Retaining Wall Contractor on Staten Island, NY
The steepest residential lots in the city, the busiest retaining-wall ZIP codes in the city, and a Local Law 37 filing window that closes December 31, 2026.
NYC Retaining Walls is a licensed and insured retaining wall contractor serving Staten Island, from St. George and Grymes Hill to Todt Hill, Great Kills and Tottenville. If you need a retaining wall contractor on Staten Island, you're in the borough where the work is most concentrated: per resident, Staten Island has more permitted retaining-wall jobs and more Local Law 37–cited walls than any other borough (NYC Open Data, DOB filings and violations since 2015).
- Local Law 37 window
- Jan 1 – Dec 31, 2026 (open now)
- Terrain
- Serpentinite ridge to ~410 ft at Todt Hill; glacial moraine
- Most common jobs
- Driveway walls, terraced hillsides, timber-wall replacement
- Site visit
- Within 3 business days
Common retaining wall problems on Staten Island.
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Your LL37 report is due this year
Staten Island's Cycle 3 window closes December 31, 2026. Late filing now costs $1,000 a month on top of the $5,000-a-year failure-to-file penalty (1 RCNY §103-09, as amended March 2025).
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The driveway wall is moving
Steep driveways on the North Shore and mid-island put car weight right on top of the wall — a surcharge the original builder may never have designed for.
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The timber wall is rotting out
Railroad-tie and landscape-timber walls from the 1970s–90s building boom are reaching the end of their life all at once.
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Water is pouring through the face
Hillside lots send runoff straight at the wall. Without a drainage zone, the wall holds back water as well as soil.
Retaining wall services on Staten Island.
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Retaining Wall Inspection
Local Law 37 compliance: we coordinate an independent QRWI, prepare the wall, and handle required repairs. -
Retaining Wall Violation Repair
SREM and Unsafe ratings, DOB violations and complaints — repairs scheduled against your deadline. -
Hillside Retaining Walls
Terraced and tall walls for steep lots, including Special Hillsides and Natural Area District sites. -
Driveway Retaining Walls
Walls alongside and below sloped driveways, designed for vehicle surcharge and filed with DOB. -
Railroad Tie Retaining Wall Replacement
Rotted timber and railroad-tie walls removed and replaced with block or concrete built to last. -
Block Retaining Walls
Segmental block walls with geogrid reinforcement — terraces, yards and replacements for failed timber walls.
How we handle a Staten Island retaining wall job.
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Call or send photos
Tell us the street and what the wall is doing. Staten Island visits are scheduled in blocks to keep travel off your bill.
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Free site visit
Measured height, length and lean, a crack map, a drainage check and a DOB records lookup for the lot.
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Written scope and price
Repair, stabilize or rebuild, with engineering, permit and any zoning-district review spelled out.
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Build and closeout
Clean site, before-and-after photos, and the paperwork your inspector or insurer will ask for.
What makes Staten Island walls different.
Staten Island sits on two very different kinds of ground. The spine of the island — Grymes Hill, Emerson Hill, Todt Hill, Lighthouse Hill — is a ridge of serpentinite that reaches about 410 feet at Todt Hill, the highest natural point on the Atlantic coast south of Maine. Across the middle and south of the island, the Harbor Hill terminal moraine left a jumble of glacial sand, gravel and boulders. Both produce steep lots, and steep lots need walls: the North Shore ZIP code 10304 (Stapleton, Grymes Hill, Concord, north Todt Hill) has more permitted retaining-wall jobs and more Local Law 37–cited walls than any other ZIP code in New York City, and 10301 (St. George, Silver Lake) is second.
On the ridge, we plan around rock. Serpentinite often sits a few feet under the topsoil, which can mean pinning a footing to ledge rather than digging to a uniform depth, and it means hand-excavation where a machine can't reach. On moraine soil the problem is the opposite: mixed fill and boulders that drain unevenly, so the drainage zone behind the wall — clean crushed stone, filter fabric and a perforated pipe that daylights — matters more than the face material. On a moraine lot, a wall usually fails at the drainage long before the block or stone itself gives out.
Two land-use rules apply here that don't apply in most of the city. The Special Hillsides Preservation District (created in 1987) covers much of the North Shore hills, and the Special Natural Area District covers the Greenbelt (NA-1) and Shore Acres (NA-3). On qualifying sloped lots in those districts, regrading and new walls can need City Planning review before DOB will issue a permit, so we check the zoning map before we price a new wall. And because the island is a long drive from everything — we come in over the Verrazzano-Narrows Bridge and the Staten Island Expressway — we schedule Staten Island work in blocks, which keeps travel off your invoice.
Open Staten Island in Google Maps ↗ Why Staten Island owners call NYC Retaining Walls.
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Retaining walls are the focus
Site visits, estimates and repairs here are about one thing: walls that hold back soil — how they're drained, footed, reinforced and filed.
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Numbers on the first visit
Measured height, length and lean, a crack map and a DOB records check — not a guess from the curb.
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A written, line-item price
Repair, stabilize or rebuild, priced side by side, with engineering and permit steps spelled out.
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Licensed and insured
Licensed and insured for home improvement work in New York City, and we build to stamped plans when the code calls for them.
How we reach you on Staten Island.
From our Brooklyn office we cross the Verrazzano-Narrows Bridge and pick up the Staten Island Expressway, which puts every Staten Island neighborhood within reach of the I-278 exits. We group Staten Island site visits on the same days so a visit fits inside our standard window: a site visit within 3 business days of your call.
Staten Island neighborhoods we cover
- St. George
- Grymes Hill
- Silver Lake
- Stapleton
- Todt Hill
- Emerson Hill
- Lighthouse Hill
- Dongan Hills
- Westerleigh
- Great Kills
- Annadale
- Tottenville
Near landmarks like
- Staten Island Greenbelt
- Todt Hill summit
- Wagner College on Grymes Hill
- Clove Lakes Park
- Snug Harbor Cultural Center
- Historic Richmond Town
- Fort Wadsworth
- Silver Lake Park
Routes we use
- Verrazzano-Narrows Bridge (I-278)
- Staten Island Expressway (I-278)
- Korean War Veterans Parkway
- Richmond Avenue
- Hylan Boulevard
- Victory Boulevard
Transit: Staten Island Railway and the St. George Ferry Terminal.
Staten Island retaining wall questions.
Is my Staten Island retaining wall due for a Local Law 37 inspection in 2026?
If any part of the wall is 10 feet or taller and it fronts a public right-of-way — a sidewalk, street, alley or public stair — yes. Staten Island's Cycle 3 filing window runs January 1 to December 31, 2026. A Qualified Retaining Wall Inspector, who must be a New York–licensed engineer, inspects it and files the report with DOB within 60 days of the inspection.
How much does a retaining wall cost on Staten Island?
Published Staten Island figures put installed walls at about $21 to $64 per square foot of wall face (homeblue), and HomeAdvisor's Staten Island average for a retaining wall is about $6,000. One recent permitted segmental-block wall in Tottenville was filed with an estimated cost of $16,275. Height, drainage, access and whether the wall needs engineering move the price most.
Do I need City Planning approval for a wall in the Special Hillsides Preservation District?
Sometimes. On qualifying steep lots in the Hillsides district, and in the Greenbelt and Shore Acres Natural Area Districts, grading changes and new walls can require City Planning review before DOB issues a permit. We check the zoning map for your lot before we price the job, so the schedule includes any review time.
Who pays to fix a retaining wall between two Staten Island properties?
Under NYC Admin Code §28-305.1, a wall on the common lot line is the joint responsibility of both owners, half each. A wall entirely on one lot belongs to that owner, and the neighbor has to allow access for repairs. If you're not sure where the line runs, a licensed surveyor settles it.
How quickly can you get to Staten Island?
We schedule Staten Island visits in blocks and commit to a site visit within 3 business days of your call. If the wall is actively moving or has dropped material onto a sidewalk, tell us on the call. An Unsafe wall also has to be reported to 311, and we'll prioritize it.
Book a free Staten Island site visit
Thanks, we have your request.
Callback within 1 business hour. If it's urgent, call (718) 555-0100.
Nearby service areas.
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Todt Hill
The city's #1 neighborhood for wall work: driveway, terraced and stone walls on the ridge.
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Grymes Hill
North Shore hillside and LL37 walls inside the Special Hillsides Preservation District.
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Brooklyn
Rowhouse rear-yard walls, subway-cut walls, and the ridge from Green-Wood to Bay Ridge.
Retaining wall work on Staten Island?
We call you back within 1 business hour during business hours (Mon–Sat, 7am–7pm) and schedule a free site visit within 3 business days.