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Free Building Background Check

139 Dupont Street

BROOKLYN, NY 11222 BBL 3024880053 6 units · 3 floors · 1930

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

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Rent & eviction protection

Is 139 Dupont Street 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 1930
6 or more units
6 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 139 Dupont Street'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
15th percentile

Out of 2348 buildings in this neighborhood, 352 have a higher predicted risk.

RiskiestSafest
Predicted violation outcome
37.9%
No serious
violations
50.8%
Some violations
(1–9)
11.3%
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.

Complaint rate, landlord's portfolio

Average complaint rate per building across everything this landlord owns. High rates signal systemic neglect.

Emergency violations, property manager's portfolio

Emergency violations across buildings under this property manager.

Building assessed value

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

Building characteristics
Total units6
Floors3
Year built1930
Gross area4,125 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

139 Dupont Street'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
Sonny & Associates LLC
Address
8 West 36 Street 8th Fl
New York, NY 10018
Landlord portfolio

Other properties owned.

Portfolio data hidden

We found 1 other property owned by this landlord. Unlock the report to see their addresses and risk grades.

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What residents say

Reviews from 139 Dupont Street 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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