
Retaining walls
built to hold.
Segmental block and natural-stone retaining walls with frost-depth footings, geogrid reinforcement, weep pipe, and drainage stone — engineered to hold grade for decades on Long Island soils..
Details that separate
good work from great.
Engineered footings
Frost-depth compacted base or poured footing per wall height and load.
Geogrid reinforcement
Geogrid tie-backs on any wall over 3 ft. — code-compliant and inspected.
Full drainage
Perforated weep pipe, 3/4" drainage stone, and geotextile behind the wall.
Cap & finish
Bull-nose, wash, or natural-stone caps set in polymer or mortar.
A portfolio
built across
Long Island.
Five steps. One crew.
A cohesive process engineered for durability and professional delivery.
- 01The Discovery
Free estimate
On-site measure, scope, and written proposal — no pressure, no upsell.
- 02The Blueprint
Design & materials
Layout, samples, and finishes confirmed before we mobilize.
- 03The Logistics
Build
Our own licensed crews — no subs — on-site daily until it's done right.
- 04The Build
Walk-through
Punch list closed, site cleaned, and written workmanship warranty issued.
Straight from
our neighbors.
Based on 6+ verified reviews from homeowners across Suffolk County. Every project is warrantied in writing and completed by our own crew — no subs.
Read all reviews on GoogleReady to get started? Free on-site estimates across Suffolk County.
(631) 480-3238Answers before
you call.
01Do I need a permit for a retaining wall?
Do I need a permit for a retaining wall?
Anything over 4 ft. of exposed face typically needs a permit and stamped drawing. We handle it in-house.
02Block or natural stone?
Block or natural stone?
Segmental block is stronger and cheaper per foot; natural stone is more architectural. We build both.
Retaining Walls across
all of Suffolk County.
Serving Long Island's South Shore and central corridor. Licensed, insured, and locally owned — 30+ years building for the towns listed below and every Brookhaven and Islip neighborhood in between.
- Retaining Walls in Medford, NY
- Retaining Walls in Bellport, NY
- Retaining Walls in Patchogue, NY
- Retaining Walls in Holbrook, NY
- Retaining Walls in Ronkonkoma, NY
- Retaining Walls in Sayville, NY
- Retaining Walls in Blue Point, NY
- Retaining Walls in East Patchogue, NY
- Retaining Walls in Bayport, NY
- Retaining Walls in Farmingville, NY
- Retaining Walls in Selden, NY
- Retaining Walls in Center Moriches, NY
More Masonry & Stonework
work we do.
APM O'Neill & Sons
Your Dream Outdoor Living Space With Low Monthly Payments
Flexible Monthly Payments Available
Licensed & Insured · Free Estimates · Serving Suffolk County, NY


