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Free Building Background Check

171 St Marks Avenue

BROOKLYN, NY 11238 BBL 3011440081 9 units · 4 floors · 1880

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

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Rent & eviction protection

Is 171 St Marks Avenue 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 1880
6 or more units
9 units
Registered with RGB
Not found
421-A / J-51 abatement
None found
Potential rent stabilization. Building age and size suggest eligibility — confirm with the DHCR (Division of Housing and Community Renewal) or request a rent history.

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

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How we score buildings

How 171 St Marks Avenue'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
83th percentile

Out of 599 buildings in this neighborhood, 497 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
94.3%
No serious
violations
4.0%
Some violations
(1–9)
1.6%
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.

Neighborhood location

The model uses precise location as a proxy for neighborhood-level risk patterns — some blocks have systematically higher violation rates.

Building code violations (past 7 years)

Building code violations issued by the Dept. of Buildings (separate from HPD housing violations).

Minor violation rate, landlord's portfolio

Per-building rate of minor violations across the landlord's portfolio.

Building characteristics
Total units9
Floors4
Year built1880
Gross area3,980 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

171 St Marks Avenue'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.

Individual Owner

Registered contact for this building.

Name
Raphael Myrthil
Address
171 171 Saint Marks Ave fl
Brooklyn, NY 11238
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

Reviews from 171 St Marks Avenue tenants

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

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On the map

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