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237 77th Street, Brooklyn, NY 11209

BBL 3059490066 (Borough 3, Block 5949, Lot 66) · BIN 3361165, 3149178 · Last updated:

Summary · as of October 31, 2026

237 77th Street (Brooklyn, NY 11209; tax lot BBL 3059490066) is a two-family home (building class B3: two-family home converted from one-family), built around 1910, on a 5,467 sq ft lot zoned R4A. City tax records list the owner as NG, KELVIN KUONG CHONG; per ACRIS, a deed to this owner dated October 16, 2017 lists a price of $2,000,000. The Department of Finance's final market value for tax year 2027 is $2,702,000. As of October 31, 2026, NYC Open Data shows no open DOB jobs, active DOB/ECB violations, open HPD violations or unpaid OATH tickets for this lot. There was one 311 request 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
NG, KELVIN KUONG CHONG
Building class
B3 · Two-family home converted from one-family
Year built · units
1910 · 2 res.
Lot area · zoning
5,467 sq ft · R4A
Market value (DOF)
$2,702,000 FY2027
Last priced deed
$2,000,000 · 2017-10-16
BBL
3059490066
BIN
3361165, 3149178

How to cite: NYC Property Facts, “237 77th Street, Brooklyn, NY 11209 (BBL 3059490066)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/237-77th-street-3059490066. 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)
NG, KELVIN KUONG CHONGThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
B3 – Two-family home converted from one-familyThe Department of Finance’s category for what kind of building this is.
Land use
One- & two-family buildingsCity Planning’s broad category of how the lot is used.
Year built
1910Often an estimate for older buildings. Major alteration recorded: 2019.
Floors
3
Units
2 residential / 2 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
2
Lot size
5,467 sq ft (50 ft × 109.33 ft)
Building floor area
3,656 sq ft
Zoning
R4A, BRThe zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
0.67 built / 1.00 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 3059490066 (Borough 3, Block 5949, Lot 66) · BIN 3361165, 3149178BBL 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 2026-11-02; Building Footprints — city dataset updated 2026-10-25; data as of 2026-11-01

Tax assessment

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

Market value (tax year 2027, final roll)
$2,702,000The 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
$162,120The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$98,789Assessed 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$2,702,000$162,1201
2026Final$2,269,000$136,1401
2025Final$2,579,000$154,7401

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-02

Sales & deed history 5

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
2017-10-16DEED$2,000,000Tiedemann, Doris; Tiedemann, JonathanNg, Kelvin Kuong Chong; Tong, Karen Minjing2017102701407001
2006-03-22DEED$0 / not statedTiedemann, JonathanTiedemann, Doris; Tiedemann, Jonathan2006041700785001
1999-06-30DEED$0 / not statedFalsey, Barbara; Falsey, Sarah Margaret; Falsey, Susan Marie; Falsey, ElizabethTiedemann, JonathanFT_3000006835000
1990-04-30DEED$0 / not statedFalsey, Mary TFalsey, Sarah Margaret; Falsey, Barbara; Falsey, Elizabeth; Falsey, Susan MarieFT_3150001546215
1988-10-05DEED$0 / not statedFalsey, Mary T; Falsey, Edward FFalsey, Mary TFT_3790001406979

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-02; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-02; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-02

DOB job filings 0 open of 4

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
Not open
SIGNED OFF · 2018-12-21
340578814
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2018-01-22$376,750
Not open
SIGNED OFF · 2019-05-22
320910555
BIS
A1 – Major alteration (changes use, egress or occupancy)2018-01-10$487,020
Not open
PLAN EXAM - APPROVED · 2017-12-15
340570322
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2017-12-15$55,000
Not open
SIGNED OFF · 2018-08-10
340569968
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2017-12-14$50,000

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-01; data as of 2026-11-02; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 5

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
2018-08-022019-04-04320910555
BIS
AlterationISSUED (initial)
2018-07-262019-07-26320910555
BIS
Construction equipment (scaffold, fence, shed) / Construction equipmentISSUED (initial)
2018-03-012019-03-01340578814
BIS
Plumbing / PlumbingISSUED (initial)
2018-02-272018-06-20340578814
BIS
Equipment work / Other / general constructionISSUED (initial)
2018-02-132018-06-20340569968
BIS
Equipment work / Other / general constructionISSUED (initial)

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-02; data as of 2026-11-02; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 0 active of 1

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
2018-01-24AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATIONV*012418AEUHAZ100508

Source: DOB Violations — city dataset updated 2026-11-02; data as of 2026-11-02

ECB violations (DOB) 0 active of 4

DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active or Resolved follows the DOB violation status field. The hearing status is about the hearing and its penalty: written off means the city stopped collecting the fine, not that the condition was corrected. A balance due is a fine the city says is unpaid.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Resolved
Hearing: CURED/IN-VIO · Certification: CURE ACCEPTED
2018-05-04CLASS - 2FAILURE TO MAINTAIN ADEQUATE HOUSKEEPING PER SECTION REQUIREMENTS; NOTED AT TIME OF INSPECTION OBSERVED CONSTRUCTION DEBRIS STORED AT FRON PORCH. RMDY: MAINTAIN ADEQUATE HOUSEKEEPING.$0 / $0 / $035327823N
Resolved
Hearing: WRITTEN OFF · Certification: CERTIFICATE ACCEPTED
Written off refers to the penalty, not the violation.
2017-10-27CLASS - 2RESIDENCE ALTERED FOR OCCUPANCY AS A DWELLING FOR MORE THAN THE LEGALLY APPROVED NUMBER OF FAMILIES. DEPT. OF BUILDING RECORDS INDICATES PREMISES TO BE LEGALLY APPROVED FOR A (1) FAMILY. ALTERATION WORK NOTED:$3,000 / $0 / $035291658R
Resolved
Hearing: WRITTEN OFF · Certification: CERTIFICATE ACCEPTED
Written off refers to the penalty, not the violation.
2017-10-27CLASS - 1WORK WITHOUT A PERMIT. WORK NOTED: AT CELLAR LEVEL CREATED FULL HEIGHT PARTITIONS FOR (2) ROOMS. INSTALLED WATER AND WASTE LINES FOR A (3) PIECE BATHROOM (TOILET, SINK, TUB) AND RESIDENTIAL SINK AT KITCHEN. INS$4,000 / $0 / $035291659Z
Resolved
Hearing: WRITTEN OFF · Certification: CERTIFICATE ACCEPTED
Written off refers to the penalty, not the violation.
2018-01-19CLASS - 1FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35291659Z ISSUED ON 10/27/17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. WOKR W/O PERMIT. NOTE AT CELLAR LEVEL CREATED FULL HEIGHT PARTI$6,000 / $0 / $035283005J

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-02

OATH tickets (all agencies) 0 unpaid of 8

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
HEARING COMPLETED · IN VIOLATION
2018-05-04Dept. Of BuildingsFAILURE TO MAINTAIN ADEQUATE HOUSEKEEPING PER SECTION REQUIREMENTSKELVIN KUONG CHONG NG$0 / $0 / $0035327823N
No balance due
HEARING COMPLETED · IN VIOLATION
2018-05-04Fire Department Of NycSTORAGE, ACCUMULATION AND REMOVAL OF COMBUSTIBLE MATERIAL AND WASTENG KELVIN KUONG CHONG$0 / $0 / $0011645711L
No balance due
WRITTEN OFF · WRITTEN OFF
2018-01-19Dept. Of BuildingsUNLAWFUL ACTS.FAILURE TO COMPLY WITH AN ORDER OF THE COMMISSIONERTIEDEMANN JONATHAN$6,000 / $0 / $0035283005J
No balance due
WRITTEN OFF · WRITTEN OFF
2017-10-27Dept. Of BuildingsRESIDENCE ALTERED FOR MORE THAN LEGALLY AUTHORIZED NUMBER OF FAMILIESTIEDEMANN$3,000 / $0 / $0035291658R
No balance due
WRITTEN OFF · WRITTEN OFF
2017-10-27Dept. Of BuildingsWORK WITHOUT A PERMITTIEDEMANN$4,000 / $0 / $0035291659Z
No balance due
PAID IN FULL · SETTL IN-VIO
2017-01-10Dos - Enforcement AgentsSNOW,ICE DIRT ON SIDEWALKSTIEDEMANN$350 / $232 / $0041576026P
No balance due
PAID IN FULL · SETTL IN-VIO
2012-01-11Dos - Enforcement AgentsSTORAGE OF RECEPTACLESTIEDEMANN$300 / $297 / $0041695034R
No balance due Default
PAID IN FULL · DEFAULT
2002-09-19$25 / $25 / —0131216847

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-02; data as of 2026-11-02

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 2026-11-02; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-02

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 2026-11-02; data as of 2026-11-02

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 2026-11-02; data as of 2026-11-02

311 requests (last 12 months) 1

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
2025-11-16NYPDIllegal Parking – Blocked HydrantClosed2025-11-16

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-02; data as of 2026-11-02

Nearby properties

On 77 St

Same tax block (5949)

All properties on 77 St, Brooklyn · All of Brooklyn 11209 (Bay Ridge)

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