You've used all your free reports this month. Create a free account to keep checking buildings.
Create free account Log in
Free Building Background Check

51 St Marks Place

BROOKLYN, NY 11217 BBL 3003890047 4 units · 4 floors · 1899

Create a free account to view the full analysis for this building and 516 others nearby.

HPD violations vs. neighborhood
Class B/C violations on record vs. a typical building in Boerum Hill
? vs. avg
Fewer violations More violations

Sign in to see how this building compares to others in Boerum Hill.

Rent & eviction protection

Is 51 St Marks Place rent-stabilized?

Rent stabilization caps how much your rent can rise and protects your right to renew. Here's how this building scores on the four signals that usually point to it.

Built before 1974
Built 1899
6 or more units
4 units
Registered with RGB
Not found
421-A / J-51 abatement
None found
Likely not rent stabilized. This building doesn't show the typical signals — but confirm with the DHCR (Division of Housing and Community Renewal) if you suspect otherwise.

Based on public NYC records. Not legal advice — verify with the DHCR (Division of Housing and Community Renewal) at apps.hcr.ny.gov.

Augrented Insights
AI summary · updated June 2026

The 4-unit, 4-story brownstone at 51 St Marks Place in Boerum Hill, built in 1899 and currently owned by Howard Mandel, has demonstrated a significant pattern of construction-related compliance issues over the past several years. Most notably, in 2021, the building faced multiple Construction Safety Compliance (CSC) Actions, including an Oath Violation and a Stop Work Order which was ultimately fully rescinded in April 2022. A similar pattern was observed in 2019, when the building received a Stop Work Order that was also fully rescinded in August 2020. The Department of Health and Mental Hygiene was involved in a rodent-related complaint in September 2019, though no resolution was specified, and there was one additional complaint in December 2019 that resulted in no violations being found upon inspection.

On a positive note, the building has maintained a clean record regarding bedbug infestations, with the most recent two annual filings (2023-2024 and 2022-2023) reporting zero infested, eradicated, or re-infested dwelling units. This pattern of successful pest management is noteworthy, particularly given the building's age and location. While the construction-related incidents from 2019 through 2022 might suggest a period of regulatory scrutiny, the absence of recent complaints and the building's age give context to these historical issues. The most current data up to October 2023 indicates no major safety or habitability concerns, though it's worth noting that the most recent complaint records are from 2021-2022, which is now approximately three years ago.

Create a free account to read the full AI summary and unlock the complete report.
How we score buildings

How 51 St Marks Place's risk score is calculated

We trained a model on 7 years of city inspection data — HPD violation filings, tenant complaints, and owner track records across their entire portfolio. It estimates the probability that HPD inspectors will find serious or dangerous violations at this address in the next 12 months. Lower % = safer.

What the score means for you

Neighborhood percentile
44th percentile

Out of 516 buildings in this neighborhood, 227 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
76.4%
No serious
violations
20.6%
Some violations
(1–9)
3.0%
Many violations
(10+)
Risk factors

What's driving this score

These are the three data points that most influenced this building's score — ranked by how much weight the model placed on each one.

DOB complaints, property manager's portfolio

Building complaints logged against properties under this manager.

Emergency violations, property manager's portfolio

Emergency violations across buildings under this property manager.

Hazardous violations, property manager's portfolio

Hazardous violations across all buildings this manager is registered on.

Building characteristics
Total units4
Floors4
Year built1899
Gross area5,740 sq ft
Building class
Tax abatementNone
Issue trend & model projection

Violations & complaints per year — solid line is historical record, dashed line is AI projection.

Who's behind the building

51 St Marks Place's landlord & ownership

The people and companies registered to this building, the other properties they run, and their court record. A landlord's wider portfolio is often the best predictor of how your building will be treated.

Corporate Owner

Registered contact for this building.

Name
51 St.marks Place LLC
Address
9920 4Th Avenue 305
Brooklyn, NY 11209
Landlord portfolio

Other properties owned.

Portfolio data hidden

Sign up to see all properties owned by this landlord, with risk grades for each.

Create free account
What residents say

Reviews from 51 St Marks Place tenants

Real experiences from people who have lived here. Share your honest feedback to help others make informed decisions.

Share your experience — Help other renters by leaving an honest review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…

You've reached your free report limit

Create a free account to view 5 buildings a month — no credit card needed.

Create free account Log in

Or see paid plans for unlimited access

Watch 51 St Marks Place
Get an email the moment a new violation or complaint is filed.