100 West 121st Street
Class B
Class C
12 months to Aug 2026
rent-stabilized with
DHCR (most recent year)
units (PLUTO)
12 months through March 2026
rent
min walk
(311 complaints)
errands grade
nearby
Top insights
- 1 open hazardous (Class C) violation
- Built before 1939 (city records: 1907) — likely subject to NYC lead-paint rules
About this building
21 apartments — the most of any of the 42 buildings we cover on this block. Standing since 1907 inside the Mount Morris Park Historic District. The building’s floor space is 4.6 times the size of its lot: 34,689 sq ft of building on a 7,569 sq ft lot.
Comparisons with neighboring buildings, as of November 3, 2026.
100 West 121st Street
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- City records show 7 open HPD violations, 1 immediately hazardous (Class C) under 207 Lenox 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 2011 — 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: Install the missing or repair/replace the defective window guard(s) in accordance….
- 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.
100 West 121st Street sits in Manhattan, ZIP 10027. The closest subway is 125 St (2,3) (4-minute walk), served by the 2 and 3 lines.
Building Condition
Oldest open violation: November 2011 · Most recent: May 2014. 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.
- 2014-04-28
- 2014-04-28
- 2014-04-28
- 2014-04-28
- 2014-04-28
- Class C · 1 open · penalty 15 · (15/ea)
- Class B · 5 open · penalty 25 · (5/ea)
- Class A · 1 open · penalty 1 · (1/ea)
- 2018-05-31 "FAILED TO FILE FISP CYCLE 8A TECHNICAL REPORT BY 02/21/2017"
- 2017-01-03 "VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2015 CAT 1 INSP/TST"
- 2014-05-19
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 1907. 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
- HARRASSMENT 2: 85
- PETIT LARCENY: 73
- ASSAULT 3 & RELATED OFFENSES: 70
- DANGEROUS DRUGS: 62
- CRIMINAL MISCHIEF & RELATED OF: 45
- Illegal Parking: 190
- HEAT/HOT WATER: 108
- Noise - Residential: 76
- Noise - Street/Sidewalk: 58
- Snow or Ice: 32
- 217 MALCOLM X BOULEVARD
- 193 MALCOLM X BOULEVARD
- 180 MALCOLM X BLVD
- P.S. 242 - The Young Diplomats Magnet Academy
- P.S. 149 Sojourner Truth
- Success Academy Charter School - Harlem 1
- P.S. 149 Sojourner Truth
- PS 162m
- P.S. 076 A. Philip Randolph
- PS 162m
- P.S. M079 - Horan School
- Democracy Prep Endurance Charter School
- 125 St
- 116 St
- 116 St
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Torkomada, Inc.
- P.s. 242 - The Young Diplomats Magnet Academy
- Gotham Arts Exchange, Inc.
- Success Academy Charter School - Harlem 1
- A Philip Randolph Square
- Center For Accelerated Learning
Internet providers serving this area
Internet providers available in this area — including fiber:
- Verizon Fiber Up to 2,300 Mbps down · 2,300 Mbps up
- Astound Broadband Cable Up to 1,500 Mbps down · 50 Mbps up
- Spectrum Cable Fiber Up to 1,000 Mbps down · 1,000 Mbps up
How to check internet providers before signing an NYC lease →
Source: FCC Broadband Data Collection (NY, rev. May 2026). Wired broadband only — cable + fiber. DSL, satellite, and fixed-wireless not included. Block-level data; actual availability may vary by building.
Market & Availability
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