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454 77th Street, Brooklyn, NY 11209

BBL 3059610025 (Borough 3, Block 5961, Lot 25) · BIN 3149838 · Last updated:

Summary · as of November 5, 2026

454 77th Street (Brooklyn, NY 11209; tax lot BBL 3059610025) 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 1899, on a 2,000 sq ft lot zoned R5B. City tax records list the owner as YOUMONA LLC; the most recent deed with a stated price is dated February 18, 2025 at $1,550,000 (per ACRIS). The Department of Finance's final market value for tax year 2027 is $1,580,000. As of November 5, 2026, NYC Open Data shows no open DOB jobs, active DOB/ECB violations, open HPD violations or unpaid OATH tickets for this lot. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
YOUMONA LLC
Building class
S2 · Mixed-use: two-family home with one store or office
Year built · units
1899 · 2 res.
Lot area · zoning
2,000 sq ft · R5B
Market value (DOF)
$1,580,000 FY2027
Last priced deed
$1,550,000 · 2025-02-18
BBL
3059610025
BIN
3149838

How to cite: NYC Property Facts, “454 77th Street, Brooklyn, NY 11209 (BBL 3059610025)”, data as of 2026-11-05, https://nycpropertyfacts.com/ny/brooklyn/454-77th-street-3059610025. 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)
YOUMONA LLCThe 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
1899Often 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
2,000 sq ft (20 ft × 100 ft)
Building floor area
2,892 sq ft (incl. 1,000 sq ft commercial)
Zoning
R5B, BRThe zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
1.45 built / 1.50 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 3059610025 (Borough 3, Block 5961, Lot 25) · BIN 3149838BBL 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 2026-11-05; 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)
$1,580,000The 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
$94,800The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$57,542Assessed 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$1,580,000$94,8001
2026Final$1,544,000$92,6401
2025Final$1,549,000$92,9401

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-05

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
2025-03-05DEED$0 / not statedHassan, Mona; Hassan, NassefYoumona Llc2025030700512001
2025-02-18DEED$1,550,000Rz Elite Group LlcHassan, Mona; Hassan, Nassef2025022600181001
2022-10-21DEED$1,388,000Nan, Lily; Nan, Andrew P; Nan, Andrew Ping ChuanRz Elite Group Llc2022102800275001
2005-03-22DEED$858,000Khalil, Mousa; Sunset Plumbing Supply, Inc.Nan, Andrew Ping Chuan; Nan, Lily2005032201651001
2003-01-21DEED$425,000Aragona, Estate Of George; Aragona, Executrix Of Estate, EileenSunset Plumbing Supply Inc.; Khalil, Mousa2003012202083001

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-05; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-05; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-05

DOB job filings 0 open of 1

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 · 2005-09-22
301930506
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2005-04-13$15,000

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-01; data as of 2026-11-05; DOB Job Application Filings (BIS) — city dataset updated 2026-11-04; data as of 2026-11-05

Work permits 2

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
2005-07-152005-12-12301930506
BIS
Equipment work / BoilerISSUED (initial)
2005-04-262006-04-26301930506
BIS
Plumbing / PlumbingISSUED (initial)

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-02; data as of 2026-11-05; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 0 active of 4

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
2009-12-31LBLVIO-LOW PRESSURE BOILER BOILER REQUIREDV*123109LBLVIO16740
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2007-01-19LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*011907LL629117686
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2007-01-19LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*011907LL629117687
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2007-01-19LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIREDV*011907LL629117688

Source: DOB Violations — city dataset updated 2026-11-02; data as of 2026-11-05

ECB violations (DOB) 0 active of 0

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.

No records found in this dataset for this lot.

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-05

OATH tickets (all agencies) 0 unpaid of 3

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 Default
PAID IN FULL · DEFAULTED
2011-11-29Dos - Enforcement AgentsSIDEWALK OBSTRUCTIONNAN$130 / $100 / —041493782R
No balance due
PAID IN FULL
2007-12-13Dos - Enforcement AgentsFAILURE TO PROPERLY PUT RECYCLABLES OUT FOR COLLECTIONNAN$25 / $25 / —042100548P
No balance due
PAID IN FULL
2002-09-09$50 / $150 / $-1000117004021

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-02; data as of 2026-11-05

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 2026-11-04; data as of 2026-11-05; HPD Registration Contacts — city dataset updated 2026-11-04; data as of 2026-11-05

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 2026-11-05; data as of 2026-11-05

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 2026-11-05; data as of 2026-11-05

311 requests (last 12 months) 0

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.

No records found in this dataset for this lot.

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-05; data as of 2026-11-05

Nearby properties

On 77 St

Same tax block (5961)

All properties on 77 St, Brooklyn · All of Brooklyn 11209

Open-item counts as of November 5, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs