
Suffolk County · The Hamptons & East End
Masonry Contractors in Shelter Island, NY
Retaining walls, stoops, stone veneer, brick and chimney work for Shelter Island homes — built by our own crews since 1991, licensed # 58161-H since 1994.
Local expertise
Why Shelter Island masonry has to be built right.
APM O'Neill & Sons works throughout Shelter Island, NY, an east end community in Suffolk County under Town of Shelter Island 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 Shelter Island 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.
Ocean air, sandy soils and long vacant off-seasons out east mean masonry has to handle salt, wind-driven rain and freeze-thaw with nobody watching it for months.
Shingle-style estates, farmhouses and modern builds with pool terraces, bluestone patios, stone walls and outdoor fireplaces. Natural stone is the standard here.
Pool coping, stone walls and outdoor fireplaces near the water need sealed joints and drainage built in from the start. We plan every East End job around the off-season.
Shelter Island falls under Town of Shelter Island 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 Shelter Island
Full-service masonry — locally.
Retaining Walls in Shelter Island
Engineered segmental and natural stone walls with real drainage behind them.
Stoops & Steps in Shelter Island
Footings below frost line, reinforced cores, stone, brick or paver treads.
Stone Veneer in Shelter Island
Natural and manufactured stone facades, columns and foundation walls.
Brick & Block in Shelter Island
Brick walkways, piers, planters and block construction done by hand.
Chimney & Repair in Shelter Island
Rebuilds, repointing and crown repairs that stop water getting in.
Fire Pits & Fireplaces in Shelter Island
Masonry fire features and seat walls built to last outdoors.
Our masonry work
What we build for Shelter Island homeowners.



Larger East End properties and natural-stone scopes are quoted individually, and we schedule around the summer season so the yard is ready on time.
FAQ
Masonry in Shelter Island: common questions.
How much does masonry work cost in Shelter Island, 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. Larger East End properties and natural-stone scopes are quoted individually, and we schedule around the summer season so the yard is ready on time. Every Shelter Island estimate is free, on-site and itemized.
Do I need a permit for a stoop or retaining wall in Shelter Island?
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Shelter Island falls under Town of Shelter Island. 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 Shelter Island?
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Ocean air, sandy soils and long vacant off-seasons out east mean masonry has to handle salt, wind-driven rain and freeze-thaw with nobody watching it for months. Pool coping, stone walls and outdoor fireplaces near the water need sealed joints and drainage built in from the start. We plan every East End job around the off-season.
Are you licensed and insured for masonry in Shelter Island?
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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 Shelter Island do you also serve?
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We work all over Suffolk County, including Orient, East Marion, New Suffolk, Westhampton. Our yard is in Medford, so most addresses are an easy drive for estimates and site visits.
Get a free masonry estimate in Shelter Island.
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.
