637 Nostrand Avenue

637 Nostrand Avenue in Crown Heights, Brooklyn, has 143 open HPD violations, 38 of them class C, and 11 of 18 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: F (38/100).

Mixed residential & commercial · 18 units · Built 1910

StreetSpy grade: F (Severe, 38/100)

• 38 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 19 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The head officer on this registration is named on 11 buildings' registrations; 9 graded D or F.
• 11 of 18 units are rent-stabilized; 21 on the 2007 tax bill.

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

• Repairs: High (143 open, 38 class C), records as of Oct 26, 2026
• Heat and hot water: 2 complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 28, 2026
• Safety: Medium (4 open DOB violations), records as of Oct 26, 2026
• Registration: Through Sep 1, 2027, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

143 open violations: 38 class C (immediately hazardous), 90 class B, 15 class A. 29 issued in the last 12 months. 329 on record. Oldest open violation issued 2016-07-05. Newest violation issued 2026-09-01.

2 closed in the last 90 days. Median 110 days from issue to close for the 19 violations closed in the last 12 months.

19 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: Roaches, throughout the apartment, 2nd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 2A, 2nd STORY, 2nd APARTMENT FROM SOUTH AT WEST (apt 2A), issued 2026-09-01. HPD violation 19179188
• Class C: Roaches, throughout the apartment, 1st floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 1E, 1st STORY, 1st APARTMENT FROM NORTH AT EAST (apt 1E), issued 2026-04-27. HPD violation 18808787
• Class C: Mice, throughout the apartment, 2nd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 2D, 2nd STORY, 2nd APARTMENT FROM NORTH AT EAST (apt 2D), issued 2026-04-27. HPD violation 18808794
• Class C: Roaches, throughout the apartment, 2nd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 2D, 2nd STORY, 2nd APARTMENT FROM NORTH AT EAST (apt 2D), issued 2026-04-27. HPD violation 18808793
• Class C: Mice, throughout the apartment, 1st floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 1E, 1st STORY, 1st APARTMENT FROM NORTH AT EAST (apt 1E), issued 2026-04-27. HPD violation 18808786
• Class C: Broken window or sash, 1st window from the east, kitchen, 2nd floor. HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE GLASS PANE AT UPPER SASH 1ST WINDOW FROM EAST AT SOUTH, IN THE KITCHEN LOCATED AT APT 2D, 2nd STORY, 2nd APARTMENT FROM NORTH AT EAST (apt 2D), issued 2025-11-13. HPD violation 18362669
• Class C: Broken window or sash, 1st window from the east, kitchen, 2nd floor. HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE COUNTER BALANCE AT LOWER SASH 1ST WINDOW FROM EAST AT SOUTH, IN THE KITCHEN LOCATED AT APT 2D, 2nd STORY, 2nd APARTMENT FROM NORTH AT EAST (apt 2D), issued 2025-11-13. HPD violation 18362670
• Class C: Roaches, throughout the apartment, 2nd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 2D, 2nd STORY, 2nd APARTMENT FROM NORTH AT EAST (apt 2D), issued 2025-09-26. HPD violation 18250925

311 housing complaints

7 in the last 12 months, 165 in 5 years. Most common: Unsanitary Condition (5), Heat/Hot Water (2).

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: No bedbug filing on record for this year
• 2024: Owner reported 0 infested units
• 2023: No bedbug filing on record for this year
• 2022: Owner reported 2 infested, 2 treated, 0 re-infested
• 2021: Owner reported 9 infested, 9 treated, 2 re-infested

Buildings department (DOB)

4 open DOB violations, all 4 Local Law violations issued before 2000. 4 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

11 of 18 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: 11 in 2024, 21 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: OTA 701 ST MARKS LLC. Head officer: ELLEN GUCCIONE. Managing agent: Diamond Mine Real Estate LLC. This owner has 11 buildings on record, 9 graded D or F. See the full portfolio.

Last HPD registration Jul 1, 2026, valid through Sep 1, 2027.

Tax lot and city IDs

BBL 3012200001, HPD building ID 346893. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Nostrand Av (A, C), 7 min walk
• Nostrand Av (3), 8 min walk
• Park Pl (S), 8 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 2026-10-28.