# 421 Knickerbocker Avenue, Brooklyn, NY 11237

BBL 3032790004 · Block 3279 · Lot 4 · BIN 3074797, 3074838  
Canonical page: https://nycpropertyfacts.com/ny/brooklyn/421-knickerbocker-avenue-3032790004  
Last updated: 2026-11-03 · Open-item counts as of 2026-10-31

Also recorded as: 301 Harman St; 42139 Knickerbocker Ave

## Summary

421 Knickerbocker Avenue (Brooklyn, NY 11237; tax lot BBL 3032790004) is a store building (building class K4: store building (subtype K4)), built around 1931, on a 2,500 sq ft lot zoned C4-3. City tax records list the owner as 421 KNICKERBOCKER REALTY. The Department of Finance's final market value for tax year 2027 is $1,627,000. As of October 31, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off, two active DOB violations and nine OATH tickets with an unpaid balance. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

How to cite: NYC Property Facts, “421 Knickerbocker Avenue, Brooklyn, NY 11237 (BBL 3032790004)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/421-knickerbocker-avenue-3032790004. Source: NYC Open Data.

## Open items

| Item | Count |
|---|---|
| Open DOB jobs (permit issued, not signed off) | 1 |
| Active DOB violations | 2 |
| Active ECB violations | 0 |
| Open HPD violations | 0 |
| OATH tickets with unpaid balance | 9 |

## Lot & building

- Owner of record: 421 KNICKERBOCKER REALTY
- Building class: K4 – Store building (subtype K4)
- Year built: 1931
- Floors: 3
- Units: 0 residential / 1 total
- Lot area: 2,500 sq ft · Building area: 5,350 sq ft
- Zoning: C4-3
- Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), data as of 2026-11-02

## Tax assessment

- Tax year 2027 (final roll): market value $1,627,000, assessed value $732,150, tax class 4
- Source: DOF Property Valuation and Assessment Data (https://data.cityofnewyork.us/d/8y4t-faws)

## Sales & deeds (ACRIS)

Deeds recorded with the City Register. amount 0 usually means a non-market transfer. lots_in_deed > 1 means the price covers several lots.

| Date | Status | Description | Source |
|---|---|---|---|
| 2000-07-12 | recorded (DEED) | DEED dated 2000-07-12 from KHEZRIE-DEBBAS ASSOCIATES to 421 KNICKERBOCKER REALTY LLC, no price stated ($0). | bnx9-e6tj |
| 1985-10-23 | recorded (DEED) | DEED dated 1985-10-23 from CHERA, HENRY to KHEZRIE DEBBAS ASSOC, no price stated ($0). | bnx9-e6tj |
| 1981-12-22 | recorded (DEED) | DEED dated 1981-12-22 from LEVY, LAURENCE R.; ROSENBERG, DAVID to CHERA, HENRY, no price stated ($0). | bnx9-e6tj |
| 1975-01-07 | recorded (DEED) | DEED dated 1975-01-07 from GREENBERG STANLEY to ROSENBERG DAVID, no price stated ($0). | bnx9-e6tj |
| 1967-03-21 | recorded (DEED) | DEED dated 1967-03-21 from KAM PROPERTIES INC to GREENBERG STANLEY; LEVY LAURENCE R, no price stated ($0). | bnx9-e6tj |
| 1966-11-22 | recorded (DEED) | DEED dated 1966-11-22 from MARCUS SYLVIA; BARKER LAURA to KAM PROPERTIES INC, no price stated ($0). | bnx9-e6tj |

## Open DOB jobs and recent work permits

A DOB "job" is an application to do construction work. status "open" = a permit was issued but DOB has no record of final sign-off. Work permits are listed with type "work_permit" and their DOB permit status (they are not counted as open items).

| Date | Status | Description | Source |
|---|---|---|---|
| 1999-06-29 | open (PERMIT ISSUED - ENTIRE JOB/WORK) | BIS job 300876461 (A1 – Major alteration (changes use, egress or occupancy)): PERMIT ISSUED - ENTIRE JOB/WORK — permit issued, no sign-off on record. Proposed second story vertical enlargement; construct interior partitions as sho wn on drawings filed herewith. | ic3t-wcy2 |
| 2024-06-07 | n/a (Signed-off) | DOB NOW work permit for job B01056753-I1: Mechanical Systems — MECHANICAL WORK(REPLACEMENT OF HVAC ROOF TOP UNIT).**NO CHANGE IN USE, OCCUPANCY, OR EGRESS IS INVOLVED UNDER THIS APPLICATION**. Issued 2024-06-07, expires 2025-05-01. | rbx6-tga4 |
| 2002-01-30 | n/a (ISSUED (initial)) | BIS work permit for job 301293357: Equipment work / Mechanical/HVAC. Issued 2002-01-30, expires 2002-06-02. | ipu4-2q9a |
| 2000-07-24 | n/a (ISSUED (initial)) | BIS work permit for job 301016665: Equipment work / Sprinkler. Issued 2000-07-24, expires 2001-07-24. | ipu4-2q9a |
| 2000-07-12 | n/a (ISSUED (initial)) | BIS work permit for job 300876461: Plumbing / Plumbing. Issued 2000-07-12, expires 2001-07-12. | ipu4-2q9a |
| 2000-05-31 | n/a (ISSUED (renewal)) | BIS work permit for job 300876461: Alteration. Issued 2000-05-31, expires 2001-05-03. | ipu4-2q9a |
| 2000-02-07 | n/a (ISSUED (initial)) | BIS work permit for job 300986681: Construction equipment (scaffold, fence, shed) / Construction equipment. Issued 2000-02-07, expires 2000-11-07. | ipu4-2q9a |
| 1999-11-19 | n/a (ISSUED (initial)) | BIS work permit for job 300876461: Alteration. Issued 1999-11-19, expires 2000-05-03. | ipu4-2q9a |

## Open violations (DOB, ECB, HPD)

status "open" = DOB violation category is ACTIVE, ECB violation status is ACTIVE, or HPD violation status is Open.

| Date | Status | Description | Source |
|---|---|---|---|
| 1999-11-18 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (IMEGNCY-IMMEDIATE EMERGENCY ANYTHINGOPTIONAL). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 1993-08-16 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIRED). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |

## OATH tickets with unpaid balance or pending

status "open" = balance due > $0 after a decision (cases awaiting a hearing are "pending"). default=true means the respondent did not appear.

| Date | Status | Description | Source |
|---|---|---|---|
| 2026-06-03 | open (DEFAULTED · DEFAULTED) | OATH ticket from Sanitation Others: DIRTY SIDEWALK COMM MAN INDUSTRIAL MIXED USE 1ST. Unpaid balance $450. Respondent defaulted (did not appear). | jz4z-kudi |
| 2026-03-10 | open (DOCKETED · DEFAULTED) | OATH ticket from Fire Department Of Nyc: RECORDKEEPING. Unpaid balance $1,000. Respondent defaulted (did not appear). | jz4z-kudi |
| 2025-10-27 | open (DOCKETED · DEFAULTED) | OATH ticket from Fire Department Of Nyc: INSPECTION AND TESTING. Unpaid balance $1,000. Respondent defaulted (did not appear). | jz4z-kudi |
| 2022-06-27 | open (DOCKETED · DEFAULTED) | OATH ticket from Dos - Enforcement Agents: LOOSE RUBBISH 1ST OCCURRENCE. Unpaid balance $300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2020-06-24 | open (DOCKETED · DEFAULTED) | OATH ticket from Fire Department Of Nyc: INSPECTION AND TESTING. Unpaid balance $1,000. Respondent defaulted (did not appear). | jz4z-kudi |
| 2019-03-25 | open (DOCKETED · DEFAULTED) | OATH ticket from Dos - Enforcement Agents: STORAGE OF RECEPTACLES - 2ND OFFENSE. Unpaid balance $300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2019-03-23 | open (DOCKETED · DEFAULTED) | OATH ticket from Dos - Enforcement Agents: STORAGE OF RECEPTACLES - 2ND OFFENSE. Unpaid balance $300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2019-03-22 | open (DOCKETED · DEFAULTED) | OATH ticket from Dos - Enforcement Agents: STORAGE OF RECEPTACLES - 2ND OFFENSE. Unpaid balance $300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2018-04-24 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |

## Complaints (HPD since 2019, 311 last 12 months)

Complaints are reports, not violations. status mirrors the published complaint / request status.

No records found.

## Owners & contacts

Owner of record comes from city tax records (PLUTO) and can lag behind recent sales.

| Date | Status | Description | Source |
|---|---|---|---|
| 2026-08-24 | current | City tax records (PLUTO) list the owner as 421 KNICKERBOCKER REALTY. | 64uk-42ks |
| 2000-07-12 | recorded | Grantee (buyer) on the most recent deed (DEED, 2000-07-12). | 636b-3b5g |

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Independent site. Data from NYC Open Data; not affiliated with the City of New York. Not a title search or official record; verify with the issuing agency. JSON: https://nycpropertyfacts.com/api/v1/property/3032790004