# Retaining Wall Inspection NYC | Local Law 37 & QRWI | NYC Retaining Walls

> Retaining wall inspection in NYC under Local Law 37: we line up an independent QRWI, prep the wall and do the repairs the report requires. Free site visit.

URL: https://nycretainingwalls.com/retaining-wall-inspection/

![Engineer seen from behind measuring a tall retaining wall beside a sidewalk on Grymes Hill, Staten Island](https://nycretainingwalls.com/images/engineer-measuring-tall-retaining-wall-height-grymes-hill-staten-island-1440.webp)

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2.  Retaining Wall Inspection

Staten Island due 12/31/2026

# Retaining Wall Inspection in NYC

Local Law 37 inspections must be signed by an independent engineer. We set that up, get the wall ready for it, and do the repairs the report calls for — on your filing deadline.

[Book a free site visit](https://nycretainingwalls.com/contact/) [Call (718) 555-0100](tel:+17185550100)

Engineer measuring a tall wall  
Hillside street · Grymes Hill, Staten Island

-   Walls 4 ft+ or carrying a surcharge need a DOB permit — 1 RCNY §101-14
-   Local Law 37: walls 10 ft+ fronting a public right-of-way, inspected every 5 years
-   Filing windows: Staten Island 2026 · Queens 2027 · Brooklyn 2028 · Bronx 2029 · Manhattan 2030
-   Drainage zone: clean crushed stone, filter fabric, perforated pipe that daylights
-   Segmental walls reinforced with geogrid to the engineer's design
-   Lot-line walls are shared 50/50 — NYC Admin Code §28-305.1
-   Written contract required on home improvement jobs over $500 — NY GBL §771

Last updated: October 18, 2026

[NYC Retaining Walls](https://nycretainingwalls.com/) is a licensed and insured retaining wall contractor that helps owners through retaining wall inspection in NYC under Local Law 37 of 2008. Be clear on the roles: the inspection itself — the condition assessment and the TR16 filing with the Department of Buildings — must be performed and signed by a **Qualified Retaining Wall Inspector (QRWI)**, a New York–licensed professional engineer with at least three years of experience with retaining walls over 10 feet. A contractor can't sign it, and neither can an architect. What we do is everything around it: confirm whether your wall is covered, connect you with an independent QRWI if you don't have one, prepare the wall so the inspector can see what they need to, and carry out the repairs the report requires.

## What we do on the first visit

The first visit is free and takes about 45 minutes. For an inspection-cycle owner it answers four questions:

1.  **Is the wall covered?** We measure the height at its tallest point, from the ground in front of the wall to the top, including any parapet or fence that holds back material, and look at what it fronts. A wall **10 feet or taller at any point** that fronts a public right-of-way is in the program (Admin Code §28-305.4).
2.  **What do DOB records say?** We check the property on the DOB Building Information System for the retaining-wall flag, earlier TR16 filings and their ratings, and any open failure-to-file violations.
3.  **What will the inspector need?** Clear access along the face and top, vegetation cut back from the wall, weep holes and drain outlets exposed, and any drawings, surveys or prior reports gathered in one place.
4.  **What does the wall look like now?** We note cracks, lean, bulging, drainage problems and missing material, so you know before the inspection what kind of repairs a report may call for.

You leave with a written prep list and, if you need one, an introduction to an independent QRWI.

## Which walls Local Law 37 covers

Local Law 37 exists because of a failure. On May 12, 2005, the private Castle Village retaining wall in Hudson Heights collapsed onto the Henry Hudson Parkway, and the Board of Inquiry that followed recommended periodic inspections by licensed professionals.

The rule (1 RCNY §103-09) applies to walls **10 feet or more in height at any point** that front a **public right-of-way** — defined broadly as a public highway, railroad, street, avenue, alley, public driveway, sidewalk, roadway or any other public place. Per DOB's FAQ, a wall that ranges from 4 to 12 feet is covered, and so is a wall on private land, such as one beside a parking lot or courtyard, if an unaffiliated member of the public can freely walk up to it. Height counts parapets and fencing that retain material, not just the soil.

Covered walls are inspected **every five years**, in a borough-by-borough window. Cycle 3 runs 2024–2028: the Bronx filed in 2024 and Manhattan in 2025; **Staten Island's window is open now and closes December 31, 2026**; Queens follows in 2027 and Brooklyn in 2028. Each window repeats every fifth year. The [Local Law 37 guide](https://nycretainingwalls.com/guide/local-law-37-retaining-wall-requirements/) and the [Staten Island deadline guide](https://nycretainingwalls.com/guide/staten-island-retaining-wall-inspection-deadline/) cover the rule and the dates.

## What the inspection involves, and where we fit

A Local Law 37 assessment is real engineering, not a walk-by. DOB's FAQ says an inspector can't simply assume dimensions for a wall with no drawings: probes, cores or test pits, at least one cross-section and supporting calculations are expected, and steep slopes call for a global stability analysis. The QRWI then files the TR16 report **within 60 days** of the inspection with one of four ratings: **Safe**; **Safe with minor repairs or maintenance**; **Safe with Repairs and/or Engineering Monitoring (SREM)**; or **Unsafe**.

Our part:

-   **Before:** clearing vegetation and debris, exposing drain outlets, opening access, and providing a crew if the inspector wants a test pit dug at the toe.
-   **After:** pricing and carrying out the repairs the report lists, to the inspector's specifications and, where needed, engineer-stamped plans and a DOB permit. An SREM condition must be addressed within the timeframe the report sets, no more than a year; an Unsafe condition must be corrected within 90 days. See [retaining wall violation repair](https://nycretainingwalls.com/retaining-wall-violation-repair/).
-   **Closeout:** photos and documentation for the QRWI's amended report.

Common items on a repair list — clogged weep holes, open mortar joints, vegetation rooted in the wall — fall within [retaining wall repair](https://nycretainingwalls.com/retaining-wall-repair/) and [drainage repair](https://nycretainingwalls.com/retaining-wall-drainage/).

## Shared walls, railroad frontage and other edge cases

A few situations come up often enough in DOB's own FAQ to plan for.

-   **Lot-line walls.** A wall on the common lot line is the joint responsibility of both owners, half the cost each, unless they agree otherwise (Admin Code §28-305.1.1). One QRWI can inspect and report on the whole wall, but each owner pays DOB's filing fees. See [shared retaining wall repair](https://nycretainingwalls.com/shared-retaining-walls/).
-   **Walls along railroad or subway cuts.** If you believe the wall belongs to the railroad, DOB asks for a signed and sealed survey with form RWIP-11. In 2019, Brooklyn owners along the subway open cuts received DOB violations for walls that New York City Transit later took responsibility for.
-   **Taking a wall out of the program.** DOB's FAQ says an engineer may lower the non-retaining portion of a wall, such as a parapet, below 10 feet — permitted work that we can build to the engineer's plans. A private lot can also stop being publicly accessible, for example with a gate kept closed.

None of these changes the deadline while the question is open, so start early.

## Inspection fees, deadlines and penalties

There is **no published price for a Local Law 37 inspection**, and we won't invent one. The QRWI sets the fee, and it is driven by the wall's length and height, access, whether drawings exist, how many test pits or cores are needed, and whether a slope stability analysis is required. DOB's own filing fees are fixed: **$355** for an initial report, **$130** for an amended report and **$260** for an extension request. When one report covers a wall shared by several lots, each owner pays the filing fees. Our [inspection cost guide](https://nycretainingwalls.com/guide/retaining-wall-inspection-cost-nyc/) lists what moves the inspector's price.

Missing the window is expensive. Under the amended rule that took effect March 23, 2025 (1 RCNY §103-09), failure to file carries a **$5,000 per year** penalty, late filing an additional **$1,000 per month**, failure to correct an Unsafe condition **$1,000 per month**, and an SREM condition left uncorrected until it is reported Unsafe a one-time **$2,000**. DOB's web page still shows older, lower amounts; the rule text controls.

Repairs found by the inspection are priced like any other work: minor repairs in NYC typically run about $325–$1,600 (Fixr, January 2025, × RSMeans NYC index 129.1), with a written line-item contract before work starts.

## What's included

-   ✓Free coverage check: height, frontage and DOB records
-   ✓Introduction to an independent QRWI if you need one
-   ✓Written prep list before the inspection
-   ✓Vegetation, debris and drain-outlet clearing
-   ✓Crew for test pits or access on inspection day
-   ✓Line-item price for repairs the report requires
-   ✓Repairs scheduled against SREM and Unsafe deadlines
-   ✓Closeout photos for the amended report

## DIY vs. cheap operator vs. a wall built properly

| Factor | DIY | Cheap operator | Built properly |
| --- | --- | --- | --- |
| Drainage behind the wall | Native soil backfill | A little gravel, no pipe | 12 in+ of clean crushed stone, filter fabric, perforated pipe that daylights |
| Footing | Set on topsoil or sod | Shallow, uncompacted | Compacted base, sized and set below the frost line to the design |
| Reinforcement | None | None | Geogrid or rebar to an engineer's design where height and load call for it |
| Permit and engineer (walls 4 ft+ or surcharged) | Skipped | Skipped or "not needed" | Stamped plans and a DOB filing |
| Local Law 37 (10 ft+ on a right-of-way) | Unknown | Ignored | Built and documented so the QRWI report goes smoothly |
| Paperwork you keep | None | A handwritten estimate | Written contract, line-item scope, closeout photos |
| Where it usually fails | First freeze-thaw seasons | Within a few years, at the drainage | Designed to carry its load for decades |

## Related resources

-   [Code Guide What Are the Local Law 37 Retaining Wall Requirements?](https://nycretainingwalls.com/guide/local-law-37-retaining-wall-requirements/)
-   [Code Guide When Is the Staten Island Retaining Wall Inspection Deadline?](https://nycretainingwalls.com/guide/staten-island-retaining-wall-inspection-deadline/)
-   [Cost Guide How Much Does a Retaining Wall Inspection Cost in NYC?](https://nycretainingwalls.com/guide/retaining-wall-inspection-cost-nyc/)
-   [Code Guide What Does an SREM Retaining Wall Rating Mean?](https://nycretainingwalls.com/guide/srem-retaining-wall-rating/)
-   [Code Guide How Do I Clear a Retaining Wall Failure to File Violation?](https://nycretainingwalls.com/guide/retaining-wall-failure-to-file-violation/)
-   [Code Guide Retaining Wall Next to Subway Tracks: Who Is Responsible?](https://nycretainingwalls.com/guide/retaining-wall-next-to-subway-or-railroad/)

## What this work looks like

Illustrative photos of this kind of work — not a specific customer's job.

-   ![Tape measure extended up a tall concrete retaining wall beside a sidewalk in Washington Heights, Manhattan](https://nycretainingwalls.com/images/tape-measure-against-tall-retaining-wall-beside-sidewalk-washington-heights-800.webp)
-   ![Crew clearing vines and brush from the face of a stone retaining wall ahead of an inspection in Riverdale, the Bronx](https://nycretainingwalls.com/images/crew-clearing-vine-growth-off-stone-retaining-wall-riverdale-bronx-800.webp)
-   ![Test pit dug at the toe of a concrete retaining wall to expose the footing on Staten Island](https://nycretainingwalls.com/images/test-pit-dug-at-toe-of-retaining-wall-staten-island-800.webp)
-   ![Gloved hand holding a crack-width gauge across a mortar crack in a Manhattan schist retaining wall in Inwood](https://nycretainingwalls.com/images/crack-gauge-on-schist-retaining-wall-inwood-manhattan-800.webp)

Talk to a person now.

Callback within 1 business hour. Mon–Sat, 7am–7pm.

[Call (718) 555-0100](tel:+17185550100) [Book a free site visit](https://nycretainingwalls.com/contact/)

Codes and standards we work to

-   Local Law 37 of 2008
-   NYC Admin Code §28-305.4
-   1 RCNY §103-09 (inspection rule)
-   1 RCNY §101-07 (QRWI qualifications)

Get a number first

[Cost estimator — length × height × material](https://nycretainingwalls.com/tools/retaining-wall-cost-estimator/)

## How retaining wall inspection works, _step by step._

1.  01
    
    ### Call with your address
    
    We check DOB records for the retaining-wall flag, past filings and open violations before we visit.
    
2.  02
    
    ### Free coverage visit
    
    We measure height and frontage, note current conditions and give you a written prep list.
    
3.  03
    
    ### Independent inspection
    
    Your QRWI inspects and files the TR16; we prep the site and provide access or test-pit help as needed.
    
4.  04
    
    ### Repairs and closeout
    
    We price and complete any required repairs and hand the inspector photos for the amended report.
    

Filing window _open?_

Free site visit and a written, line-item price before any work starts.

[Book a free site visit](https://nycretainingwalls.com/contact/) [Call (718) 555-0100](tel:+17185550100)

Callback within 1 business hour · Mon–Sat, 7am–7pm

## Retaining Wall Inspection _questions._

**### Can a contractor sign a Local Law 37 retaining wall report?**

No. The condition assessment and TR16 report must be signed by a Qualified Retaining Wall Inspector, who is a New York–licensed professional engineer with at least three years of relevant retaining-wall experience. Under DOB's rules even a registered architect cannot sign it. We coordinate with an independent QRWI, prepare the wall for the inspection and perform the repairs the report requires.

**### When is my retaining wall inspection report due?**

It depends on the borough. In Cycle 3, Staten Island reports are due by December 31, 2026, Queens in 2027 and Brooklyn in 2028. The Bronx (2024) and Manhattan (2025) windows have closed and come around again in 2029 and 2030. The report must be filed within 60 days of the inspection, so schedule the inspector well before the window closes.

**### My wall is under 10 feet next to the sidewalk. Does it need an inspection?**

Not under Local Law 37, which covers walls 10 feet or taller at any point fronting a public right-of-way. Height includes any parapet or fence that retains material, so measure to the top. A shorter wall still falls under the owner's general duty to keep the property safe, and DOB can act on complaints about it, so visible problems still need repair.

**### How much does a Local Law 37 inspection cost?**

No published price exists. The engineer's fee depends on wall length and height, access, whether drawings exist, how many probes, cores or test pits are needed, and whether a slope stability analysis is required. DOB's filing fees are fixed: $355 for the initial report, $130 for an amended report and $260 for an extension request, paid by each owner of a shared wall.

**### How fast can someone look at my wall?**

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. If the wall is actively moving, has dropped material onto a sidewalk, or has been rated Unsafe, say so on the call and we'll put it first.

## Related _services._

-   [![Bulging stone retaining wall temporarily shored with timber bracing behind safety fencing on a Bronx sidewalk](https://nycretainingwalls.com/images/stone-retaining-wall-shored-with-timber-bracing-bronx-sidewalk-800.webp)
    
    ### Retaining Wall Violation Repair
    
    SREM and Unsafe ratings, DOB violations and complaints — repairs scheduled against your deadline.](https://nycretainingwalls.com/retaining-wall-violation-repair/)
-   [![Contractor's gloved hand holding a crack-width gauge against a diagonal crack in a poured-concrete retaining wall above a weep hole](https://nycretainingwalls.com/images/crack-width-card-on-stepped-crack-in-concrete-retaining-wall-800.webp)
    
    ### Retaining Wall Repair
    
    Cracks, failed drainage, loose stone and block, cap and face repairs — fixed at the cause, not just patched.](https://nycretainingwalls.com/retaining-wall-repair/)
-   [![Perforated drain pipe bedded in clean crushed stone and filter fabric behind a retaining wall](https://nycretainingwalls.com/images/perforated-drain-pipe-in-crushed-stone-behind-retaining-wall-800.webp)
    
    ### Retaining Wall Drainage Repair
    
    Weep holes, perforated pipe and clean-stone drainage zones that take the water pressure off the wall.](https://nycretainingwalls.com/retaining-wall-drainage/)

Sources

1.  [NYC DOB — Retaining Walls (Local Law 37)](https://www.nyc.gov/site/buildings/safety/retaining-wall.page)
2.  [NYC DOB — Retaining Wall FAQ](https://www.nyc.gov/site/buildings/safety/retaining-wall-faqs.page)
3.  [1 RCNY §103-09 — Periodic inspection of retaining walls](https://www.nyc.gov/assets/buildings/rules/1_RCNY_103-09.pdf)
4.  [1 RCNY §101-07 — Qualified inspectors](https://www.nyc.gov/assets/buildings/rules/1_RCNY_101-07.pdf)
5.  [DOB Service Notice — Cycle 3 filing windows (Oct 2024)](https://www.nyc.gov/assets/buildings/pdf/retainingwall-sn.pdf)

Start with _the wall._

All five boroughs. A live person answers.

[Book a free site visit](https://nycretainingwalls.com/contact/) [Call (718) 555-0100](tel:+17185550100)

Callback within 1 business hour · Mon–Sat, 7am–7pm