New York · Local Pros · Updated 2026
172 pool builders serve the Islip area — we've ranked the top 20 by customer rating and review volume, so you can build a shortlist in minutes and compare bids like a pro.
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Ranked by customer rating and review volume across the whole Islip area. Every listing includes ratings, contact details, and location.
Want to dig past the top 20? Our nationwide pool builder finder maps all 172 companies serving the Islip area — search any address, sort by distance, and compare from there.
Typical inground pool projects in Islip run $59,000–$182,000+ installed, with most landing around $94,000 — New York pricing runs above the national average — expect the labor and permitting side of bids to show it. The build type sets the baseline:
| Pool type | Installed in Islip |
|---|---|
| Vinyl liner | $52k–$85k |
| Fiberglass | $65k–$117k |
| Gunite / concrete | $81k–$163k |
| Typical Islip project | $94,000 |
Treat these as planning numbers, then get three itemized bids from Islip builders before you commit. Quotes for an identical pool commonly land 20% apart in the same city, and the difference is usually scope rather than markup: decking, barrier fencing, the electrical run to the equipment pad, and putting the yard back are the items a low bid tends to leave off.
See the full national line-item breakdown in our inground pool cost guide, and pressure-test any financing offer with the pool loan calculator before you sign.
Every market has its quirks — here’s what actually moves budgets and timelines for New York builds:
Not sure what style fits your yard? Browse pool design ideas and pool shapes before your first builder meeting — homeowners who show up with pictures get accurate bids weeks faster. And if you’re comparing builders beyond Islip, the New York pool builders guide and our nationwide finder cover the whole map.
Bids for decking, shade, and an outdoor kitchen are far cheaper while the excavator is already in your yard.
Homeowners in Islip can choose from 172 pool building companies — from design-build firms handling everything through landscaping, to specialists in renovations and equipment upgrades. The ranked list above averages 4.8 stars across 3459 verified customer reviews. PoolPad sorts by a weighted blend of rating and review volume rather than rating alone, which is why a 4.8 with hundreds of reviews sits above a perfect score with three.
New York's pool market splits three ways: Long Island's dense, mature pool culture, the Hudson Valley and upstate metros' vinyl-liner heartland, and the Hamptons' anything-goes gunite showcase. Costs run among the highest in the nation, and good builders book the season out by March. For the statewide picture — top-rated pros, city-by-city counts, and New York pricing — see the New York pool builders directory.
When hiring a pool builder in Islip, weigh their experience with local soil conditions and permitting, the range of pool types they offer (gunite, fiberglass, vinyl liner), and whether they handle landscaping and hardscaping in the same contract. Look at completed projects, verify licensing and insurance for New York, and ask about post-construction warranties. The best builders provide a detailed written contract covering timeline, materials, and total cost — and get at least three itemized bids before you commit, because prices for the same pool routinely vary 20% or more between Islip builders.
Most inground pool projects in Islip, NY run $59,000 to $182,000+ installed, with typical projects landing around $94,000. By build type: vinyl liner $52k–$85k, fiberglass $65k–$117k, and gunite/concrete $81k–$163k. Frost depth drives construction: plumbing runs deep, shells and decks are engineered for freeze-thaw, and the fall close protects it all. Long Island digs sand (easy) while upstate and the lower Hudson Valley hit rock ledge and glacial till — blasting or hammering shows up in bids. Tight suburban lots make access planning part of the price. Request itemized quotes from at least three of the builders listed here to see real numbers for your yard.
Most inground pool projects in Islip take 8–16 weeks from permit approval to completion. Factors like weather, permitting timelines, material availability, and the complexity of your design can affect the schedule. Ask your builder for a detailed project timeline during the quoting process.
Start by comparing the 20 pool builders listed here, ranked by customer reviews. Look for builders with a high rating (4.5+), a large number of reviews, years of experience, and services that match your project. We recommend contacting at least 3 builders for quotes. Check their portfolios and ask about warranties, timelines, and permitting.
Yes — Islip and most municipalities in New York 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 Islip runs Memorial Day through mid-September — about 4 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. The realistic unheated season is Memorial Day to mid-September — heaters are less a luxury than the price of using what you built. Winters are long and freezing, so a professional close is standard everywhere in the state.
Pappy's Ultimate Pools & Outdoor Living currently leads the Islip rankings at 5 stars across 118 reviews, with Gappsi, Inc. carrying the deepest review history (525 reviews at 4.8 stars). PoolPad ranks by a weighted blend of rating and review volume, so consistent performers rise above small-sample five-stars — but always get more than one quote.
New York has no single statewide contractor license — licensing runs by county and city (Nassau, Suffolk, Westchester, and NYC all license home improvement contractors), so verify locally. Statewide, new pools must meet the residential code's barrier requirements and include a pool alarm; towns layer their own fence and setback rules on top.
Frost depth drives construction: plumbing runs deep, shells and decks are engineered for freeze-thaw, and the fall close protects it all. Long Island digs sand (easy) while upstate and the lower Hudson Valley hit rock ledge and glacial till — blasting or hammering shows up in bids. Tight suburban lots make access planning part of the price. Vinyl liner rules on value across upstate and much of Long Island; gunite owns the high end from Westchester to the East End. Automatic safety covers are widespread, salt systems keep growing, and compact heated plunge pools are the new city-adjacent trend.
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