Retaining Wall Contractor in Brooklyn for Rear Yards, Ridges and Rail Cuts

Brooklyn's walls follow the ridge and the rails.

Brooklyn's hills are one long glacial ridge. The Harbor Hill terminal moraine forms the high ground of Green-Wood Cemetery, Sunset Park and Bay Ridge, and Owl's Head Park still keeps the moraine's rolling shape; south of it the land flattens into outwash plain. On the ridge, streets climb, houses sit a half-story above the sidewalk, and rear yards step down from one block to the next, so walls do real work. Bay Ridge ZIP 11209 ranks #20 citywide, driven by 51 Local Law 37–cited lots, though 45% of them sit on one block near Shore Road; Sunset Park ZIP 11220 had 34 permitted wall jobs since 2015, 71% of them on one- to three-family homes (NYC Open Data). Moraine backfill is a mix of sand, gravel and cobbles, and most of these walls are brick, CMU or poured concrete with little drainage behind them, so a rebuild here is as much about the drainage zone and the footing as the face.

The rail cuts are the other Brooklyn pattern. In 2019, DOB issued violations to homeowners in Bensonhurst and Ditmas Park whose rear walls border the open subway cuts on the N, Q and B lines; after the MTA accepted maintenance of those walls, owners pressed to have the violations rescinded, and some were still waiting months later (THE CITY, November 2019; Brooklyn Eagle, December 2019). The pattern still shows in the data: Bensonhurst–Mapleton ZIP 11204 and Flatbush ZIP 11226 each have 84 LL37-cited lots, concentrated on blocks that appear to back onto the rail cuts, while 11204 has only 8 permitted wall jobs. If your wall faces tracks, find out who owns it first: a signed and sealed survey, submitted to DOB with form RWIP-11, can show the wall belongs to the railroad. Our guide to retaining walls next to a subway or railroad covers the steps.

Most Brooklyn jobs are also tight-access jobs. A rowhouse rear yard rarely has a machine route, so excavation is by hand, block and stone come through the house or over a neighbor's yard, and spoil leaves the same way. That makes access between neighbors a practical issue as much as a legal one. Under Admin Code §28-305.1.2, a neighbor must allow access to repair a wall that sits entirely on your lot; RPAPL §881 lets a court grant temporary access, and it was amended in December 2025, so talk to a lawyer before relying on it. Brooklyn also has the most complaints of any borough for bulging or cracked walls, 1,313 since 2015, though that DOB category mixes building walls with retaining walls. See our shared retaining wall service for how we price and schedule a wall two owners pay for.