
Suffolk County · Brookhaven · Central Suffolk
Masonry Contractors in Mastic Beach, NY
Retaining walls, stoops, stone veneer, brick and chimney work for Mastic Beach homes — built by our own crews since 1991, licensed # 58161-H since 1994.
Local expertise
Why Mastic Beach masonry has to be built right.
APM O'Neill & Sons works throughout Mastic Beach, NY, a south shore community in Suffolk County under Town of Brookhaven 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 Mastic Beach 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.
Central Suffolk sits inland on deep glacial sand. It drains well, but winters swing hard through freeze and thaw, and any footing poured above the 42-inch frost line will heave a stoop or wall out of level within a few seasons.
Most Brookhaven streets are 1950s–80s capes, ranches and high-ranches. The masonry we rebuild most often is the original poured or block front stoop, settled brick walkways, and short landscape walls holding sloped front yards along the Route 112 and LIE corridors.
Failed stoops here almost always trace back to shallow footings or missing drainage behind a wall. We dig to frost depth, install clean stone and weep drainage, and reinforce every step so it stays put.
Mastic Beach falls under Town of Brookhaven 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 Mastic Beach
Full-service masonry — locally.
Retaining Walls in Mastic Beach
Engineered segmental and natural stone walls with real drainage behind them.
Stoops & Steps in Mastic Beach
Footings below frost line, reinforced cores, stone, brick or paver treads.
Stone Veneer in Mastic Beach
Natural and manufactured stone facades, columns and foundation walls.
Brick & Block in Mastic Beach
Brick walkways, piers, planters and block construction done by hand.
Chimney & Repair in Mastic Beach
Rebuilds, repointing and crown repairs that stop water getting in.
Fire Pits & Fireplaces in Mastic Beach
Masonry fire features and seat walls built to last outdoors.
Our masonry work
What we build for Mastic Beach homeowners.



A typical Brookhaven stoop rebuild or 2–3 ft retaining wall is a single-crew job of a few days, which keeps pricing straightforward and itemized.
FAQ
Masonry in Mastic Beach: common questions.
How much does masonry work cost in Mastic Beach, 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. A typical Brookhaven stoop rebuild or 2–3 ft retaining wall is a single-crew job of a few days, which keeps pricing straightforward and itemized. Every Mastic Beach estimate is free, on-site and itemized.
Do I need a permit for a stoop or retaining wall in Mastic Beach?
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Mastic Beach falls under Town of Brookhaven. 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 Mastic Beach?
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Central Suffolk sits inland on deep glacial sand. It drains well, but winters swing hard through freeze and thaw, and any footing poured above the 42-inch frost line will heave a stoop or wall out of level within a few seasons. Failed stoops here almost always trace back to shallow footings or missing drainage behind a wall. We dig to frost depth, install clean stone and weep drainage, and reinforce every step so it stays put.
Are you licensed and insured for masonry in Mastic Beach?
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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 Mastic Beach do you also serve?
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We work all over Suffolk County, including Yaphank, Ridge, Mastic, Moriches. Our yard is in Medford, so most addresses are an easy drive for estimates and site visits.
Get a free masonry estimate in Mastic Beach.
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.
