roofy

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

Concern
1 open Class C

Immediately hazardous issues among recent violations are still open.

Watch
Last violation Oct 10, 2026

Date of the most recent HPD inspection that found a problem.

Good
No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

Rent-stabilized units in 2024
6
About 100% of the building's 6 apartments

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.

Stabilized units by tax-bill year

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

  • A

    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
  • C

    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
  • A

    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
  • A

    § 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
  • A

    § 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
  • A

    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
  • A

    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
  • B

    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
  • B

    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
  • B

    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 ↓
  • C

    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
  • C

    Provide ready access to buildings heating system door locked at cellar

    Nov 22, 2020

    Closed — Violation dismissed
  • A

    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
  • A

    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
  • A

    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
  • A

    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
  • A

    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
  • A

    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
  • A

    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
  • B

    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
  • B

    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
  • B

    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

Sales come from the NYC Department of Finance rolling sales file.

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.