639 Union Street

639 Union Street in Carroll Gardens, Brooklyn, has 75 open HPD violations, 15 of them class C, and 5 of 8 units are rent-stabilized, as of Oct 24, 2026. StreetSpy grade: D (50/100).

Multi-family walk-up · 8 units · Built 1931

StreetSpy grade: D (Poor, 50/100)

• 15 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 3 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The head officer on this registration is named on 7 buildings' registrations; 7 graded D or F.
• 5 of 8 units are rent-stabilized; 8 on the 2007 tax bill.

More open violations per unit than 9 in 10 Brooklyn buildings this size.

• Repairs: High (75 open, 15 class C), records as of Oct 24, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 23, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 26, 2026
• Safety: High (6 open DOB violations), records as of Oct 23, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

75 open violations: 15 class C (immediately hazardous), 39 class B, 21 class A. 4 issued in the last 12 months. 211 on record. Oldest open violation issued 2006-12-29. Newest violation issued 2026-07-21.

1 closed in the last 90 days. Median 148 days from issue to close for the 2 violations closed in the last 12 months.

3 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: Self-closing door not working, 1st floor. , 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 (apt 1L), issued 2026-07-21. HPD violation 19084278
• Class C: Self-closing door not working (basement). , 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 CELLAR ENTRANCE DOOR AT FRONT YARD, issued 2023-07-10. HPD violation 16094048
• Class C: Self-closing door not working, north wall. PROVIDE APPROVED ONE-HOUR FIRE RESISTANCE RATED SELF-CLOSING DOOR AT ALL OPENINGS TO PUBLIC HALL OTHER THAN APT MAIN ENTRANCE DOOR FROM VESTIBULE DOOR, AT NORTH WALL, AT PUBLIC HALL, 1st STORY, issued 2023-06-16. HPD violation 16038697
• Class C: Roaches, 3rd floor. ADMIN. CODE: ABATE THE NUISANCE CONSISTING OF ROACHES LOCATED AT APT 3L, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH (apt 3L), issued 2019-01-30. HPD violation 12879099
• Class C: Fire escape defect, 4th room from the north, 3rd floor. & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF KEY OPERATED LOCK INSTALLED ON THE DOOR OF THE ROOM LEADING TO THE FIRE ESCAPE IN THE 4th ROOM FROM NORTH LOCATED AT APT 3L, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH (apt 3L), issued 2016-02-19. HPD violation 11118192
• Class C: No hot water, throughout the apartment, 3rd floor. PROVIDE HOT WATER AT ALL HOT WATER FIXTURES IN THE ENTIRE APARTMENT LOCATED AT APT 3R, 3rd STORY, 2nd APARTMENT FROM WEST AT NORTH (apt 3R), issued 2016-02-19. HPD violation 11118208
• Class C: Lead paint hazard, 1st closet from the south, west wall, kitchen, 5th 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 SOUTH AT WEST WALL DOOR FRAME, 1st DOOR FRAME FROM EAST AT SOUTH WALL, 1st WINDOW FRAME FROM WEST AT NORTH WALL, 1st WINDOW FRAME FROM EAST AT SOUTH WALL IN THE KITCHEN LOCATED AT APT 3R, 5th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 3R), issued 2009-05-26. HPD violation 7884304
• Class C: Lead paint hazard, 1st door from the west, north wall, 3rd room from the north, 5th 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 FROM WEST AT NORTH WALL, 1st DOOR FRAME FROM WEST AT NORTH WALL, 1st DOOR FRAME FROM EAST AT SOUTH WALL IN THE 3rd ROOM FROM NORTH LOCATED AT APT 3R, 5th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 3R), issued 2009-05-26. HPD violation 7884303

311 housing complaints

0 in the last 12 months, 12 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: Owner reported 0 infested units
• 2025: No bedbug filing on record for this year
• 2024: No bedbug filing on record for this year
• 2023: Owner reported 0 infested units
• 2022: No bedbug filing on record for this year
• 2021: Owner reported 0 infested units

Buildings department (DOB)

6 open DOB violations, all 6 Local Law violations issued before 2000. 6 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

5 of 8 units rent-stabilized as of 2024. Stabilized renewals: 0% for one year and 0% for two years under RGB Order #58 (Oct 1, 2026 to Sep 30, 2027).

Rent-stabilized units on city tax bills: 5 in 2024, 8 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: 639 UNION STREET, LLC. Head officer: ERIC NACHIMOVSKY. Managing agent: myriam nachimovsky. This owner has 7 buildings on record, 7 graded D or F. See the full portfolio.

Last HPD registration Oct 6, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3004340054, HPD building ID 383777. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Union St (R), 1 min walk
• Atlantic Av-Barclays Ctr (D, N, R), 9 min walk
• Bergen St (2, 3), 10 min walk

How the grade is calculated

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 2026-10-27.