100 East 21st Street
Top insights
- 7 open hazardous (Class C) violations
- More HPD complaints than the neighborhood average (81 vs ~31)
- Built in 1941 (city records)
- Rent-stabilized: 84 of 84 units
About this building
City records list 1941 as the year built — newer than 86% of the 492 buildings we cover in ZIP 11226, and the newest of the 10 buildings we cover on this block. The building’s floor space is 4.3 times the size of its lot: 86,118 sq ft of building on a 20,000 sq ft lot. 84 apartments — more than 90% of the 491 residential buildings we cover in ZIP 11226 have.
Comparisons with neighboring buildings, as of October 13, 2026.
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
100 East 21st Street
Open in Google Street View ↗
- City records show 34 open HPD violations, 7 immediately hazardous (Class C) at this building. Ask which are still unresolved in the unit and the landlord’s timeline to clear them.
- The oldest open violation on record dates to 2006 — why has it stayed open this long, and is it in or near this unit?
- DHCR’s most recent registration lists 84 rent-stabilized units here. Ask whether this specific unit is one of them, and ask the landlord for its legal regulated rent and lease history.
- 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 East 21st Street sits in Brooklyn, ZIP 11226. The closest subway is Church Av (B,Q) (3-minute walk), served by the B and Q lines.
Building Condition
Oldest open violation: November 2006 · Most recent: September 2026. 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.
- 2026-09-18 "§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE REGLAZED THE PORCELAIN PAINT AT BATHTUB…"
- 2026-09-18 "§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT EAST WALL IN THE BATHROOM LOCA…"
- 2026-09-18 "§ 27-2005 ADM CODE REPLACE WITH NEW THE MISSING STRICKER PLATE AT, ENTRANCE DOOR FRAME , SOUTH WALL, IN THE FOYER LOCATE…"
- 2026-09-18 "§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT AT CEILING IN THE KITCHEN LOCAT…"
- 2026-09-18 "§ 27-2043.1 HMC INSTALL THE MISSING OR REPAIR/REPLACE THE DEFECTIVE WINDOW GUARD(S) IN ACCORDANCE WITH THE SPECIFICATION…"
- 2026-09-18
- 2026-07-22
- Class C · 7 open · penalty 105 · (15/ea)
- Class B · 20 open · penalty 100 · (5/ea)
- Class A · 7 open · penalty 7 · (1/ea)
- 2026-08-21 · Apt 319 · EMERGENCY · PLUMBING
- 2026-08-21 · Apt 319 · NON EMERGENCY · PLUMBING
- 2026-08-13 · Apt 319 · NON EMERGENCY · PLUMBING
- 2026-01-23
- 2025-06-23
- 2024-07-03
- 2024-07-03
- 2024-02-14
- 2020-09-02 "FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION"
- 1993-01-26
1 open lead-paint hazard violation on record (most recent 2026). These are HPD violations recorded against the building — not a test of any specific apartment.
24 earlier hazards cited and remediated.
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 (this building: built 1941). 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.
Also on record: 2 procedural §27-2056 violations (failure to file required lead paperwork, most recent 2026) — a records failure, not evidence of a lead hazard.
The Building
Neighborhood & Environment
~1 block 300m
~2-3 blocks
- PETIT LARCENY: 176
- HARRASSMENT 2: 159
- ASSAULT 3 & RELATED OFFENSES: 118
- CRIMINAL MISCHIEF & RELATED OF: 62
- VEHICLE AND TRAFFIC LAWS: 62
- HEAT/HOT WATER: 889
- Noise - Residential: 715
- UNSANITARY CONDITION: 417
- PLUMBING: 320
- PAINT/PLASTER: 299
- 841 FLATBUSH AVE
- 845 FLATBUSH AVENUE
- 829 FLATBUSH AVENUE
- Success Academy Charter School - Flatbush
- Norma Adams Clemons Academy
- P.S. 249 The Caton
- Academy for College Preparation and Career Explora
- Science, Technology and Research Early College Hig
- Fahari Academy Charter School
- Erasmus Campus - Science/Math
- Erasmus Campus - Humanities
- Erasmus Campus - Business/Tec
- Church Av
- Parkside Av
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Norma Adams Clemons Academy
- Umma Park
- Flatbush Learning Center
- Flatbush Library
- Immigrant Adult Support Center
- Flatbush African Burial Ground
Internet providers serving this area
Internet providers available in this area — including fiber:
- Optimum Cable Fiber Up to 8,000 Mbps down · 8,000 Mbps up
- Verizon Fiber Up to 2,300 Mbps down · 2,300 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.
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