434 Amsterdam Avenue

434 Amsterdam Avenue in Upper West Side, Manhattan, has 11 open HPD violations, 3 of them class C, and 29 of 37 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: B (82/100).

Mixed residential & commercial · 37 units · Built 1897

StreetSpy grade: B (Good, 82/100)

• 3 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• The owner's bedbug filings report 1 infested unit over the last 3 years.
• No housing complaints to 311 in the last 12 months.
• 29 of 37 units are rent-stabilized; 31 on the 2007 tax bill.

Fewer open violations per unit than 5 in 10 Manhattan buildings this size.

• Repairs: Low (11 open, 3 class C), records as of Oct 26, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Medium (1 infested unit, 3 yr), records as of Oct 28, 2026
• Safety: Clear (No open DOB violations), records as of Oct 26, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

11 open violations: 3 class C (immediately hazardous), 1 class B, 7 class A. 0 issued in the last 12 months. 206 on record. Oldest open violation issued 2006-07-28. Newest violation issued 2024-12-09.

HPD recorded no violation closed here in the last 12 months.

• Class C: Mice, throughout the apartment, cellar. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT CELLAR APT B2, 1st CELLAR APT FROM WEST AT NORTH (apt B2), issued 2024-08-30. HPD violation 17228581
• Class C: Roaches, throughout the apartment, cellar. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT CELLAR APT B2, 1st CELLAR APT FROM WEST AT NORTH (apt B2), issued 2024-08-30. HPD violation 17228582
• Class C: Roaches, throughout the apartment, cellar. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT CELLAR APT B2, 1st CELLAR APT FROM SOUTH AT WEST (apt B2), issued 2024-07-05. HPD violation 17086927
• Class B: Mold, east wall, bathroom, basement. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROXIMATELY 10 SQ FEET AT CEILING AND 5 SQ FEET AT EAST WALL IN THE BATHROOM LOCATED AT BSMT-APT B2, 3rd BSMT-APT FROM WEST AT NORTH (apt B2), issued 2023-06-23. HPD violation 16062410
• Class A: Fire escape defect. AND DEPT. RULES AND REGULATIONS. SCRAPE AND REMOVE RUST SCALES AND PAINT WITH 2 COATS OF PAINT ALL STORIES EAST AND WEST STACKS AT BUILDING FRONT AT FIRE ESCAPE, issued 2024-03-11. HPD violation 16733618
• Class A: Fire escape defect. AND DEPT. RULES AND REGULATIONS. SCRAPE AND REMOVE RUST SCALES AND PAINT WITH 2 COATS OF PAINT AT ALL STORIES EAST AT FIRE ESCAPE, issued 2024-03-11. HPD violation 16733627
• Class A: Damaged plaster or paint, kitchen. M/D LAW FILE PLANS AND APPLICATION AND LEGALIZE THE FOLLOWING ALTERATION OR RESTORE TO THE LEGAL CONDITION EXISTING PRIOR TO THE MAKING OF SAID ALTERATION DROP CEILING IN THE KITCHEN LOCATED AT APT B2, 1st APARTMENT FROM SOUTH AT WEST (apt B2), issued 2012-12-26. HPD violation 9681741
• Class A: Damaged plaster or paint, 1st room from the east. M/D LAW FILE PLANS AND APPLICATION AND LEGALIZE THE FOLLOWING ALTERATION OR RESTORE TO THE LEGAL CONDITION EXISTING PRIOR TO THE MAKING OF SAID ALTERATION DROP CEILING IN THE 1st ROOM FROM EAST LOCATED AT APT B2, 1st APARTMENT FROM SOUTH AT WEST (apt B2), issued 2012-12-26. HPD violation 9681742

311 housing complaints

0 in the last 12 months, 20 in 5 years.

Bedbugs

The owner reported 1 infested unit in the last 3 years. 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: Owner reported 0 infested units
• 2023: Owner reported 1 infested, 0 treated, 0 re-infested
• 2022: No bedbug filing on record for this year
• 2021: Owner reported 0 infested units

Buildings department (DOB)

No open DOB violations. 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

29 of 37 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: 29 in 2024, 31 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: 200 West 81st St Co LLC. Head officer: Willy Wiener. Managing agent: Rialto Management Corp. See the full portfolio.

Last HPD registration Sep 5, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 1012280036, HPD building ID 5928. HPD Online, ACRIS, DOB BIS.

Nearest subway

• 79 St (1), 2 min walk
• 86 St (1), 6 min walk
• 81 St-Museum of Natural History (C, B), 7 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.