
Suffolk County · Islip · South Shore
Masonry Contractors in Great River, NY
Retaining walls, stoops, stone veneer, brick and chimney work for Great River homes — built by our own crews since 1991, licensed # 58161-H since 1994.
Local expertise
Why Great River masonry has to be built right.
APM O'Neill & Sons works throughout Great River, NY, a south shore community in Suffolk County under Town of Islip jurisdiction. Our crews handle retaining walls, front stoops and steps, chimney rebuilds and repointing, stone and brick veneer, and full paver patios and driveways for Great River homeowners. We've been building across Suffolk County for 35 years out of our Medford yard, and every job is run by our own crew — no subcontracted finish work. Free on-site estimates, licensed under # 58161-H, and financing available on most projects.
South Shore Islip neighborhoods sit close to the Great South Bay with high water tables, salt air and heavy coastal storms. Water that sits behind a wall or under a step is the number one enemy of masonry here.
Expect post-war ranches, expanded capes and a lot of post-Sandy raised homes. Raised homes mean taller entry stairs and landings, which we build with poured footings, block cores and stone or paver treads.
Salt and constant moisture eat through weak mortar fast. We use air-entrained concrete, polymer-modified mortar and sealed caps so stoops, piers and walls survive the bay climate.
Great River falls under Town of Islip permitting. Suffolk County frost depth is 42 inches, so every footing we pour reaches below that line. We evaluate grade, soil drainage, and runoff on-site before quoting, and detail drainage where the yard holds water in spring.
Services in Great River
Full-service masonry — locally.
Retaining Walls in Great River
Engineered segmental and natural stone walls with real drainage behind them.
Stoops & Steps in Great River
Footings below frost line, reinforced cores, stone, brick or paver treads.
Stone Veneer in Great River
Natural and manufactured stone facades, columns and foundation walls.
Brick & Block in Great River
Brick walkways, piers, planters and block construction done by hand.
Chimney & Repair in Great River
Rebuilds, repointing and crown repairs that stop water getting in.
Fire Pits & Fireplaces in Great River
Masonry fire features and seat walls built to last outdoors.
Our masonry work
What we build for Great River homeowners.



Raised-home staircases and longer landings add material and forming time, so South Shore stoop quotes often run a little higher than a standard three-step entry.
Nearby areas
Masonry near Great River.
FAQ
Masonry in Great River: common questions.
How much does masonry work cost in Great River, NY?
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It depends on scope and material. A small stoop repair can be a few thousand dollars, while a full stoop rebuild, stone veneer facade or engineered retaining wall costs more. Raised-home staircases and longer landings add material and forming time, so South Shore stoop quotes often run a little higher than a standard three-step entry. Every Great River estimate is free, on-site and itemized.
Do I need a permit for a stoop or retaining wall in Great River?
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Great River falls under Town of Islip. Many stoop rebuilds and taller retaining walls need a permit there. We check the rules for your address and pull any permits ourselves so you don't have to.
What masonry problems are common in Great River?
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South Shore Islip neighborhoods sit close to the Great South Bay with high water tables, salt air and heavy coastal storms. Water that sits behind a wall or under a step is the number one enemy of masonry here. Salt and constant moisture eat through weak mortar fast. We use air-entrained concrete, polymer-modified mortar and sealed caps so stoops, piers and walls survive the bay climate.
Are you licensed and insured for masonry in Great River?
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Yes. APM O'Neill & Sons is licensed in Suffolk County (License # 58161-H), fully insured, and has been building masonry on Long Island since 1991 with our own crews — no subcontractors.
Which towns near Great River do you also serve?
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We work all over Suffolk County, including East Islip, Central Islip, Islip Terrace, West Sayville. Our yard is in Medford, so most addresses are an easy drive for estimates and site visits.
Get a free masonry estimate in Great River.
Build now.
Pay monthly.
Flexible monthly payment plans for patios, driveways, and outdoor living projects across Suffolk County. Licensed & insured. Free estimates.

Financing provided by Hearth. 60-120 month terms. Subject to credit approval. Rates and terms vary by lender.
