648 73rd Street
648 73rd Street in Bay Ridge, Brooklyn, has 27 open HPD violations, 1 of them class C, and 5 of 6 units are rent-stabilized, as of Oct 25, 2026. StreetSpy grade: D (50/100).
Multi-family walk-up · 6 units · Built 1931
StreetSpy grade: D (Poor, 50/100)
- 1 immediately hazardous violation open (the class that covers no heat, pests, lead paint and similar).
- 1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a.
- The owner has 5 buildings on record; 4 graded D or F.
- 5 of 6 units are rent-stabilized.
More open violations per unit than 8 in 10 Brooklyn buildings this size.
- Repairs: High (27 open, 1 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: High (4 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)
27 open violations: 1 class C (immediately hazardous), 18 class B, 8 class A. 1 issued in the last 12 months. 51 on record. Oldest open violation issued 1990-02-27. Newest violation issued 2026-05-01.
HPD recorded no violation closed here in the last 12 months.
1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.
- 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 1 STY PUBLIC HALL & ON BOILER ROOM DOOR., issued 1990-02-27. HPD violation 1076559
- Class B: Door, lock or intercom defect (hallway). HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE LATCH AT VESTIBULE ENTRANCE DOOR AT PUBLIC HALL, 1st STORY, issued 2025-04-18. HPD violation 17829635
- Class B: Leak or water damage. D26-10.01 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF CONCEALED LEAK CLG 3 STY PUB HALL., issued 2008-06-12. HPD violation 1076545
- Class B: Self-closing door not working (roof). D26-10.01, 10.05 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS BULKHEAD TO ROOF R47., issued 2008-06-12. HPD violation 1076552
- Class B: Lighting defect (entrance). D26-19.07 ADM CODE PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING FIXTURES PRESENT LIGHTS NOTH ON NIGHT INSPECTION., issued 2008-06-12. HPD violation 1076543
- Class B: Damaged plaster or paint (basement). D26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE HOLES IN FIRE RETARDING CEILING CELLAR THROUGHOUT., issued 2008-06-12. HPD violation 1076539
- Class B: Self-closing door not working (roof). D26-10.01, 10.05 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS BULKHEAD TO ROOF R38., issued 2008-06-12. HPD violation 1076550
- Class B: Lighting defect (hallway). D26-19.05 ADM CODE PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS INCANDESCENT OR EQUIVALENT ILLUMINATION 3 STY PUBLIC HALL., issued 2008-06-12. HPD violation 1076547
311 housing complaints
0 in the last 12 months, 3 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: No bedbug filing on record for this year
- 2024: Owner reported 0 infested units
- 2023: No bedbug filing on record for this year
- 2022: No bedbug filing on record for this year
- 2021: No bedbug filing on record for this year
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
5 of 6 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).
Owner and management
Owner: MICHAEL MAZZA. This owner has 5 buildings on record, 4 graded D or F. See the full portfolio.
Last HPD registration Jul 31, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 3059210028, HPD building ID 170323. HPD Online, ACRIS, DOB BIS.
Nearest subway
- 77 St (R), 7 min walk
- Bay Ridge Av (R), 10 min walk
- 8 Av (N), 11 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 27 open (1 class C, 18 class B, 8 class A). 1 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 | 4 open DOB violations, all 4 Local Law violations issued before 2000 | −5 |
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.