Pool renovation and resurfacing in the Hamptons: plaster, pebble, tile, coping, salt and covers

The renovation that comes due

Gunite pools on the South Fork built in the 1990s and 2000s are on their second or third finish; the 2020–2022 pools will get there in the 2030s. Plaster lasts about 10 years when it is applied well, and the signs are the same on every pool: rough patches, stains that will not brush off, hollow spots that sound different, and a water-chemistry problem that no amount of acid fixes. Vinyl pools run on a different clock: a Long Island liner lasts 8–10 years.

What it costs (2026)

Work	Cost
Plaster (marcite) resurfacing	about $4 per sq ft; about a 10-year finish
Quartz aggregate	$5–10+ per sq ft; $7,000–10,000 typical
Pebble finish	$10–20 per sq ft; $4,000–16,000 for a 400–800 sq ft pool; $4,000–8,000 more than plaster; 20+ years
Whole resurfacing project	$6,000–15,000 typical for plaster or quartz (about $11,000 average); $9,000–20,000+ for pebble or premium tile on larger pools
Coping (Long Island)	bluestone $25–50 per linear foot · travertine $20–45 · porcelain $25–50 · concrete paver $15–30 · premium natural stone $40–75+
Vinyl liner replacement (Long Island)	$5,000–7,500 every 8–10 years, 28-mil spec
Salt conversion	$500–3,500 (about $1,000 typical): generator $600–2,000 plus $100–500 to install; no draining if the water is balanced
Automatic cover	$15,000–25,000 typical, up to $30,000 custom; branded systems $10,000–20,000
Safety cover, mesh / solid	$1,000–3,000 / $1,500–3,600
Automation retrofit	$2,800–6,500 (new build $2,000–5,000)
Acid wash instead of resurfacing	$120–1,500, most about $450

The Long Island coping figures come from local contractors' own pages that disagree with each other; we print the spread.

Plaster, quartz or pebble

Plaster is the smooth, classic finish and the cheapest, and it is the one that needs redoing every decade. Quartz is plaster with quartz aggregate: harder, more stain-resistant, a little more. Pebble finishes are the long-life answer, 20 years and more, with a textured surface that some feet love and some do not, and a price $4,000–8,000 above plaster. Fully tiled pools are the top of the market and priced by the tile.

The order of operations

Coping and tile first, then the finish. New coping over an old, failing tile band is money spent twice; a new plaster job scarred by coping work afterward is worse. A renovation on a gunite pool typically runs: drain (never on a rising water table without a hydrostatic relief plug open), chip or bond-coat the old surface, replace the tile band and coping, repair the shell, apply the finish, fill and start up with the chemistry the finish maker specifies. Salt systems, automation and covers go in during the same drain-down.

Salt

A salt conversion is not a different pool, it is a different way of making chlorine: a generator on the return line and 3,000-odd pounds of salt in the water. Ongoing chemicals drop to under $100 a year against $175–800 for chlorine, the water feels softer, and the cell needs replacing every 3–6 years at $200–1,800 (four sources, four ranges). The trade-offs are corrosion, of copper heat exchangers, of soft stone coping and of anything steel near the water, which is why a salt conversion on the South Fork comes with a cupro-nickel heater exchanger and sealed bluestone. Salt does not suit a natural-cleft limestone coping.

Covers

An automatic safety cover ($15,000–25,000) keeps heat in, leaves and children out, and, under New York's pool-alarm rule, a pool with an automatic safety cover does not need the alarm. It is the single most useful upgrade for a second home. A mesh or solid safety cover ($1,000–3,600) is the winter answer.

Rules

A resurfacing rarely needs a permit; new coping and decking count toward lot coverage in the villages (20% of the lot in East Hampton Village; 14% plus 1,500 sq ft in Southampton Village), a new automatic cover and its electrical need a licensed electrician, and in the Sag Harbor historic district visible changes to a terrace need a Certificate of Appropriateness. Drain-down water goes to a drywell or, dechlorinated, to the ground, never to the street: the South Fork sits on its own drinking water.