634 Classon Avenue
Brooklyn, NY 11238BBL 3-01141-0043Map
Owner of record: Hp Mjm Housing Development Fund Company, INC.,
634 Classon Avenue is a mixed residential and retail building built in 1931 in Brooklyn, 11238. It has 6 residential units across 4 floors. The owner of record is Hp Mjm Housing Development Fund Company, INC.,. HPD has recorded 22 housing violations here, most recently on October 10, 2026. 7 of the 22 most recent violations are still open. City tax records listed 6 rent-stabilized apartments here in 2024.
- HPD violations
- 22
- DOB violations
- 4
- ECB violations
- 10
- HPD complaints
- 52
What to know
Immediately hazardous issues among recent violations are still open.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
Counts come from owners' rent-stabilization filings shown on NYC Department of Finance tax bills, as extracted by JustFix. They tell you a building has stabilized apartments, not which ones.
Think your apartment is stabilized? Request its rent history from HCR (free), then check your renewal with the renewal calculator.
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 22
- ANon-hazardous
Post a proper notice regarding rent stabilization law, in a form approved by the commissioner, in a conspicuous location within the common area at the buildings entrance. for more information about signage requirements, please visit: https://www.nyc.gov/site/hpd/services-and-information/required-signage.page
Oct 10, 2026
Open — Nov sent out - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 2b, 22nd story, 1st apartment from south at west
Oct 9, 2026 · Apt 2B
Open — Nov sent out - ANon-hazardous
Post a proper notice regarding rent stabilization law, in a form approved by the commissioner, in a conspicuous location within the common area at the buildings entrance. for more information about signage requirements, please visit: https://www.nyc.gov/site/hpd/services-and-information/required-signage.page
Jun 6, 2026
Open — Nov certified on time - ANon-hazardous
§ 53, 187, 231 m/d law and department rules and regulations. provide a shoe properly secured to bottom of string of dropladder missing at fire escape at north
Jun 6, 2026
Open — Nov certified on time - ANon-hazardous
§ 53, 187, 231 m/d law and department rules and regulations. provide a shoe properly secured to bottom of string of dropladder shoe at north side of the building at fire escape
Oct 30, 2025
Closed — Violation dismissed - ANon-hazardous
Properly repair the broken or defective inoperative intercom system from building front entrance to panel at north wall in the foyer located at apt 2b, 2nd story, 1st apartment from south at west
Apr 15, 2022 · Apt 2B
Closed — Violation dismissed - ANon-hazardous
Cleanse to the satisfaction of this department the ceramic tiles surface with grouted joints of visible mold at south wall around bathtub in the bathroom located at apt 2b, 2nd story, 1st apartment from south at west
Apr 15, 2022 · Apt 2B
Closed — Violation dismissed - BHazardous
Repair or replace the smoke detector missing in the entire apartment located at apt 2b, 2nd story, 1st apartment from south at west
Apr 15, 2022 · Apt 2B
Open — Nov sent out - BHazardous
Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 2b, 2nd story, 1st apartment from south at west
Apr 15, 2022 · Apt 2B
Open — Nov sent out - BHazardous
Properly repair the broken or defective inoperative light fixture at ceiling at public hall, 2nd story
Apr 15, 2022
Open — Nov sent out
Show 12 more ↓
- CImmediately hazardous
Provide an adequate supply of heat for the apartment in the entire apartment located at apt 2b, 2nd story
Nov 22, 2020 · Apt 2B
Closed — Violation dismissed - CImmediately hazardous
Provide ready access to buildings heating system door locked at cellar
Nov 22, 2020
Closed — Violation dismissed - ANon-hazardous
Repair the broken or defective plastered surfaces and paint in a uniform color ..south wall in the 1st room from east located at apt 2b, 2nd story, apartment at west
Apr 17, 2018 · Apt 2B
Closed — Violation dismissed - ANon-hazardous
Paint with light colored paint to the satisfaction of this department ..wood stool at window in the 2nd room from east at south located at apt 2b, 2nd story, apartment at west
Apr 17, 2018 · Apt 2B
Closed — Violation dismissed - ANon-hazardous
Post and maintain a proper sign on wall of entrance story showing the registration number assigned by the department and the address of the building. at public hall, 1st story
Apr 17, 2018
Closed — Violation closed - ANon-hazardous
Post, in a form approved by the commissioner, and maintain a notice in a common area of the building regarding the procedures that should be followed when a gas leak is suspected
Apr 17, 2018
Closed — Violation closed - ANon-hazardous
Paint with light colored paint to the satisfaction of this department wood stool at window in the 1st room from east located at apt 2b, 2nd story, apartment at west
Apr 17, 2018 · Apt 2B
Closed — Violation dismissed - ANon-hazardous
Properly repair the broken or defective air ventilation at wall in the bathroom located at apt 2b, 2nd story, 1st apartment from south at west
Aug 25, 2017 · Apt 2B
Closed — Violation dismissed - ANon-hazardous
Repair the broken or defective plastered surfaces and paint in a uniform color north/ south/ east / west walls in the bathroom located at apt 2b, 2nd story, apartment at west
Aug 25, 2017 · Apt 2B
Closed — Violation dismissed - BHazardous
Provide adequate lighting at or near the outside of the front entranceway of the building and keep same burning from sunset every day to sunrise on the day following 100 watts minimum required, light fixture present
Nov 29, 2014
Closed — Violation dismissed - BHazardous
Provide adequate lighting at or near the outside of the front entranceway of the building and keep same burning from sunset every day to sunrise on the day following 100 watts minimum required (light fixtures present)
Nov 27, 2014
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). defective located at apt 3a, 3rd story, apartment at north
Sep 29, 2014 · Apt 3A
Closed — Violation dismissed
DOB building violations · 4
- Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2016 inspection report
Apr 6, 2018
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2015 inspection report
Feb 24, 2017
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 29, 1995
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jul 25, 1994
Dob violation - dismissed
ECB violations · 10
- Class - 1
Unlawful acts. failure to comply with the commissioner's order. failure to obtain permits or file certificate of corrections for summons 39081893r, comply with commissioner's order
May 13, 2026 · Penalty $2,500
Active - Class - 2
Failure to comply with the commissioner's order to file a certificate of correction with the dept of buildings for summons 35647019p, file a certificate of correction
May 13, 2026 · Penalty $1,250
Active - Class - 2
For occupancy contrary. at time of inspection observed detailing center shampoo compound hand wash sign for car wash to operate out of garage #1. observed male occupant with cleaning supplies and car scents ite
Jul 22, 2024 · Penalty $1,250
Active - Class - 1
Work without a permit: at time of inspection, observed work in progress at an existing garage attached to existing 4-story bldg. the garage is at exposure 4 of the building. the garage is deviated into 5 sectio
Jun 18, 2023 · Penalty $1,250
Active - Class - 2
Work without a permit.atoi-observed creation of doorway leading to topof garage roof at exposure#3-observed an ac split unit connected to electrical disconnect box installed to provide power to split unit expo#
Jun 14, 2023 · Penalty $800
Active - Class - 1
Work without permit. at time of inspection observed garage at the rear of the building, 1 compartment commercial stainless steel sink approx. 24" installed with faucet & copper pipe with water. no permit on fil
Mar 21, 2023 · Penalty $2,500
Active - Class - 2
Failure to comply with the commission order to file a certificate of correction with the department of building for notice of violation # 35555162j issued on 08/04/2021 pursuant to 28-204.4, file a certificate
Mar 21, 2023 · Penalty $1,250
Resolve - Class - 2
Cracking, at exp 1 (claason ave) cracking under 3rd fl window. exp4 (dean st) cracking in many areas & above 4th fl window that was bricked up bellying happeing bricks are shifting out, maintain exterior buildi
Oct 27, 2021
Resolve - Class - 2
Occupancy contrary to that allowed by the c of o of buildings dept records. at time of my inspection observe 2 business operating,1-is body fender repair shop and 2-is a jukebox repair shop locate at exposure#4
Aug 4, 2021 · Penalty $1,250
Resolve - Class - 2
Work w/o permit:at time of my inspection observed ongoing constructionactivities w/o dob job permit installing cinder blocks and installing new wooden beams approx 8,and also installed metal beams. the illegal
Aug 4, 2021
Resolve
Complaints
- Heat/hot water
Entire building
Oct 9, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Oct 8, 2026 · Apt 2B
Close - Heat/hot water
Entire building
Oct 7, 2026 · Apt ALL
Close - Heat/hot water
Entire building
Oct 7, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Jun 5, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Apr 26, 2026 · Apt 2B
Close - Heat/hot water
Entire building
Apr 26, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Nov 24, 2025 · Apt 4B
Close - Heat/hot water
Entire building
Nov 23, 2025 · Apt BLDG
Close - Heat/hot water
Apartment only
Oct 28, 2025 · Apt 2B
Close
Show 40 more ↓
- General
Bell/buzzer/intercom
Feb 13, 2022 · Apt 2B
Close - Heat/hot water
Apartment only
Jan 15, 2022 · Apt 2A
Close - Heat/hot water
Entire building
Feb 9, 2021 · Apt 2B
Close - Heat/hot water
Entire building
Nov 18, 2020 · Apt 2B
Close - Heat/hot water
Entire building
Nov 6, 2018 · Apt 3A
Close - Paint/plaster
Window/frame
Apr 12, 2018 · Apt 2B
Close - Paint/plaster
Wall
Apr 12, 2018 · Apt 2B
Close - Heat/hot water
Apartment only
Jan 11, 2018 · Apt 2B
Close - Heat/hot water
Apartment only
Jan 8, 2018 · Apt 2B
Close - Plumbing
Water supply
Nov 15, 2017 · Apt 2B
Close - Unsanitary condition
Sewage
Nov 1, 2017 · Apt G1
Close - Paint/plaster
Wall
Aug 22, 2017 · Apt 2B
Close - General
Ventilation system
Aug 22, 2017 · Apt 2B
Close - Unsanitary condition
Pests
Aug 22, 2017 · Apt 2B
Close - Heat/hot water
Entire building
Feb 20, 2015 · Apt BLDG
Close - Electric
Bell-buzzer/intercom
Mar 7, 2013 · Apt 4B
Close - Plumbing
Toilet
Feb 4, 2013 · Apt 4B
Close - General
Doors
Feb 4, 2013 · Apt 4B
Close - Heating
Heat related
Mar 7, 2011 · Apt 4A
Close - Heating
Heat related
Dec 7, 2010 · Apt BLDG
Close - Heating
Heat related
Dec 11, 2008 · Apt 4B
Close - Heating
Heat related
Dec 7, 2008 · Apt 4B
Close - Plumbing
Water-leaks
May 23, 2008 · Apt 4B
Close - Plumbing
Radiator
May 23, 2008 · Apt 4B
Close - Plumbing
Radiator
May 23, 2008 · Apt 4B
Close - General
Cooking gas
May 23, 2008 · Apt 4B
Close - Plumbing
Water-leaks
Apr 25, 2008 · Apt 4B
Close - Paint/plaster
Radiator
Apr 25, 2008 · Apt 4B
Close - Appliance
Electric/gas range
Apr 25, 2008 · Apt 4B
Close - Plumbing
Water-leaks
Apr 15, 2008 · Apt 4B
Close - General
Cooking gas
Apr 15, 2008 · Apt 4B
Close - Heating
Heat related
Apr 15, 2008 · Apt 4B
Close - Appliance
Electric/gas range
Apr 1, 2008 · Apt 4B
Close - Plumbing
Radiator
Apr 1, 2008 · Apt 4B
Close - Plumbing
Radiator
Apr 1, 2008 · Apt 4B
Close - Heating
Heat related
Feb 26, 2008 · Apt 4B
Close - Appliance
Electric/gas range
Feb 21, 2008 · Apt 4B
Close - Heating
Heat related
Feb 21, 2008 · Apt 4B
Close - Heating
Heat related
Feb 14, 2007 · Apt 2A
Close - Heating
Heat related
Feb 5, 2007 · Apt 3B
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Mixed residential and retail building (S9)
- Year built
- 1931
- Floors
- 4
- Residential units
- 6
- Building area
- 6,250 ft²
- Lot area
- 2,450 ft²
- Zoning
- R6A
- Community board
- 308
- Council district
- 35
- Block / lot
- 1141 / 43
- Assessed value
- $840,150
- Landmark / historic district
- No
HPD registration #307464, last renewed Jun 30, 2025.
Questions about 634 Classon Avenue
Who owns 634 Classon Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Hp Mjm Housing Development Fund Company, INC.,.
Does 634 Classon Avenue have violations?
Yes. NYC HPD has recorded 22 housing violations at this property.
Is 634 Classon Avenue rent stabilized?
NYC Department of Finance tax bills listed 6 rent-stabilized units here in 2024 (about 100% of its 6 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 634 Classon Avenue built?
City records list 1931 as the year it was built.
How many apartments are in 634 Classon Avenue?
It has 6 residential units and 8 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.