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442 Knickerbocker Avenue, Brooklyn, NY 11237

BBL 3032880018 (Borough 3, Block 3288, Lot 18) · BIN 3075088 · Last updated:

Also recorded in city data as: 444 Knickerbocker Ave · 44456 Knickerbocker Ave

Summary · as of October 31, 2026

442 Knickerbocker Avenue (Brooklyn, NY 11237; tax lot BBL 3032880018) 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 1931, on a 1,432 sq ft lot zoned C4-3. City tax records list the owner as EAST WEST TRADING &PROM. The Department of Finance's final market value for tax year 2027 is $2,634,000. As of October 31, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off, 30 active DOB violations, four active ECB violations and 22 OATH tickets with an unpaid balance. There were 34 311 requests in the past 12 months and no HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
EAST WEST TRADING &PROM
Building class
S2 · Mixed-use: two-family home with one store or office
Year built · units
1931 · 2 res.
Lot area · zoning
1,432 sq ft · C4-3
Market value (DOF)
$2,634,000 FY2027
Last priced deed
—
BBL
3032880018
BIN
3075088

How to cite: NYC Property Facts, “442 Knickerbocker Avenue, Brooklyn, NY 11237 (BBL 3032880018)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/442-knickerbocker-avenue-3032880018. Source: NYC Open Data.

Lot & building

Basic facts about the tax lot and building from the city’s PLUTO database.

Owner (as listed by the city)
EAST WEST TRADING &PROMThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
S2 – Mixed-use: two-family home with one store or officeThe Department of Finance’s category for what kind of building this is.
Land use
Mixed residential & commercialCity Planning’s broad category of how the lot is used.
Year built
1931Often an estimate for older buildings.
Floors
3
Units
2 residential / 3 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
1,432 sq ft (24.08 ft × 57.25 ft)
Building floor area
3,852 sq ft (incl. 1,926 sq ft commercial)
Zoning
C4-3The zoning district sets what can be built and used here. Commercial district.
Built vs. allowed density (FAR)
2.69 built / 2.43 max residentialFloor Area Ratio = building floor area ÷ lot area. If built FAR is below the maximum, zoning may allow more floor area (other rules apply).
Identifiers
BBL 3032880018 (Borough 3, Block 3288, Lot 18) · BIN 3075088BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).

Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; data as of 2026-10-31; Building Footprints — city dataset updated 2026-10-25; data as of 2026-10-31

Tax assessment

How the Department of Finance values this lot for property tax.

Market value (tax year 2027, final roll)
$2,634,000The Department of Finance’s estimate of value for tax purposes. It is not an appraisal and is often far from the sale price.
Assessed value
$158,040The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$54,000Assessed value minus any exemptions.
Tax class
Tax class 1 – 1–3 family homes (and some small mixed-use / vacant lots)
Tax yearRollMarket valueAssessed valueTax class
2027Final$2,634,000$158,0401
2026Final$2,221,000$133,2601
2025Final$1,811,000$108,6601

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-10-31

Sales & deed history 3

Deeds recorded with the City Register (ACRIS). A deed transfers ownership. A $0 or very low price usually means a transfer between related parties, an estate, or a refinance-related transfer, not a market sale. This is not a title search; mortgages, liens and other documents are not shown.

DateTypePriceSeller (grantor)Buyer (grantee)Doc ID
1990-06-20DEED$0 / not statedSiafakas, Christos; Rosato, DonnaEast West Trading &PromFT_3110001549711
1985-09-06DEED$0 / not statedKatz, David; Spinac, IrwinRosato, Donna; Siafakas, ChristosFT_3720001114972
1971-07-06DEED$0 / not statedHershon Mack; Hershon MarkSpinac Irwin; Katz DavidBK_7130049201794

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-10-31; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-10-31; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-10-31

DOB job filings 1 open of 2

A “job” is an application to the Department of Buildings to do construction work. A job marked Permitted, not signed off had a work permit issued but the city has no record of final sign-off (inspection/completion). Old jobs left in this state are common and appear in buyer and lender due diligence; the work may or may not have been done.

StatusJob #TypeFiledEst. cost
Permitted, not signed off
PERMIT ISSUED - PARTIAL JOB · 2015-01-22
321060613
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2015-01-21$16,000
Not open
PLAN EXAM - APPROVED · 2015-01-12
340219285
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2014-12-26$10,000

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-10-30; data as of 2026-10-31; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 6

Individual permits issued under DOB jobs (one job can have several permits, e.g. plumbing and construction). Permit expiration alone does not mean the job was completed or signed off.

IssuedExpiresJob #WorkPermit status
2015-04-142016-03-17321084081
BIS
SignISSUED (initial)
2015-01-222016-01-22321060613
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (initial)
2015-01-222015-10-10321060613
BIS
Equipment work / Other / general constructionISSUED (initial)
2002-09-192003-02-15301400446
BIS
SignISSUED (initial)
——340219285
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentIN PROCESS (initial)
——321060613
BIS
Plumbing / PlumbingIN PROCESS (initial)

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-10-30; data as of 2026-10-31; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 30 active of 30

Violations issued by the Department of Buildings for building-code or zoning conditions. Active means DOB has not recorded the violation as resolved or dismissed. Many active DOB violations are old (e.g. elevator or boiler inspection paperwork).

StatusIssuedTypeDescriptionNumber
Active
V-DOB VIOLATION - ACTIVE
2025-11-14LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTIONV111425LBLVIO11409
Active
V-DOB VIOLATION - ACTIVE
2024-09-23LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2023 EXTERNAL LOW PRESSURE INSPECTIONV092324LBLVIO10356
Active
V-DOB VIOLATION - ACTIVE
2023-06-30LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTIONV063023LBLVIO37985
Active
V-DOB VIOLATION - ACTIVE
2023-06-30LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2020 EXTERNAL LOW PRESSURE INSPECTIONV063023LBLVIO17879
Active
V-DOB VIOLATION - ACTIVE
2023-06-20LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2019 EXTERNAL LOW PRESSURE INSPECTIONV062023LBLVIO39522
Active
V-DOB VIOLATION - ACTIVE
2023-06-20LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTIONV062023LBLVIO19587
Active
V-DOB VIOLATION - ACTIVE
2023-04-25LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED-FAILURE TO FILE 2022 EXTERNAL LOW PRESSURE INSPECTIONV042523LBLVIO12805
Active
V-DOB VIOLATION - ACTIVE
2020-01-17LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2017 INSPECTION REPORTV011720LBLVIO01210
Active
V-DOB VIOLATION - ACTIVE
2013-03-01LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2011 INSPECTION REPORTV030113LBLVIO09031
Active
V-DOB VIOLATION - ACTIVE
2011-12-13LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDVIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2010 INSPECTION REPORTV121311LBLVIO12052
Active
V-DOB VIOLATION - ACTIVE
2009-12-31LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDV123109LBLVIO14064
Active
V-DOB VIOLATION - ACTIVE
2009-01-01LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV010109LL629113216
Active
V-DOB VIOLATION - ACTIVE
2008-01-03LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV010308LL629113272
Active
V-DOB VIOLATION - ACTIVE
2007-01-19LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV011907LL629113640
Active
V-DOB VIOLATION - ACTIVE
2006-01-06LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV010606LL629113124

Showing 15 of 30 records. The API and the source dataset have the full list.

Source: DOB Violations — city dataset updated 2026-10-31; data as of 2026-10-31

ECB violations (DOB) 4 active of 4

DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active means the condition has not been certified as corrected and/or the case is not resolved. A balance due is a fine the city says is unpaid.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Active
IN VIOLATION · NO COMPLIANCE RECORDED
2001-06-14Non-HazardousWORK WITHOUTA PERMIT. FACADE OF THE BUILDING HAS BEEN ALTERED. ALL OPENINGS HAVE BEEN SEALED CONTRARY TO SECTION 27-292A OF THE ADMINISTRATIVE CODE. REMEDY: OBTAIN PERMIT.$500 / $500 / $034296067L
Active
IN VIOLATION · NO COMPLIANCE RECORDED
1999-03-11Non-HazardousWORK WITHOUT A PERMIT. FACADE OF BUILDING HAS BEEN ALTERED. FROM 2ND TO 3RD FLOOR ALL OPENING ARE SEALED CONTRARY TO SECTION 27-292A OF THEADMINISTRATIVE CODE. REMEDY: OBTAIN PERMIT.$500 / $500 / $034184575L
Active
IN VIOLATION · NO COMPLIANCE RECORDED
1993-02-24Non-HazardousFAILURE TO MAINATIN: IN THAT THERE ARE NUMEROUS HOLES THROUGHOUT CELLAR CEILING WODDEN BEAMS (3) SHIFT VARIOUS LOCATIONS. STORAGE OF CARD BOXES IN AND AROUND BOILER AND HOT WATER HEATER. CREATING A HAZARDOUS CO$800 / $800 / $034085925Z
Active
IN VIOLATION · NO COMPLIANCE RECORDED
1991-04-04Non-HazardousFAILRUE TO MAINTAIN. NUMEROUS HOLES THROUGHOUT CEILING AT CELLAR BOILER NOT ENCLOSED. ENTIRE CELLAR IS BEING USED AS STORAGE FOR SNEAKERS. REMEDY: PROVIDE FIRE RATED CEILING THROUGHOUT$115 / $115 / $034055222P

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-10-31

OATH tickets (all agencies) 22 unpaid of 76

Summonses heard at the Office of Administrative Trials and Hearings, from agencies like Sanitation, Buildings, Fire and Health, linked to this lot’s block and lot. Default means the respondent did not appear at the hearing, which typically results in the maximum penalty. Tickets may be issued to tenants or businesses at the address, not just the owner. DOB ECB tickets appear here too.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
Unpaid balance Default
DEFAULTED · DEFAULTED
2026-05-23Sanitation OthersDIRTY SIDEWALKEAST WEST TRADING PROM$300 / $0 / $300049829003X
Unpaid balance Default
DEFAULTED · DEFAULTED
2026-04-28Sanitation OthersDIRTY SIDEWALKEAST WEST TRADING PROM$300 / $0 / $300049725885K
Unpaid balance Default
DEFAULTED · DEFAULTED
2026-04-27Sanitation OthersDIRTY SIDEWALK COMM MAN INDUSTRIAL MIXED USE 1STFRUITTI YUMMI BROOKLYN INC$450 / $0 / $450049791098R
Unpaid balance Default
DOCKETED · DEFAULTED
2024-10-21Sanitation OthersDIRTY SIDEWALKEAST WEST TRADING PROM$300 / $0 / $300048618915M
Unpaid balance Default
DOCKETED · DEFAULTED
2024-10-02Sanitation OthersDIRTY SIDEWALKFRUITTI YUMMI BROOKLYN INC$300 / $0 / $300048671854K
Unpaid balance Default
DOCKETED · DEFAULTED
2024-09-18Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETEAST WEST TRADING PROM$300 / $0 / $300048433745H
Unpaid balance Default
DOCKETED · DEFAULTED
2024-08-12Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETEAST WEST TRADING PROM$300 / $0 / $300048528866X
Unpaid balance Default
DOCKETED · DEFAULTED
2024-07-24Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETEAST WEST TRADING PROM$300 / $0 / $300048512267H
Unpaid balance Default
DOCKETED · DEFAULTED
2024-07-12Dos - Enforcement AgentsDIRTY SIDEWALKFEITTI YUMMI$300 / $0 / $300048483374N
Unpaid balance Default
DOCKETED · DEFAULTED
2023-06-24Dos - Enforcement AgentsFAILURE TO CLEAN 18 INCHES INTO STREETFRUITTI YUMMI$300 / $0 / $300047982630N
Unpaid balance Default
DOCKETED · DEFAULTED
2022-09-12Dos - Enforcement AgentsDIRTY SIDEWALKFRUITTI YUMMI$300 / $0 / $300047560166Z
Unpaid balance Default
DOCKETED · DEFAULTED
2022-08-10Dos - Enforcement AgentsILLEGAL POSTING OF HANDBILL NOTICEABSURD CONCLAVE LLC C O LEGALC$125 / $0 / $125047381060R

Showing 12 of 76 records. The API and the source dataset have the full list.

Source: OATH Hearings Division Case Status — city dataset updated 2026-10-31; data as of 2026-10-31

HPD registration & contacts

Owners of most rental buildings must register with the Department of Housing Preservation and Development each year and list an owner and managing agent.

No HPD registration found. Registration is required for buildings with 3 or more apartments (and for 1–2 family homes where neither the owner nor family lives there).

Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-10-28; data as of 2026-10-31; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-10-31

HPD housing-code violations 0 open of 0

Violations HPD inspectors issued for conditions in residential buildings (heat, leaks, mold, pests, lead paint, etc.). Class letters show how serious: Class A – non-hazardous (HPD gives 90 days to correct); Class B – hazardous (30 days to correct); Class C – immediately hazardous (24 hours to correct for most conditions); Class I – information / order (e.g. orders to register, lead or other administrative orders). Open means HPD has not recorded the condition as corrected.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-10-31; data as of 2026-10-31

HPD complaints 0

Complaints tenants or others made to HPD (usually via 311) about housing conditions, from 2019 onward. A complaint is not a violation; HPD may inspect and issue one.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-10-31; data as of 2026-10-31

311 requests (last 12 months) 34

Recent 311 service requests the city geocoded to this lot: noise, illegal parking, heat, sanitation and more. Anyone can file them, so they describe activity at or near the address, not necessarily the building itself.

OpenedAgencyComplaintStatusClosed
2026-10-08NYPDIllegal Parking – Blocked Bike LaneClosed2026-10-08
2026-09-09NYPDIllegal Parking – Blocked Bike LaneClosed2026-09-09
2026-08-24NYPDNoise - Street/Sidewalk – Loud TalkingClosed2026-08-24
2026-08-05NYPDIllegal Parking – Double Parked Blocking TrafficClosed2026-08-05
2026-07-30NYPDAnimal-Abuse – NeglectedClosed2026-07-30
2026-07-28NYPDIllegal Parking – Blocked Bike LaneClosed2026-07-28
2026-06-29NYPDIllegal Parking – Blocked Bike LaneClosed2026-06-29
2026-05-07NYPDIllegal Parking – Blocked Bike LaneClosed2026-05-07
2026-04-09NYPDIllegal Parking – Blocked Bike LaneClosed2026-04-09
2026-03-21NYPDIllegal Parking – Blocked Bike LaneClosed2026-03-21

Showing 10 of 34 records. The API and the source dataset have the full list.

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-10-31; data as of 2026-10-31

Nearby properties

On Knickerbocker Ave

Same tax block (3288)

All properties on Knickerbocker Ave, Brooklyn · All of Brooklyn 11237 (Bushwick (West))

Open-item counts as of October 31, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · API & MCP docs