# 450 Knickerbocker Avenue, Brooklyn, NY 11237 BBL 3032880020 · Block 3288 · Lot 20 · BIN 3075090 Canonical page: https://nycpropertyfacts.com/ny/brooklyn/450-knickerbocker-avenue-3032880020 Last updated: 2026-10-31 · Open-item counts as of 2026-11-08 ## Summary 450 Knickerbocker Avenue (Brooklyn, NY 11237; tax lot BBL 3032880020) is a 2-unit mixed-use building with apartments and ground-floor commercial space (building class S2: mixed-use: two-family home with one store or office), built around 1930, on a 1,802 sq ft lot zoned C4-3. City tax records list the owner as 450 KNICKERBOCKER LLC. The Department of Finance's final market value for tax year 2027 is $2,584,000. As of November 8, 2026, NYC Open Data shows four active DOB violations, one open HPD violation and one OATH ticket with an unpaid balance. There were two 311 requests in the past 12 months and two HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.) How to cite: NYC Property Facts, “450 Knickerbocker Avenue, Brooklyn, NY 11237 (BBL 3032880020)”, data as of 2026-11-08, https://nycpropertyfacts.com/ny/brooklyn/450-knickerbocker-avenue-3032880020. Source: NYC Open Data. ## Neighborhood Bushwick (West): https://nycpropertyfacts.com/ny/brooklyn/11237 - Open HPD violations: https://nycpropertyfacts.com/ny/brooklyn/11237/open-hpd-violations - Active DOB violations: https://nycpropertyfacts.com/ny/brooklyn/11237/active-dob-violations - Active ECB violations: https://nycpropertyfacts.com/ny/brooklyn/11237/active-ecb-violations - Open DOB jobs: https://nycpropertyfacts.com/ny/brooklyn/11237/open-dob-jobs - Unpaid OATH tickets: https://nycpropertyfacts.com/ny/brooklyn/11237/unpaid-oath-tickets ## ZIP Brooklyn 11237: https://nycpropertyfacts.com/ny/brooklyn/11237 ## Nearby properties Ordered by map distance among lots on this street within 40 house numbers and on this tax block within 15 lot numbers. - 446 Knickerbocker Avenue (28 ft): https://nycpropertyfacts.com/ny/brooklyn/446-knickerbocker-avenue-3032880019 - 452 Knickerbocker Avenue (35 ft): https://nycpropertyfacts.com/ny/brooklyn/452-knickerbocker-avenue-3032880001 - 442 Knickerbocker Avenue (51 ft): https://nycpropertyfacts.com/ny/brooklyn/442-knickerbocker-avenue-3032880018 - 436 Knickerbocker Avenue (102 ft): https://nycpropertyfacts.com/ny/brooklyn/436-knickerbocker-avenue-3032880015 - 445 Knickerbocker Avenue (121 ft): https://nycpropertyfacts.com/ny/brooklyn/445-knickerbocker-avenue-3032890062 - 443 Knickerbocker Avenue (154 ft): https://nycpropertyfacts.com/ny/brooklyn/443-knickerbocker-avenue-3032890001 - 1417 Myrtle Avenue (104 ft): https://nycpropertyfacts.com/ny/brooklyn/1417-myrtle-avenue-3032880005 - 254 Harman Street (151 ft): https://nycpropertyfacts.com/ny/brooklyn/254-harman-street-3032880013 ## Open items | Item | Count | |---|---| | Open DOB jobs (permit issued, not signed off) | 0 | | Active DOB violations | 4 | | Active ECB violations | 0 | | Open HPD violations | 1 | | OATH tickets with unpaid balance | 1 | ## Lot & building - Owner of record: 450 KNICKERBOCKER LLC - Building class: S2 – Mixed-use: two-family home with one store or office - Year built: 1930 - Floors: 3 - Units: 2 residential / 3 total - Lot area: 1,802 sq ft · Building area: 4,126 sq ft - Zoning: C4-3 - Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), city dataset updated 2026-08-24; last loaded 2026-11-08 ## Tax assessment - Tax year 2027 (final roll): market value $2,584,000, assessed value $155,040, tax class 1 - 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 | |---|---|---|---| | 2013-07-23 | recorded (DEED) | DEED dated 2013-07-23 from YOO, WON YOUNG to 450 KNICKERBOCKER LLC, no price stated ($0). | bnx9-e6tj | | 1979-07-24 | recorded (DEED) | DEED dated 1979-07-24 from GREENMAN ARLENE SILVERS; GREENMAN HERBERT M THE SOLE HEIRS AT LAW; GREENMAN JOYCE; GREENMAN HENRY to YOO WON YOUNG, 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 | |---|---|---|---| | 2004-06-14 | n/a (ISSUED (initial)) | BIS work permit for job 301747144: Equipment work / Mechanical/HVAC. Issued 2004-06-14, expires 2004-11-01. | 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 | |---|---|---|---| | 1995-10-12 | open (VW-VIOLATION WORK WITHOUT PERMIT - ACTIVE) | DOB violation (C-CONSTRUCTION OTHER OPTIONAL). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 | | 1994-06-01 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIRED). 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 | | 1993-06-01 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIRED). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 | | 2013-11-06 | open (Nov Sent Out) | HPD class B violation (Class B) in apt 2: SECTION 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ENTIRE APARTMENT LOCATED AT APT 2, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH. Open — not recorded as corrected. | wvxf-dwi5 | ## 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 | |---|---|---|---| | 2013-03-07 | open (DOCKETED · DEFAULTED) | OATH ticket from Dos - Enforcement Agents: ILLEGAL PLACEMENT OF STICKERS OR DECALS ON PUBLIC OR PRIVATE PROPERTY. Unpaid balance $500. 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. | Date | Status | Description | Source | |---|---|---|---| | 2021-09-07 | closed (CLOSE) | HPD complaint (apt BLDG): Heat/Hot Water – Entire Building. The Department of Housing Preservation and Development was not able to gain access to your apartment or others in the building to inspect for a lack of heat or hot water. The complaint has been close… | ygpa-z7cr | | 2021-05-13 | closed (CLOSE) | HPD complaint (apt 2FL): Door/Window – Window Frame; Water Leak – Slow Leak; Door/Window – Window Pane. The Department of Housing Preservation and Development inspected the following conditions. No violations were issued. The complaint has been closed. | ygpa-z7cr | | 2026-07-15 | closed (Closed) | 311 request to NYPD: Illegal Parking – Blocked Bike Lane. | erm2-nwe9 | | 2026-06-22 | closed (Closed) | 311 request to NYPD: Illegal Parking – Double Parked Blocking Traffic. | erm2-nwe9 | ## 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 450 KNICKERBOCKER LLC. | 64uk-42ks | | 2013-07-23 | recorded | Grantee (buyer) on the most recent deed (DEED, 2013-07-23). | 636b-3b5g | --- 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/3032880020