New York · Gunite & Concrete Pool Builders · Updated 2026
Any shape, any depth, any feature: 14 gunite pool builders serving Islip, ranked by rating and review count, with what a gunite pool costs to build in Islip this year.
Ordered by customer rating and review count across the Islip area. Listings include the available rating, contact details and location; confirm current credentials and scope directly.
Planning a new pool as well? The Islip pool builders directory ranks all 170 builders in the area.
A mid-size gunite pool (about 16×32) with a standard plaster finish in Islip typically runs $97,500–$156,000. Spas, premium finishes, features and decking are where custom pools climb from there:
| Job | Typical Islip price |
|---|---|
| Small gunite pool (about 12×24), plaster finish | $71,500–$104,000 |
| Mid-size gunite pool (about 16×32) | $97,500–$156,000 |
| Large or elaborate custom pool | $156,000–$325,000+ |
| Attached gunite spa with spillover | $19,500–$45,500 |
| Pebble or quartz finish upgrade | $6,500–$15,500 |
| Tanning ledge or beach entry | $4,000–$10,500 |
| Water features, lighting, fire bowls | $2,500–$19,500 |
| Decking and coping | $10,500–$32,500 |
| Rock or hard-dig excavation allowance | $4,000–$19,500 |
| Permits, engineering, soils report | $1,000–$5,200 |
New York pricing is above the national baseline used for these estimates, mainly on labor and permitting. Gunite bids vary more than any other pool type because every element is custom — compare the shell thickness, steel schedule, finish, feature and equipment lines, not just the bottom number.
Spas, ledges, benches, lighting niches and water features are cheapest when they are shot into the shell — adding them later means cutting concrete.
5 stars from 75 reviews
View Company →Islip market
4.5 average customer rating · 1744 reviews · 14 companies
See All on the Map →14 gunite pool builders serving Islip. The ranked companies average 4.5 stars across 1,744 customer reviews. PoolPad orders the list with a weighted score that combines customer rating and review count, so a long track record counts for more than a handful of scores.
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.
For statewide rankings, city counts and New York prices, see the New York gunite pool builders directory, or check the nearby cities below.
Ask for the shell engineering and the gunite crew's track record, read the structural, finish and equipment warranties separately, and compare at least three itemized bids for the same design. 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.
A mid-size gunite pool with a plaster finish in Islip, NY typically runs $97,500–$156,000; small pools run $71,500–$104,000 and large custom designs $156,000–$325,000+. An attached spa adds $19,500–$45,500, a pebble or quartz finish $6,500–$15,500, and decking $10,500–$32,500. New York pricing is above the national baseline used for these estimates, mainly on labor and permitting.
Both are concrete sprayed over a steel cage. Gunite is a dry mix with water added at the nozzle; shotcrete is wet-mixed concrete pumped through the hose. Each produces a strong shell when applied by a good crew — the nozzleman's skill, the mix design and proper curing matter more than which method is used. Ask which your builder uses and what thickness is specified.
Plan on eight to sixteen weeks from excavation to swimming: dig and steel in the first week or two, the shell shot and cured for about four weeks, then tile, coping, plumbing, equipment, decking and finally the plaster and fill. Permits add two to eight weeks before the dig. Freezing weather pauses shell and plaster work, so most builds are scheduled for the warm months.
The concrete shell can last 50 years or more. The plaster finish lasts about 10 to 15 years (quartz and pebble 15 to 20 or more), waterline tile and coping 15 to 25 years, and equipment 8 to 15 years. Balanced water, especially calcium hardness and pH, is what protects the finish.
The outdoor season in Islip runs Memorial Day through mid-September — about 4 months unheated. A full professional winterization each fall protects plumbing and equipment through the freeze, and spring openings cluster into the same few weeks. 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.
Agape Pools Builder and Renovations Liner Replacement has the highest customer rating on this Islip list at 5 stars across 75 reviews. Gappsi, Inc. has the largest review count (525 reviews at 4.8 stars). PoolPad orders the list with a weighted score that combines customer rating and review count, so a long track record counts for more than a handful of scores.
Usually, for the same size: the shell is built on site, the finish is a separate trade, and custom features add up. The gap narrows for large pools and designs with spas and ledges, where fiberglass models are limited. Over 20 years a gunite pool also needs at least one resurfacing, which is part of its true cost.
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.
Check gunite pool builders in cities near Islip, or open the New York directory for every listed market in the state.
Claim your free PoolPad listing, check gunite among the pool types you build, and show Islip homeowners planning a custom pool what you construct.
