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796 Knickerbocker Avenue, Brooklyn, NY 11207

BBL 3034120036 (Borough 3, Block 3412, Lot 36) · BIN 3078887 · Last updated:

Also recorded in city data as: 796 Knickerbock Ave

Summary · as of October 31, 2026

796 Knickerbocker Avenue (Brooklyn, NY 11207; tax lot BBL 3034120036) is a 3-unit walk-up apartment building (building class C0: three-family walk-up), built around 1920, on a 2,000 sq ft lot zoned R6. City tax records list the owner as RIVERA, DAVID; per ACRIS, a deed to this owner dated July 9, 2010 lists a price of $393,000. The Department of Finance's final market value for tax year 2027 is $2,164,000. As of October 31, 2026, NYC Open Data shows two active DOB violations, one active ECB violation and 26 open HPD violations. There were four 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
RIVERA, DAVID
Building class
C0 · Three-family walk-up
Year built · units
1920 · 3 res.
Lot area · zoning
2,000 sq ft · R6
Market value (DOF)
$2,164,000 FY2027
Last priced deed
$393,000 · 2010-07-09
BBL
3034120036
BIN
3078887

How to cite: NYC Property Facts, “796 Knickerbocker Avenue, Brooklyn, NY 11207 (BBL 3034120036)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/796-knickerbocker-avenue-3034120036. 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)
RIVERA, DAVIDThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
C0 – Three-family walk-upThe Department of Finance’s category for what kind of building this is.
Land use
Multi-family walk-up buildingsCity Planning’s broad category of how the lot is used.
Year built
1920Often an estimate for older buildings.
Floors
3
Units
3 residential / 3 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
2,000 sq ft (20 ft × 100 ft)
Building floor area
3,600 sq ft
Zoning
R6The zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
1.80 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 3034120036 (Borough 3, Block 3412, Lot 36) · BIN 3078887BBL 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)
$2,164,000The 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
$129,840The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$18,440Assessed 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$2,164,000$129,8401
2026Final$1,696,000$101,7601
2025Final$1,461,000$87,6601

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
2010-07-09DEED$393,000Farley, Victor CRivera, David; Gonzalez, Jose A2010072300105001
1971-05-14DEED$0 / not statedGiambalvo Marguerite; Giambalvo Rose; Giambalvo EleanoraFarley Victor CarlsonBK_7130048101888
1968-06-10DEED$0 / not statedGiambalvo Eleanora (Ind & As Exec Of); Giambalvo Andrea (Deceased)Giambalvo Marguerite; Giambalvo Rose; Giambalvo EleanoraBK_6830074100496

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 0 open of 0

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.

No records found in this dataset for this lot.

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 0

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.

No records found in this dataset for this lot.

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 2 active of 2

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
2010-12-02AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATIONV120210AEUHAZ101235
Active
VW-VIOLATION WORK WITHOUT PERMIT - ACTIVE
2010-08-16C-CONSTRUCTION OTHER OPTIONALWORK W/OUT PERMITVW081610CAHEC01

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

ECB violations (DOB) 1 active of 1

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 · CERTIFICATE DISAPPROVED
2010-08-16CLASS - 1WORK W/O A PERMIT.NOTED:@ 2ND & 3RD FLR APTS INSTALLED NEW WASTE & WATER LINES.3RD FLR APPEARS COMPLETE,2ND FLR APPEARS 3/4 COMPLETE W/ WASTE LINE OPEN TO SEWER GASES.STOP ALL WORK-MAKE SAFE.OBTAIN APPROVAL & P$800 / $800 / $034859978Z

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

OATH tickets (all agencies) 0 unpaid of 30

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 #
No balance due
PAID IN FULL
2026-05-09Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETRIVERA DAVID$50 / $50 / $0049812295X
No balance due
PAID IN FULL
2025-04-03Sanitation OthersFAIL TO RECYCLE ORGANIC WASTE 1-8 DWELLING UNITS 1STRIVERA DAVID$25 / $25 / $0049088405N
No balance due
PAID IN FULL
2019-04-18Dos - Enforcement AgentsRECYC PLACED FOR COLLECTION W NON-RECYC 1 TO 8 DWELLING UNITSRIVERA$25 / $25 / $0045150317M
No balance due
PAID IN FULL
2017-12-27Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETRIVERA$100 / $100 / $00203523376
No balance due
PAID IN FULL
2013-01-09Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETRIVERA$100 / $100 / —0175487667
No balance due
PAID IN FULL · IN VIOLATION
2010-08-16Dept. Of BuildingsWORK WITHOUT A PERMITDAVID RIVERA$800 / $800 / —034859978Z
No balance due
HEARING COMPLETED · DISMISSED
2009-09-25Dos - Enforcement AgentsILLEGAL POSTING OF HANDBILL NOTICEPEOPLE FOR JOHN LIU— / — / —041832649L
No balance due
WRITTEN OFF · WRITTEN OFF
2009-09-25Dos - Enforcement AgentsILLEGAL POSTING OF HANDBILL NOTICENINA KIM-HA AS TREASURER OF PE$75 / $0 / $0043626102N
No balance due
HEARING COMPLETED · DISMISSED
2009-09-25Dos - Enforcement AgentsILLEGAL POSTING OF HANDBILL NOTICEPEOPLE FOR JOHN LIU— / — / —041832648J
No balance due
WRITTEN OFF · WRITTEN OFF
2009-09-25Dos - Enforcement AgentsILLEGAL POSTING OF HANDBILL NOTICENINA KIM-HA AS TREASURER OF PE$75 / $0 / $0043626103P
No balance due Default
PAID IN FULL · DEFAULTED
2008-06-06Sanitation PoliceDIRTY SIDEWALK DIRTY AREAFARLEY VICTOR CARLSON$300 / $339 / —040621959K
No balance due Default
PAID IN FULL · DEFAULTED
2008-04-23Sanitation PoliceFAILURE TO CLEAN 18 INCHES INTO STREETFARLEY VICTOR CARLSON$300 / $346 / —040651465H

Showing 12 of 30 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.

HPD building ID
321427
Last registered
2026-08-19
Registration valid until
2027-09-01 CurrentRegistrations must be renewed every year.
RoleNameCompanyBusiness city
JointownerDavid RiveraBrooklyn, Ny
JointownerJose GonzalesBrooklyn, Ny
AgentDavid RiveraBrooklyn, Ny

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 26 open of 35

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.

StatusClassIssuedAptCondition
Open
Nov Sent Out · 2026-05-05
A2026-05-05(A) § HMC: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.
Open
Nov Sent Out · 2025-06-10
A2025-06-10(A) § HMC: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.
Open
Nov Sent Out · 2008-06-10
B2008-06-10D26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE MORTAR CEMENT CEILING CELLAR FRONT.
Open
Nov Sent Out · 2008-06-10
B2008-06-103RD26-10.01 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF EXPOSED ELECTRICAL WIRE CLG FIXTURE CENTER ROOM 3 STY WEST APT 3R. LOCATED AT APT 3R
Open
Nov Sent Out · 2008-06-10
A2008-06-10SECTION 27-2048 ADM CODE PAINT OR POST A SIGN INDICATING FLOORS ON WALLS AT OR NEAR STAIRS ALL STYS PUBLIC HALLS.
Open
Nov Sent Out · 2008-06-10
B2008-06-10D26-10.01 ADM CODE FIRE ESCAPE DEFECTIVE. ADJUST THE DROPLADDER SO THAT IT WILL SLIDE EASILY IN THE GUIDE RODS REAR.
Open
Nov Sent Out · 2008-06-10
B2008-06-103RD26-13.03 ADM CODE ABATE THE NUISANCE CONSISTING OF VERMIN MICE & ROACHES 3 STY APT 3R. , SECTION '' ''
Open
Nov Sent Out · 2008-06-10
B2008-06-103SECTION 27-2005 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE OUTLET WEST WALL 3 STY APT 3 FRONT ROOM. LOCATED AT APT 3
Open
Nov Sent Out · 2008-06-10
A2008-06-10SECTION 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION CORNICE FRONT ROOF.
Open
Nov Sent Out · 2008-06-10
A2008-06-10SECTION 27-2045 ADM CODE POST A PROPER NOTICE OF SMOKE DETECTOR REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, AT OR NEAR THE MAIL BOX MISSING.
Open
Nov Sent Out · 2008-06-10
B2008-06-10D26-10.01 ADM CODE REPLACE WITH NEW THE MISSING HANDRAIL STAIR CELLAR REAR TO REAR YARD.
Open
Nov Sent Out · 2008-06-10
B2008-06-10SECTION 27-2005, 2007 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF HOUSEHOLD ARTICLES 1 STY PUBLIC HALL REAR.
Open
Nov Sent Out · 2008-06-10
B2008-06-10SECTION 27-2005, 2007 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF HOUSEHOLD ARTICLES 3 STY PUBLIC HALL.
Open
Nov Sent Out · 2008-06-10
C2008-06-10SECTION 27-2033 ADM CODE PROVIDE READY ACCESS TO BUILDINGS HEATING SYSTEM CELLAR DOOR LOCKED.
Open
Nov Sent Out · 2008-06-10
C2008-06-10SECTION 27-2033 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM 1 STY PUBLIC HALL & ON BOILER ROOM DOOR.
Open
Nov Sent Out · 2008-06-10
A2008-06-10D26-10.01 ADM CODE REFIT ENTRANCE DOOR 3 STY APT.
Open
Nov Sent Out · 2008-06-10
B2008-06-102LSECTION 27-2005 ADM CODE PROPERLY SECURE THE LOOSE LIGHT FIXTURE WALL 2 STY SOUTH APT 2L FOYER. , SECTION '' ''
Open
Nov Sent Out · 2008-06-10
B2008-06-10D26-10.01 ADM CODE ABATE THE NUISANCE CONSISTING OF HOUSEHOLD ITEMS STORED CELLAR THROUGHOUT.
Open
Nov Sent Out · 2008-06-10
B2008-06-10SECTION 27-2039 ADM CODE PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS INCANDESCENT OR EQUIVALENT ILLUMINATION 1 STY PUBLIC HALL.
Open
Nov Sent Out · 2008-06-10
B2008-06-10SECTION 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING BULKHEAD TO ROOF 3 STY PUBLIC HALL.

Showing 20 of 35 records — open violations are listed first; the API lists every one. The API and the source dataset have the full list.

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) 4

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
2026-05-17NYPDNoise - Street/Sidewalk – Loud Music/PartyClosed2026-05-17
2026-05-16NYPDNoise - Street/Sidewalk – Loud Music/PartyClosed2026-05-16
2026-05-16NYPDNoise - Street/Sidewalk – Loud Music/PartyClosed2026-05-16
2026-05-16NYPDNoise - Street/Sidewalk – Loud Music/PartyClosed2026-05-16

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 (3412)

All properties on Knickerbocker Ave, Brooklyn · All of Brooklyn 11207 (East New York-New Lots)

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