431 West 121st Street
Class B
Class C
12 months to Aug 2026
rent-stabilized with
DHCR (most recent year)
units (PLUTO)
12 months through June 2026
rent
min walk
(311 complaints)
errands grade
nearby
Top insights
- More open HPD violations than ~88% of buildings in this ZIP (47 open)
- 8 open hazardous (Class C) violations
- Built before 1939 (city records: 1920) — likely subject to NYC lead-paint rules
About this building
City records list 1920 as the year built — newer than 78% of the 1,388 buildings we cover in ZIP 10027. The building’s floor space is 4.7 times the size of its lot: 17,034 sq ft of building on a 3,618 sq ft lot.
Comparisons with neighboring buildings, as of November 7, 2026.
431 West 121st Street
Open in Google Street View ↗
- City records show 47 open HPD violations, 8 immediately hazardous (Class C) under 1241 Amsterdam Avenue — the address HPD files this building’s records under, not the address on this page. Ask which are still unresolved in the unit and the landlord’s timeline to clear them.
- The oldest open violation on record dates to 2007 — why has it stayed open this long, and is it in or near this unit?
- We found no DHCR rent-stabilization unit count for this building. That is not the same as the building being market-rate — a registration can be on file with no unit figure, or not have been filed at all. Ask the landlord directly whether the unit is rent-stabilized, and request your own rent history from DHCR.
- Confirm the condition behind the most recent open violation was actually repaired, not just marked closed: Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling….
- Confirm in person that the immediately-hazardous (Class C) conditions — typically heat, hot water, leaks, mold or pests — are genuinely fixed, not just marked closed.
431 West 121st Street sits in Manhattan, ZIP 10027. The closest subway is 125 St (A,C,B,D) (7-minute walk), served by the A, B, C, and D lines.
Building Condition
Oldest open violation: August 2007 · Most recent: March 2025. HPD marks a violation open until it is certified as corrected, so an old date can mean an unresolved condition or a repair that was never certified.
- 2025-02-25
- 2025-02-25
- 2025-02-25
- 2025-02-25
- 2025-02-25
- Class C · 8 open · penalty 120 · (15/ea)
- Class B · 38 open · penalty 190 · (5/ea)
- Class A · 1 open · penalty 1 · (1/ea)
- 2025-05-19
- 2016-05-04 "FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION"
- 2016-04-20 "FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION"
- 2014-12-17 "FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION"
No HPD lead-paint violations are on record for this building. That means no complaint or inspection was filed — not that the building is lead-free.
Built 1920. Under NYC Local Law 1 (Admin Code §27-2056.5), lead paint is presumed present in common areas and in apartments where a child under 6 resides, in multiple dwellings built before 1960. The presumption stands unless the owner obtained a lead-free or lead-safe exemption from HPD. Those exemption records aren’t published as open data, so we can’t confirm one either way.
The Building
Neighborhood & Environment
~1 block 300m
~2-3 blocks
- PETIT LARCENY: 49
- HARRASSMENT 2: 41
- GRAND LARCENY: 31
- ASSAULT 3 & RELATED OFFENSES: 23
- CRIMINAL MISCHIEF & RELATED OF: 17
- HEAT/HOT WATER: 98
- Traffic Signal Condition: 57
- UNSANITARY CONDITION: 54
- Noise - Residential: 35
- DOOR/WINDOW: 31
- 1225 AMSTERDAM AVE
- 1290 AMSTERDAM AVENUE
- 532 SEMINARY ROW
- P.S. 036 Margaret Douglas
- P.S. 125 Ralph Bunche
- P.S. 180 Hugo Newman
- Columbia Secondary School
- P.S. 180 Hugo Newman
- Powell M.S. for Law & Social Justice
- Columbia Secondary School
- Academy for Social Action
- 125 St
- 116 St-Columbia University
- 125 St
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Kipp Beyond Charter School
- Columbia University
- American Performing Arts Collaborative, Inc.
- New York French-American Charter School
- George Bruce Library
- Union Theological Seminary
Internet & Connectivity
How to check internet providers before signing an NYC lease →
Source: NYC Internet Master Plan (2021) / FCC Census Block lookup. Block-level data; actual availability may vary by building.
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