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541 Knickerbocker Avenue, Brooklyn, NY 11221

BBL 3033260001 (Borough 3, Block 3326, Lot 1) · BIN 3076117 · Last updated:

Summary · as of October 31, 2026

541 Knickerbocker Avenue (Brooklyn, NY 11221; tax lot BBL 3033260001) is a 6-unit mixed-use building with apartments and ground-floor commercial space (building class S5: mixed-use: five- or six-family home with one store or office), built around 1931, on a 2,500 sq ft lot zoned R6. City tax records list the owner as SERLIN BUILDING LIMITED PARTNERSHIP; per ACRIS, a deed to this owner dated December 4, 2008 lists a price of $11,740,800 in a deed covering 10 lots. The Department of Finance's final market value for tax year 2027 is $1,121,000. As of October 31, 2026, NYC Open Data shows two DOB jobs with a permit issued but no sign-off, two open HPD violations and three OATH tickets with an unpaid balance. There were four 311 requests in the past 12 months and five HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
SERLIN BUILDING LIMITED PARTNERSHIP
Building class
S5 · Mixed-use: five- or six-family home with one store or office
Year built · units
1931 · 6 res.
Lot area · zoning
2,500 sq ft · R6
Market value (DOF)
$1,121,000 FY2027
Last priced deed
$11,740,800 · 2008-12-04
BBL
3033260001
BIN
3076117

How to cite: NYC Property Facts, “541 Knickerbocker Avenue, Brooklyn, NY 11221 (BBL 3033260001)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/541-knickerbocker-avenue-3033260001. 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)
SERLIN BUILDING LIMITED PARTNERSHIPThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
S5 – Mixed-use: five- or six-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
4
Units
6 residential / 7 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
2,500 sq ft (25 ft × 100 ft)
Building floor area
7,500 sq ft (incl. 1,875 sq ft commercial)
Zoning
R6The zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
3.00 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 3033260001 (Borough 3, Block 3326, Lot 1) · BIN 3076117BBL 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)
$1,121,000The 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
$504,450The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$208,145Assessed value minus any exemptions.
Tax class
Tax class 2B – residential rental, 7–10 units
Tax yearRollMarket valueAssessed valueTax class
2027Final$1,121,000$504,4502B
2026Final$1,134,000$510,3002B
2025Final$1,417,000$637,6502B

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

Sales & deed history 4

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
2008-12-04DEED$11,740,800
one deed covering 10 lots; price is for all of them
Neighborhood Partnership Houing Development FundSerlin Building Limited Partnership2008121000367001
2005-02-10DEED$18
one deed covering 18 lots; price is for all of them
The City Of New York; Department Of Housing Preservation And DevelopmentNeighborhood Partnership Hdfc, Inc.2005021300039001
1977-10-21DEED$0 / not stated
one deed covering 2656 lots; price is for all of them
Finance Administrator Of City Of New York; Finance Administration Of The City Of New York; Finance Administrator Of The City New York; Finance Administ Of The City Of Ny; Finance Admininstrator Of The City Of New York; Finance Admin Of The City Of New York; Finance Admin Of The City Of Ny; Finance Adiministrator Of The City Of New York; Commissioner Of Finance Of The City O Fnew York; Finance Administrator Of The City Of Ny; Finance Administrator Oft He City Of New York; Commmissioner Of Finance Of The City Of New York; Commissioner Of Finance Of The City Of New York; Finance Administrator Of Thecity Of New York; Finance Administrator Of City Of Ny; Finance Administrator Of Thec Ity Of New York; Finance Administrator For The City Of New York; Finance Administrator Of The City Of N Y; Finance Commissioner Of The City Of New York; Finance Administ Of The City Of New York; Finance Administrator Of The City Of New York; Finance Administrator Of The City Of Newyork; Finance Administrtor Of The City Of New York; Finance Administrator Of The City Of New York; Finance Administator Of The City Of New York; Fin City Of Ny; Commissioner Of Finance Of The City Of New Yor; Finance Administrator Of The City Of Newy Ork; Finance Adminstrator Of The City Of New York; Finance Admi Of The City Of New York; Finance Admin Of City Of NyThe City Of Ny; The City Of Ne Wyork; The City Of New Yor; City Of New York; The City Ofnew York; Th Ecity Of New York; City Of Ny; The City Of New York; The City Of New York; The City Of NewyorkBK_7730095201774
1967-05-19DEED$0 / not statedMontalbano Leonarda DecdMontalbano Leonard; Montalbano Jack; Montalbano GasperBK_6730042900454

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 2 open of 8

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 - ENTIRE JOB/WORK · 1995-05-25
300406193
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)1994-12-05—
Permitted, not signed off
PERMIT ISSUED - ENTIRE JOB/WORK · 1994-08-03
300381370
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)1994-08-01$12,000
Not open
SIGNED OFF · 2013-03-22
320688074
BIS
A1 – Major alteration (changes use, egress or occupancy)2012-12-17$2,000
Not open
SIGNED OFF · 2008-12-18
310279551
BIS
A1 – Major alteration (changes use, egress or occupancy)2008-07-31$10,000
Not open
SIGNED OFF · 2008-07-11
301932773
BIS
A3 – Minor alteration (one type of work)2005-04-15—
Not open
SIGNED OFF · 2008-07-14
301760155
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2004-05-19$20,000
Not open
SIGNED OFF · 2008-07-14
301418516
BIS
A1 – Major alteration (changes use, egress or occupancy)2002-10-01$525,000
Not open
SIGNED OFF · 2001-06-15
301072023
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2000-08-16$18,000

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 16

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
2013-01-042014-01-04320688074
BIS
AlterationISSUED (initial)
2008-10-232009-10-23310279551
BIS
Plumbing / PlumbingISSUED (initial)
2008-10-082009-10-08310279551
BIS
AlterationISSUED (initial)
2008-05-082009-05-08301418516
BIS
Plumbing / PlumbingISSUED (renewal)
2007-05-112008-05-10301418516
BIS
Plumbing / PlumbingISSUED (initial)
2007-03-292008-04-01301932773
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (renewal)
2007-03-292008-04-01301418516
BIS
AlterationISSUED (renewal)
2007-03-082007-04-01301418516
BIS
AlterationISSUED (initial)
2007-03-062007-04-01301932773
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (initial)
2005-07-052006-07-05301760155
BIS
Plumbing / PlumbingISSUED (initial)
2005-07-052006-07-05301760155
BIS
Equipment work / SprinklerISSUED (initial)
2000-08-312000-09-13301072023
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (initial)

Showing 12 of 16 records. The API and the source dataset have the full list.

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 0 active of 5

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
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2008-01-03LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*010308LL629111515
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2006-01-06LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*010606LL629111449
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2002-03-26LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*032602LL629120493
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1995-08-29LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*082995LL629124124
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1994-07-25LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*072594LL629101643

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

ECB violations (DOB) 0 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 #
Resolved
DEFAULT · CERTIFICATE ACCEPTED
2015-05-29CLASS - 2EXIT DOOR NOT SELF CLOSING. SECOND MEANS OF EGRESS AT 1ST FL WHICH OPENS ONTO LINDEN STREET DOES NOT SELF CLOSE. NOTE: TILES AT EXTERIOR PREVENT DOOR FROM CLOSING. REMEDY: PROVIDE SELF CLOSURE &/OR REPAIR.$2,500 / $2,892 / $035120386X

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

OATH tickets (all agencies) 3 unpaid of 56

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
DOCKETED · DEFAULTED
2024-10-26Dos - Enforcement AgentsFAILURE TO CLEAN 18 INCHES INTO STREETSERLIN BUILDING LIMITED PARTNE$300 / $0 / $300048668767P
Unpaid balance Default
DOCKETED · DEFAULTED
2024-10-18Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETSERLIN BUILDING LIMITED PARTNE$300 / $0 / $300048671961X
Unpaid balance Default
DEFAULTED · DEFAULTED
2021-12-14Pcs - DohmhFAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1STSERLIN BUILDING LIMITED PARTNE$600 / $0 / $6000802135979
No balance due
PAID IN FULL
2026-07-25Sanitation OthersIMPROPER RECEPTACLE FAILURE TO CONTAINERIZE - RESIDENTIAL 1STSERLIN BUILDING LIMITED PARTNE$50 / $50 / $0049884235R
No balance due
HEARING COMPLETED · IN VIOLATION
2026-02-18Fire Department Of NycINSPECTION AND TESTINGSERLIN BLDG LP$0 / $0 / $0014231524P
No balance due
HEARING COMPLETED · IN VIOLATION
2026-02-18Fire Department Of NycINSPECTION AND TESTINGSERLIN BLDG LP$0 / $0 / $0014231540P
No balance due
PAID IN FULL
2025-07-12Sanitation OthersDIRTY SIDEWALKSERLIN BUILDING LIMITED PARTNE$50 / $50 / $0049276070Z
No balance due
PAID IN FULL
2025-03-29Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETSERLIN BUILDING LIMITED PARTNE$50 / $50 / $0049034714N
No balance due Default
PAID IN FULL · DEFAULTED
2025-01-31Dos - Enforcement AgentsIMPROPER RECEPTACLE FAILURE TO CONTAINERIZE - RESIDENTIAL 1STSERLIN BUILDING LIMITED PARTNE$300 / $300 / $0048848717P
No balance due
PAID IN FULL · SETTL IN-VIO
2024-09-13Dos - Enforcement AgentsDIRTY SIDEWALKSERLIN BUILDING LIMITED PARTNE$300 / $176 / $0048623350K
No balance due
PAID IN FULL
2024-03-21Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETSERLIN BUILDING LIMITED PARTNE$50 / $50 / $0048142994Z
No balance due
PAID IN FULL
2023-12-06Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETSERLIN BUILDING LIMITED PARTNE$50 / $50 / $0048080725J

Showing 12 of 56 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
321337
Last registered
2025-09-12
Registration valid until
2026-09-01 ExpiredRegistrations must be renewed every year.
RoleNameCompanyBusiness city
AgentMark BenitezDIRECT BUILDING MANAGEMENTStaten Island, Ny
SitemanagerStephanie Charlemagne
HeadofficerLinda VeraStaten Island, Ny
CorporateownerSERLIN BUILDING LPStaten Island, 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 2 open of 9

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 · 2009-02-09
A2009-02-094BSECTION 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT ALL PEELING PAINT SURFACES IN THE 1st ROOM FROM EAST AT SOUTH, THE 3rd ROOM FROM EAST AT SOUTH LOCATED AT APT 4B, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH
Open
Nov Sent Out · 2009-01-12
C2009-01-12SECTION 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 .... AT PUBLIC HALL, 1st STORY
Closed
Violation Dismissed · 2024-02-20
A2023-08-282B§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT AT CEILING IN THE PRIVATE HALLWAY LOCATED AT APT 2B, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH
Closed
Violation Dismissed · 2022-11-22
I2022-11-10§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISE
Closed
Violation Dismissed · 2021-09-28
B2021-06-113B§ 27-2026 ADM CODE REPAIR THE LEAKY AND/OR DEFECTIVE FAUCETS AT SINK IN THE KITCHEN LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH
Closed
Violation Dismissed · 2021-09-27
A2021-06-113B§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT ALL WALLS AND CEILING IN THE ENTIRE APARTMENT LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH
Closed
Violation Dismissed · 2021-09-27
A2021-06-113B§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE VINYL FLOOR TILE IN THE KITCHEN LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH
Closed
Violation Dismissed · 2021-09-27
A2021-06-113B§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT ALL WALLS AND CEILING IN THE KITCHEN LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH
Closed
Violation Dismissed · 2015-03-10
A2001-05-07SECTION 27-2098 ADM CODE FILE WITH THIS DEPARTMENT A REGISTRATION STATEMENT FOR BUILDING.

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

HPD complaints 5

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.

ReceivedStatusAptProblem(s)Outcome
2025-07-29CLOSE1FLSafety – Window Guard Broken/MissingHPD attempted to conduct an inspection in response to this complaint, but was unable to complete the inspection. Please submit a new service request with 311 if the condition still exists. For more in
2024-11-04CLOSEBLDGElectric – No LightingThe Department of Housing Preservation and Development contacted a tenant in the building and verified that the following conditions were corrected. The complaint has been closed. If the condition sti
2022-10-10CLOSEAPT3Heat/Hot Water – Entire BuildingThe Department of Housing Preservation and Development responded to a complaint of no heat or hot water and was advised by a tenant in the building that heat and hot water had been restored. If the co
2021-11-09CLOSEBLDGUnsanitary Condition – Garbage/Recycling StorageThe Department of Housing Preservation and Development inspected the following conditions. No violations were issued. The complaint has been closed.
2020-08-06CLOSE4AUnsanitary Condition – PestsThe Department of Housing Preservation and Development contacted an occupant of the apartment and verified that the following conditions were corrected. The complaint has been closed. If the condition

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
2026-03-23DSNYGraffiti – GraffitiOpen—
2026-03-13DEPWater System – Hydrant Defective (WC2)Closed2026-03-19
2026-01-12DEPNoise – Noise: Construction Before/After Hours (NM1)Closed2026-01-15
2025-12-29DOTStreet Condition – Defective HardwareClosed2026-01-06

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 (3326)

All properties on Knickerbocker Ave, Brooklyn · All of Brooklyn 11221 (Bedford-Stuyvesant (East))

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