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90 Diamond Street

Brooklyn, NY 11222BBL 3-02652-0043Map

Owner of record: Czajkowski, Mariusz

90 Diamond Street is a walk-up apartment building built in 1930 in Brooklyn, 11222. It has 6 residential units across 3 floors. The owner of record is Czajkowski, Mariusz. HPD has recorded 7 housing violations here, most recently on May 4, 2026. 1 of the 7 most recent violations are still open. City tax records listed 5 rent-stabilized apartments here in 2024.

HPD violations
7
DOB violations
1
ECB violations
0
HPD complaints
2

What to know

Good
No open Class C

No open immediately-hazardous violations among recent records.

Good
Last violation May 4, 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
5
About 83% of the building's 6 apartments
Up from 4 in 2018

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 · 7

  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    May 4, 2026

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Nov 20, 2025

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Nov 10, 2022

    Closed — Violation dismissed
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Feb 24, 2022

    Closed — Violation dismissed
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Apr 8, 2021

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Apr 8, 2021

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Oct 16, 2018

    Closed — Violation dismissed

DOB building violations · 1

  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Feb 27, 2001

    Dob violation - dismissed

ECB violations · 0

No ECB violations on record

Complaints

  • Unsanitary condition

    Mold

    Feb 5, 2024 · Apt 3L

    Close
  • Heating

    Heat related

    Oct 23, 2005 · Apt 39

    Close

Sales history

No recorded sales in our data

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

Building details

Building type
Walk-up apartment building (C2)
Year built
1930
Floors
3
Residential units
6
Building area
3,750 ft²
Lot area
2,500 ft²
Zoning
R6B
Community board
301
Council district
33
Block / lot
2652 / 43
Assessed value
$804,150
Landmark / historic district
No

HPD registration #361042, last renewed Jul 2, 2024.

Questions about 90 Diamond Street

Who owns 90 Diamond Street?

The owner of record in NYC Department of City Planning PLUTO data is Czajkowski, Mariusz.

Does 90 Diamond Street have violations?

Yes. NYC HPD has recorded 7 housing violations at this property.

Is 90 Diamond Street rent stabilized?

NYC Department of Finance tax bills listed 5 rent-stabilized units here in 2024 (about 83% of its 6 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.

When was 90 Diamond Street built?

City records list 1930 as the year it was built.

How many apartments are in 90 Diamond Street?

It has 6 residential units.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.