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673 Knickerbocker Avenue

Brooklyn, NY 11221BBL 3-03378-0006Map

Owner of record: 673 Knickerbocker LLC

673 Knickerbocker Avenue is a walk-up apartment building built in 1910 in Brooklyn, 11221. It has 3 residential units across 3 floors. The owner of record is 673 Knickerbocker LLC. HPD has recorded 4 housing violations here, most recently on March 15, 2026. 1 of the 4 most recent violations are still open.

HPD violations
4
DOB violations
0
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 Mar 15, 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

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 4

  • A

    § 329, m/d law and dept. rules and regs. provide a completed certificate of inspection visits in a proper frame readily accessible for signature, bottom edge of frame between 48-62 inches above floor at missing at public hall, 1st story

    Mar 15, 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 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.

    Apr 9, 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 9, 2015

    Closed — Violation dismissed

DOB building violations · 0

No DOB violations on record

ECB violations · 0

No ECB violations on record

Complaints

  • General

    Ventilation system

    Oct 27, 2025 · Apt FL1

    Close
  • Water leak

    Heavy flow

    Sep 29, 2023 · Apt 3

    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 (C0)
Year built
1910
Floors
3
Residential units
3
Building area
3,600 ft²
Lot area
1,900 ft²
Zoning
R6
Community board
304
Council district
37
Block / lot
3378 / 6
Assessed value
$101,940
Landmark / historic district
No

HPD registration #372380, last renewed Oct 9, 2025.

Questions about 673 Knickerbocker Avenue

Who owns 673 Knickerbocker Avenue?

The owner of record in NYC Department of City Planning PLUTO data is 673 Knickerbocker LLC.

Does 673 Knickerbocker Avenue have violations?

Yes. NYC HPD has recorded 4 housing violations at this property.

Is 673 Knickerbocker Avenue rent stabilized?

No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.

When was 673 Knickerbocker Avenue built?

City records list 1910 as the year it was built.

How many apartments are in 673 Knickerbocker Avenue?

It has 3 residential units.

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