Retaining Walls in Suffolk County

Retaining walls turn a slope into usable yard, hold back soil along driveways and stairwells, and frame patios. Masoncrete Builders builds segmental block walls, poured concrete walls and stone-veneer walls, and repairs and caps existing ones.

Andrew Raio wrote: "A buddy of mine needed a retaining wall, and after hearing about this company I reached out. They came out the same day to look at it, gave an estimate, and had us booked and ready to start that Monday."

Get a Free Estimate Call (631) 484-7272

Excavated slope behind a house in a wooded yard, prepared for retaining wall construction — Excavation for a retaining wall

Wall types

Segmental block walls (see also block work) with fitted caps, for terraces and planting beds.
Poured concrete walls and caps, like the new caps on our basement entrance rebuild.
Stone veneer for a dark stacked-stone look, including facelifts of existing walls.
Seat walls that border a patio or fire feature.

AI-generated illustration of a capped gray segmental block retaining wall holding back a sloped lawn, with gravel backfill at the open end and a paver patio below — Illustration: a capped segmental block retaining wall with gravel backfill. AI-generated illustration, not a Masoncrete project photo.

Why walls fail, and how we avoid it

Retaining walls fail when water builds up behind them or the base is weak. We excavate for a compacted base, set the first course level, and plan for drainage behind the wall so water can escape. Caps are fitted and secured to finish the top cleanly.

Stone veneer facelifts

If an existing wall is structurally sound but tired-looking, stone veneer can give it a clean, elegant finish. We posted one of these facelifts on Facebook and you can see it being installed below.

Retaining Walls photos

Black stacked-stone veneer wall with a smooth cap beside a light porcelain patio — Stacked-stone veneer wall with cap

Mason installing dark stacked-stone veneer panels and caps on a wall — Stone veneer facelift in progress

Mason fitting and cutting a cap on a segmental block retaining wall — Fitting retaining wall caps

First courses of a new concrete block wall going up beside scaffolding — First courses of the new block wall

Brick paver patio with wide steps down to a lower landing beside a low brick-faced wall — Paver patio, steps and low wall

See more in our project gallery.

Retaining Walls FAQ

How tall can a retaining wall be?

Taller walls may need engineering and permits. We will tell you what applies to your wall during the estimate.

Can you fix a leaning or bowing wall?

Often, yes, depending on its condition. We will assess whether it can be repaired or should be rebuilt.

Do you build walls around basement stairwells?

Yes. See our basement entrance rebuild project.

Where we install retaining walls

We provide retaining walls throughout Suffolk County, with frequent requests in Dix Hills, Huntington, Northport, Smithtown. All service areas: Dix Hills, Commack, Melville, Huntington, Northport, East Northport, Smithtown, Deer Park, Brentwood, Central Islip, West Babylon, West Islip, Centereach, Coram, Shirley, Plainview, Bethpage.

Related services

New concrete floor and drain grate at a basement door

Drainage

Drains, sump pumps, areaways and water management that keep water away from your home.

Block Work

Concrete block (CMU) walls, foundations and commercial wall reconstruction.

Concrete being placed from a mixer into a formed area next to a building

Poured Concrete

Slabs, footings, pads, walks and driveways, formed, reinforced and finished right.

Long brick-style paver walkway running along the side of a house into a wooded backyard

Brick Work

Brick steps, stoops, walls, borders and repairs with clean, tooled mortar joints.

Monday	9:00 am – 5:00 pm
Tuesday	9:00 am – 5:00 pm
Wednesday	9:00 am – 5:00 pm
Thursday	9:00 am – 5:00 pm
Friday	9:00 am – 5:00 pm
Saturday	8:00 am – 6:00 pm
Sunday	8:00 am – 6:00 pm