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Free Building Background Check

3900 Neptune Avenue

BROOKLYN, NY 11224 BBL 3070010024 3 units · 2 floors · 1925

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

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Rent & eviction protection

Is 3900 Neptune 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 1925
6 or more units
3 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

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How we score buildings

How 3900 Neptune 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
65th percentile

Out of 139 buildings in this neighborhood, 90 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
90.6%
No serious
violations
5.9%
Some violations
(1–9)
3.5%
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.

Building age

Older buildings tend to have more maintenance challenges, particularly pre-war construction without modern infrastructure.

Building assessed value

The city's assessed value reflects building size and neighborhood — the model uses it as an additional size and location signal.

Minor violations, landlord's portfolio

Total minor HPD violations across all buildings under this owner over 7 years.

Building characteristics
Total units3
Floors2
Year built1925
Gross area2,684 sq ft
Building class
Tax abatementNone
Issue trend & model projection

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

Multiple entrances & addresses

Included addresses

All street addresses that share this building's BBL and are covered by this report.

3900 Neptune Ave, New York, NY 11224
3902 Neptune Ave, New York, NY 11224
3900 Garage Neptune Ave, New York, NY 11224
Who's behind the building

3900 Neptune 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
Rachel Harfenes
Address
4724 Beach 47Th Street 2
Brooklyn, NY 11224
Landlord portfolio

Other properties owned.

Portfolio data hidden

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What residents say

Reviews from 3900 Neptune Avenue tenants

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On the map

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