered by customer rating and review count across the St. Charles area. Listings include the available rating, contact details, and location; confirm current credentials and scope directly.
Need the full market? The nationwide pool builder finder maps all 42 companies serving the St. Charles area and lets you search by address or sort by distance.
Typical inground pool projects in St. Charles run $43,000–$133,000+ installed, with many landing near $68,000. Missouri pricing is close to the national baseline used for these estimates. Use the pool type as a starting point:
| Pool type | Installed in St. Charles |
|---|---|
| Vinyl liner | $38k–$62k |
| Fiberglass | $48k–$86k |
| Gunite / concrete | $59k–$119k |
| Typical St. Charles project | $68,000 |
Treat these as planning numbers, then get three itemized bids against the same scope. Quotes for an identical pool can land 20% apart in one city; compare decking, barrier fencing, electrical runs, drainage, permits, and yard repair before comparing the bottom line.
The inground pool cost guide covers common line items, and the pool loan calculator shows what the financed portion does to the monthly payment.
Discuss these Missouri conditions before a builder finalizes the price and schedule:
Bring a few reference photos and a rough must-have list to each site visit so builders quote the same target. Browse pool design ideas and pool shapes; to search farther out, use the Missouri pool builders guide or the nationwide finder.
Ask for decking, drainage, shade, lighting, and outdoor-kitchen work as separate options while access is still open.
St. Charles market
4.3 average customer rating · 1034 reviews · 42 companies
See All on the Map →42 pool building companies serve the St. Charles area, covering new inground pools, backyard renovations, and spa additions from design and permitting through finish work. The ranked builders average 4.3 stars across 1034 customer reviews. Ordering uses rating and review count together, so a longer track record carries more weight than a small set of scores.
Kansas City and St. Louis support parallel markets where vinyl, fiberglass, and gunite all have a meaningful share. Springfield and Lake of the Ozarks projects add rock, slope, and resort-property considerations to otherwise value-oriented state pricing. For statewide rankings, city counts, and Missouri pricing, see the Missouri pool builders directory.
Ask about experience with St. Charles soil, access, drainage, and permit offices, then check completed projects in the pool type you want: gunite, fiberglass, or vinyl liner. Confirm current licensing where required and insurance with the issuing source. The contract should spell out materials, allowances, exclusions, timeline, change-order pricing, payment milestones, and warranty responsibility. Compare at least three itemized bids against the same scope.
Most inground pool projects in St. Charles, MO run $43,000 to $133,000+ installed, with typical projects landing around $68,000. By build type: vinyl liner $38k–$62k, fiberglass $48k–$86k, and gunite/concrete $59k–$119k. Clay soils around both metros need drainage design and properly compacted backfill; the Ozarks add rock excavation that belongs in a written per-yard clause. Sloped lots in St. Louis County and lake areas often bring retaining walls into the bid. Request itemized quotes from at least three builders to price your site and scope.
Most inground pool projects in St. Charles take 8–16 weeks from permit approval to completion. Weather, inspections, material availability, access, and design complexity can extend the schedule. Ask each bidder to separate permit lead time from construction time and identify the milestones that control payments.
Use the customer rating and review count to narrow the 20 builders listed here, then inspect recent projects and reviews. Confirm current licensing where required, insurance, permit responsibility, warranties, and payment milestones. Give at least three builders the same project brief so their itemized quotes are comparable.
Yes — St. Charles and most municipalities in Missouri require building permits for swimming pool construction, covering structural, electrical, and plumbing inspections plus barrier/fencing requirements. Most builders listed here handle the permitting process as part of the project — confirm it in writing, along with who schedules each inspection.
The outdoor season in St. Charles runs May through September — about 5 months unheated, and most owners add a heater to stretch both shoulders. A full professional winterization each fall protects plumbing and equipment through the freeze. May through September with hot, sticky midsummers that make the pool the family HQ. Winters freeze properly statewide, so October closes and April openings frame the year.
Icon Outdoors has the highest customer rating in this St. Charles list at 5 stars across 17 reviews. Prestige Pools & Spas has the largest review count (250 reviews at 4.5 stars). The directory order uses rating and review count together, so the highest star average is not always the number-one result.
Missouri handles residential contractor licensing at the city and county level, so check insurance certificates and references and confirm a licensed electrician handles the equipment permit. Pool permits and residential-code barrier requirements run through the municipality.
Clay soils around both metros need drainage design and properly compacted backfill; the Ozarks add rock excavation that belongs in a written per-yard clause. Sloped lots in St. Louis County and lake areas often bring retaining walls into the bid. Vinyl liner and fiberglass carry the volume; gunite leads in the country-club corridors of both metros. Tanning ledges, firepits, and covered outdoor living are fully mainstream here.
Check pool builders in cities near St. Charles, or open the Missouri directory for every listed market in the state.
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