No HPD housing-court cases on record for this building.
Bedbug history
No bedbugs reported
The owner filed 3 annual bedbug reports and reported no infested units. Filing with zero infestations is the compliant, reassuring case.
DOB building violations
2
Active
2
On record
1
Active, last 3 yrs
ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2025-11-14
VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION
ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED2009-12-31
City debt & tax-lien sale
Not on the city's tax-lien sale list (2019–2025). The owner has not fallen far enough behind on property tax or water charges to be flagged for a lien sale.
HPD housing-maintenance violations
8
Open now
21
On record
2
Open Class C
3
Open Class B
3
Open Class A
Class C is immediately hazardous, Class B is hazardous, Class A is non-hazardous. A violation stays open until HPD certifies the repair, so some open items may already be fixed.
CLASS C · IMMEDIATELY HAZARDOUSApt 1RIssued 2026-04-24
§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES IN THE ENTRANCE LOCATED AT APT 1R, 1st STORY
Status: Notice issued, not yet certified
CLASS C · IMMEDIATELY HAZARDOUSApt 1LIssued 2025-12-29
§ 27-2044, 2041.1 HMC: §238 MDL and 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING THE DOORS THAT IS MISSING OR DEFECTIVE HINGES AT DOOR IN THE ENTRANCE LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM WEST AT NORTH
Status: Notice issued, not yet certified
CLASS B · HAZARDOUSApt 1LIssued 2025-12-29
§ 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM WEST AT NORTH
Status: Notice issued, not yet certified
CLASS B · HAZARDOUSApt 1LIssued 2025-12-29
§ 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM WEST AT NORTH
Status: Notice issued, not yet certified
The building
1931
Built
3
Floors
6
Residential units
Walk-up apartments
Type
311 complaints from tenants
8
All time
7
Last 12 months
Heat/Hot Water8
Heat/Hot WaterApartment Only2026-04-14 · closed
Heat/Hot WaterApartment Only2026-02-07 · closed
Heat/Hot WaterApartment Only2026-02-02 · closed
Complaints record what a tenant reported, not a finding by the city. "Closed" often means the inspector could not gain access.
Rent regulation
Likely rent-stabilized
On the NYC DHCR 2024 registered rent-stabilized building list. This official list records the building, not a per-year unit count.
No public data says which specific apartment is stabilized.
Registration counts apply to the building, not to unit numbers. To confirm your own apartment, request your rent history from New York State Homes and Community Renewal — it is free and takes a few weeks.
No DOB/ECB violations on record for this building.
Evictions
No executed evictions on record for this building.
Concern level3 of 4
High
012 open class-C HPD violations (immediately hazardous) — about 1 per 3 apartments
022 of those issued in the last 3 years
032 active DOB violation(s)
How this is set: open hazardous violations measured against the building's size, then raised by strong distress signals — HPD's enforcement program, court harassment findings, recent evictions, unpaid DOB fines, open housing-court cases, and a sold tax lien. Neighborhood noise and crime are not part of it. It describes the public record, not the condition of any one apartment, and a quiet record is not proof of a good building.
Neighborhood crime
Much lower than averagevs. NYC apartment blocks
63
NYPD reports · last 12 mo
5
≈ per month
Felony23
Misdemeanor26
Violation14
NYPD complaints reported within about 1,000 ft (a few blocks) in the last year, by severity. This reflects what gets reported and where police are active as much as actual safety, and busier, denser, higher-foot-traffic blocks log more. Locations are approximate — the NYPD shifts each report to the nearest corner for privacy — so read this as rough context, not a safety score.
Landlord and related buildings
Registered owner
KOSTRZEWSKI REVOCABLE TRUST
Head officer
SYLVIA DRUZYNSKI
Managing agent
SYLVIA DRUZYNSKI
No other buildings found sharing this building's registered contact.
This building and the landlord's others
This building
Ownership & money
Speculation watch
·Changed hands in 2026 — new owners sometimes move to raise rents or deregulate units
A pattern, not a prediction — many transfers are ordinary or between related companies.
2
Recorded sales
0
Mortgages / refinances
Last recorded sale2026-02-05 · $560,000
Sale2026-02-05$560,000
SYLVIA DRUZYNSKI, THE KOSTRZEWSKI REVOCABLE TRUST → 638 HUMBOLDT STREET LLC
Sale2002-09-25no recorded price
KOSTRZEWSKI, STANLEY → KOSTRZEWSKI REVOCABLE TRUST
From ACRIS recorded documents. Amounts are often $0 or nominal for transfers between related parties, and LLCs can obscure who is really involved — treat this as public-record context, not a valuation.
Neighborhood noise
About averagevs. NYC apartment blocks
394
Noise reports · last 12 mo
33
≈ per month
46
% from neighbors
Residential181
Unspecified81
Street/Sidewalk61
Commercial50
Vehicle11
Park10
311 noise complaints within about 1,000 ft (a few blocks) in the last year. Most reports here are about outdoor noise (mostly residential) — street life and traffic more than neighbors. This counts how often people call 311, which tracks how densely populated and busy an area is as much as how loud it is — it is not a sound measurement.
