21 Montrose Avenue
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
- More open HPD violations than ~66% of buildings in this ZIP (9 open)
- Fewer HPD complaints than the neighborhood average (1 vs ~3)
- Built in 2008 (city records)
- Rent-stabilized: 34 units registered
About this building
City records list 2008 as the year built — newer than 81% of the 890 buildings we cover in ZIP 11206. At 7 floors, the tallest of the 12 buildings we cover on this block. 30 apartments — the most of any building we cover on this block. The building’s floor space is 3.9 times the size of its lot: 29,250 sq ft of building on a 7,500 sq ft lot.
Comparisons with neighboring buildings, as of November 3, 2026.
A difference between the DHCR rent-stabilized count and the PLUTO total is common and does not, on its own, indicate a violation: units can leave rent stabilization legally, the two datasets count units differently, some units may be non-residential, and a registration can be filed incompletely. To check your own apartment, see how to request your rent history from DHCR.
21 Montrose Avenue
Open in Google Street View ↗
- City records show 9 open HPD violations under 25 Montrose 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 2021 — why has it stayed open this long, and is it in or near this unit?
- DHCR’s most recent registration lists 34 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: Properly repair the source and abate the evidence of a water leak at ceiling in the kitchen.
21 Montrose Avenue sits in Brooklyn, ZIP 11206. The closest subway is Broadway (G) (2-minute walk), served by the G line.
Building Condition
Oldest open violation: October 2021 · 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.
- 2026-09-12
- 2026-05-08
- 2024-12-30
- 2024-12-30
- 2024-12-30
- Class B · 1 open · penalty 5 · (5/ea)
- Class A · 8 open · penalty 8 · (1/ea)
- 2025-12-31 · Apt 204 · EMERGENCY · HEAT/HOT WATER
- 2023-05-02 "FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4"
- 2022-12-01 "FAILURE TO DISPLAY ENERGY EFFICIENCY SCORE AND ENERGY EFFICIENCY GRADE AS PER ADCODE SEC. 28-309.12.3"
- 2022-06-01 "FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4"
No HPD lead-paint violations on record. Built 2008, after the 1978 federal ban on lead paint in residential use. Owners must still address any lead hazard that is later identified.
The Building
Neighborhood & Environment
~1 block 300m
~2-3 blocks
- PETIT LARCENY: 163
- SEX CRIMES: 79
- HARRASSMENT 2: 76
- GRAND LARCENY: 43
- ASSAULT 3 & RELATED OFFENSES: 32
- Noise - Residential: 83
- Dirty Condition: 74
- Illegal Parking: 59
- Noise - Street/Sidewalk: 37
- General Construction/Plumbing: 31
- 10 MESEROLE ST
- 225 UNION AVE
- 225 UNION AVE
- P.S. 250 George H. Lindsay
- Beginning with Children Charter School II
- P.S. 319
- I.S. 318 Eugenio Maria De Hostos
- Beginning with Children Charter School II
- Juan Morel Campos Secondary School
- Juan Morel Campos Secondary School
- Brooklyn Latin School, The
- The Williamsburg High School of Art and Technology
- Broadway
- Hewes St
- Lorimer St
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- Grade A
- De Hostos Playground
- Beth Rachel School For Girls 60
- Juan Morel Campos Secondary School
- Harmony Triangle
- Lyons Community School
- Hooper Grove
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
- Spectrum Cable 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.
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