638 Warren Street
638 Warren Street in Park Slope, Brooklyn, has 129 open HPD violations, 15 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: F (49/100).
Co-op (HDFC) · Multi-family walk-up · 8 units · Built 1920
A limited-equity co-op held by a Housing Development Fund Corporation: the residents own shares, so a rental here is a sublet that usually needs board approval, and HDFC co-ops often limit sublets and resale prices. Co-op units are not rent-stabilized. How HDFCs are ranked
StreetSpy grade: F (Severe, 49/100)
- 161.3 open HPD violations per 10 units, about 16 per apartment. The grade is F for that alone.
- 15 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
- 2 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
- A co-op: renting here is a sublet, usually with board approval and a time limit; units are not rent-stabilized.
- Repairs: Grade capped at F (129 open, 15 class C), records as of Oct 25, 2026
- Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
- Pests: Clear (Owner reported none, 3 yr), records as of Oct 27, 2026
- Safety: Clear (No open DOB violations), records as of Oct 23, 2026
- Registration: Renewal not yet in city data, records as of Oct 3, 2026
Housing code violations (HPD)
129 open violations: 15 class C (immediately hazardous), 85 class B, 29 class A. 0 issued in the last 12 months. 141 on record. Oldest open violation issued 1991-12-17. Newest violation issued 2025-06-11.
0 closed in the last 90 days. Median 414 days from issue to close for the 2 violations closed in the last 12 months.
2 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.
- Class C: Leak or water damage, ceiling, bathroom, 1st floor. , 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING AND NORTH WALL IN THE BATHROOM LOCATED AT APT 1R, 1st STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 1R), issued 2018-10-04. HPD violation 12618901
- Class C: No heat / heating defect (hallway). POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM MISSING AT PUBLIC HALL, 1st STORY, issued 2016-08-08. HPD violation 11340832
- Class C: Lead paint hazard, 1st window frame from the south, west wall, 4th room from the north, 2nd floor. - CORRECT THE LEAD-BASED PAINT HAZARD - PAINT THAT TESTED POSITIVE FOR LEAD CONTENT AND THAT IS PEELING OR ON A DETERIORATED SUBSURFACE - USING WORK PRACTICES SET FORTH IN 28 RCNY ?11-06(B)(2) BASEBOARD AT EAST WALL, 1st DOOR FRAME FROM EAST AT SOUTH WALL, 1st WINDOW FRAME FROM SOUTH AT WEST WALL IN THE 4th ROOM FROM NORTH LOCATED AT APT 2R, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2R), issued 2015-09-04. HPD violation 10848059
- Class C: Lead paint hazard, 1st window frame from the south, west wall, 2nd room from the north, 2nd floor. - CORRECT THE LEAD-BASED PAINT HAZARD - PAINT THAT TESTED POSITIVE FOR LEAD CONTENT AND THAT IS PEELING OR ON A DETERIORATED SUBSURFACE - USING WORK PRACTICES SET FORTH IN 28 RCNY ?11-06(B)(2) 1st DOOR FRAME FROM EAST AT SOUTH WALL, 1st WINDOW FRAME FROM SOUTH AT WEST WALL IN THE 2nd ROOM FROM NORTH LOCATED AT APT 2R, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2R), issued 2015-09-04. HPD violation 10848055
- Class C: Lead paint hazard, 1st closet from the north, east wall, bathroom, 2nd floor. - CORRECT THE LEAD-BASED PAINT HAZARD - PAINT THAT TESTED POSITIVE FOR LEAD CONTENT AND THAT IS PEELING OR ON A DETERIORATED SUBSURFACE - USING WORK PRACTICES SET FORTH IN 28 RCNY ?11-06(B)(2) 1st CLOSET FROM NORTH AT EAST WALL DOOR FRAME, 1st WINDOW FRAME FROM SOUTH AT WEST WALL IN THE BATHROOM LOCATED AT APT 2R, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2R), issued 2015-09-04. HPD violation 10848057
- Class C: Lead paint hazard, 1st closet from the north, east wall, 2nd floor. - CORRECT THE LEAD-BASED PAINT HAZARD - PAINT THAT TESTED POSITIVE FOR LEAD CONTENT AND THAT IS PEELING OR ON A DETERIORATED SUBSURFACE - USING WORK PRACTICES SET FORTH IN 28 RCNY ?11-06(B)(2) 1st CLOSET FROM NORTH AT EAST WALL DOOR, 1st CLOSET FROM NORTH AT EAST WALL DOOR FRAME IN THE PRIVATE HALLWAY LOCATED AT APT 2R, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2R), issued 2015-09-04. HPD violation 10848058
- Class C: Lead paint hazard, 1st window frame from the west, north wall, 1st room from the north, 2nd floor. - CORRECT THE LEAD-BASED PAINT HAZARD - PAINT THAT TESTED POSITIVE FOR LEAD CONTENT AND THAT IS PEELING OR ON A DETERIORATED SUBSURFACE - USING WORK PRACTICES SET FORTH IN 28 RCNY ?11-06(B)(2) BASEBOARD AT NORTH WALL, 2nd DOOR FRAME FROM EAST AT SOUTH WALL, 1st FIREPLACE FROM SOUTH AT WEST WALL, NORTH WALL, SOUTH WALL, 1st WINDOW FRAME FROM WEST AT NORTH WALL, 2nd WINDOW FRAME FROM WEST AT NORTH WALL, 3rd WINDOW FRAME FROM WEST AT NORTH WALL IN THE 1st ROOM FROM NORTH LOCATED AT APT 2R, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2R), issued 2015-09-04. HPD violation 10848053
- Class C: Lead paint hazard, 1st closet from the north, east wall, kitchen, 2nd floor. - CORRECT THE LEAD-BASED PAINT HAZARD - PAINT THAT TESTED POSITIVE FOR LEAD CONTENT AND THAT IS PEELING OR ON A DETERIORATED SUBSURFACE - USING WORK PRACTICES SET FORTH IN 28 RCNY ?11-06(B)(2) 1st CLOSET FROM NORTH AT EAST WALL DOOR FRAME, EAST WALL, 1st WALL CABINET FROM NORTH AT EAST WALL, 1st WINDOW FRAME FROM EAST AT SOUTH WALL, 2nd WINDOW FRAME FROM EAST AT SOUTH WALL IN THE KITCHEN LOCATED AT APT 2R, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2R), issued 2015-09-04. HPD violation 10848054
311 housing complaints
0 in the last 12 months, 0 in 5 years.
Bedbugs
The owner reported 0 infested units in the last 3 years of filings. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.
- 2026: No bedbug filing on record for this year
- 2025: Owner reported 0 infested units
- 2024: No bedbug filing on record for this year
- 2023: No bedbug filing on record for this year
- 2022: Owner reported 0 infested units
- 2021: No bedbug filing on record for this year
Buildings department (DOB)
No open DOB violations. 0 DOB violations on record. Check on DOB BIS.
Evictions and housing court
0 executed evictions in the last 3 years (0 on record). 0 open HPD cases; 0 harassment findings.
Rent stabilization
No rent-stabilized units on the tax bill.
Owner and management
Owner: 638 WARREN STREET HDFC. Head officer: KRISTEN SILVERMAN. Managing agent: STU LIAO. See the full portfolio.
Last HPD registration Jul 23, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 3009370011, HPD building ID 388158. HPD Online, ACRIS, DOB BIS.
Nearest subway
- Atlantic Av-Barclays Ctr (D, N, R), 4 min walk
- Bergen St (2, 3), 5 min walk
- Atlantic Av-Barclays Ctr (2, 3, 4, 5), 5 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 129 open (15 class C, 85 class B, 29 class A). 2 rent-impairing | −45 |
| 311 housing complaints (12 mo) | None | 0 |
| Bedbug reports (3 yr) | None reported | 0 |
| Executed evictions (3 yr) | None | 0 |
| Housing litigation | No open cases | 0 |
| Open DOB violations | None | 0 |
| Density cap | 161.3 per 10 units (about 16 per apartment). Grade capped at F: 100 or more open HPD violations per 10 units. | −6 |
Sources: NYC HPD Housing Maintenance Code Violations, NYC 311 Service Requests, NYC HPD Bedbug Reporting, NYC Marshal Evictions (DOI), NYC HPD Housing Litigations, NYC DOB Violations, NYC DOF tax bills (via JustFix Who Owns What portfolio API, v2), NYC HPD Property Registration. Methodology. Report generated 2026-10-28.