151 Prospect Avenue, Brooklyn, NY 11215
BBL 3010510055 (Borough 3, Block 1051, Lot 55) · BIN 3024096 · Last updated: · Park Slope · ZIP 11215
Summary · as of November 6, 2026
151 Prospect Avenue (Brooklyn, NY 11215; tax lot BBL 3010510055) is a 3-unit walk-up apartment building (building class C0: three-family walk-up), built around 2015, on a 1,716 sq ft lot zoned R6B. City tax records list the owner as YAM, SAU YUNG; the most recent deed with a stated price is dated August 1, 2012 at $340,000 (per ACRIS). The Department of Finance's final market value for tax year 2027 is $3,500,000. As of November 6, 2026 (limited by DOB Job Application Filings (BIS); other open-item sources were confirmed later), 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
- YAM, SAU YUNG
- Building class
- C0 · Three-family walk-up
- Year built · units
- 2015 · 3 res.
- Lot area · zoning
- 1,716 sq ft · R6B
- Market value (DOF)
- $3,500,000 FY2027
- Last priced deed
- $340,000 · 2012-08-01
- BBL
- 3010510055
- BIN
- 3024096
- 0Open DOB jobs (permit issued, no sign-off)
- 0Active DOB violations
- 0Active ECB violations
- 0Open HPD violations
- 0OATH tickets with unpaid balance
How to cite: NYC Property Facts, “151 Prospect Avenue, Brooklyn, NY 11215 (BBL 3010510055)”, data as of 2026-11-06, https://nycpropertyfacts.com/ny/brooklyn/151-prospect-avenue-3010510055. 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)
- YAM, SAU YUNGThe 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
- 2015Often an estimate for older buildings. Major alteration recorded: 2014.
- Floors
- 4
- Units
- 3 residential / 3 totalResidential units are apartments; total includes stores and offices.
- Buildings on lot
- 1
- Lot size
- 1,716 sq ft (25 ft × 67.42 ft)
- Building floor area
- 3,426 sq ft
- Zoning
- R6BThe zoning district sets what can be built and used here. Residential district.
- Built vs. allowed density (FAR)
- 2.00 built / 2.00 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 3010510055 (Borough 3, Block 1051, Lot 55) · BIN 3024096BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).
Agency lookups: DOB BIS · ZoLa (zoning map) · ACRIS
Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; last loaded 2026-11-07; Building Footprints — city dataset updated 2026-10-25; last loaded 2026-11-01
Tax assessment
How the Department of Finance values this lot for property tax.
- Market value (tax year 2027, final roll)
- $3,500,000The 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
- $210,000The portion of market value that taxes are calculated on (capped by law for small homes).
- Taxable value (final)
- $146,424Assessed value minus any exemptions.
- Tax class
- Tax class 1 – 1–3 family homes (and some small mixed-use / vacant lots)
| Tax year | Roll | Market value | Assessed value | Tax class |
|---|---|---|---|---|
| 2027 | Final | $3,500,000 | $210,000 | 1 |
| 2026 | Final | $3,590,000 | $215,400 | 1 |
| 2025 | Final | $2,869,000 | $172,140 | 1 |
Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; last loaded 2026-11-07
Sales & deed history 8
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.
| Date | Type | Price | Seller (grantor) | Buyer (grantee) | Doc ID |
|---|---|---|---|---|---|
| 2022-05-20 | DEED | $0 / not stated | Yam, Sau Yung; Chan, Lung Wan | Yam, Sau Yung | 2022052300189001 |
| 2020-02-26 | DEED | $0 / not stated | Ac Greenfield Realty & Management Llc | Chan, Lung Wan; Yam, Sau Yung | 2020030300193001 |
| 2012-08-01 | DEED | $340,000 | Bruce L. Stein, As Public Administrator; The Estate Of Felix Shaar | Ac Greenfield Realty & Management Llc | 2012080300597001 |
| 1987-12-14 | DEED | $0 / not stated | Williams, Mal Jerome | Shaar, Felix | FT_3850001328585 |
| 1981-12-08 | DEED | $0 / not stated | Johnson, James J. Jr | Williams, Mal Jerome | FT_3660000894866 |
| 1975-03-04 | DEED | $0 / not stated | Piccolo Salvatore | Johnson James J Jr | BK_7530076601244 |
| 1973-11-29 | DEED | $0 / not stated | Palma Isabel; Muscatel Pasquale Sole Heirs & Distributees; Woods Margaret; Muscatel Michael Decd | Picolo Salvatore | BK_7330067500227 |
| 1971-04-26 | DEED | $0 / not stated | Woods Margaret; Palma Isabel; Muscatel Pasquale | Muscatel Michael | BK_7130047800149 |
Source: ACRIS Real Property Master — city dataset updated 2026-10-08; last loaded 2026-11-07; ACRIS Real Property Legals — city dataset updated 2026-10-08; last loaded 2026-11-07; ACRIS Real Property Parties — city dataset updated 2026-10-08; last loaded 2026-11-07
DOB job filings 0 open of 7
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.
| Status | Job # | Type | Filed | Est. cost |
|---|---|---|---|---|
| Not open SIGNED OFF · 2016-03-07 | 321176428 BIS | A2 – Alteration with multiple work types (no change to use/occupancy) | 2015-07-22 | $1,000 |
| Not open SIGNED OFF · 2015-12-15 | 340167465 BIS | A2 – Alteration with multiple work types (no change to use/occupancy) | 2014-07-21 | $1,000 |
| Not open SIGNED OFF · 2016-03-14 | 340124190 BIS | A3 – Minor alteration (one type of work) | 2014-03-05 | — |
| Not open APPLICATION PROCESSED - ENTIRE · 2013-12-01 | 340103195 BIS | A2 – Alteration with multiple work types (no change to use/occupancy) | 2013-12-01 | $1,000 |
| Not open SIGNED OFF · 2016-03-09 | 340103177 BIS | A3 – Minor alteration (one type of work) | 2013-12-01 | — |
| Not open SIGNED OFF · 2014-05-01 | 320877413 BIS | DM – Demolition | 2013-09-18 | — |
| Not open SIGNED OFF · 2016-04-11 | 320577096 BIS | NB – New building | 2013-08-20 | — |
Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-06; last loaded 2026-11-07; DOB Job Application Filings (BIS) — city dataset updated 2026-11-05; last loaded 2026-11-06; a later sync attempt failed on 2026-11-07; showing the last successful load
Work permits 13
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.
| Issued | Expires | Job # | Work | Permit status |
|---|---|---|---|---|
| 2015-09-16 | 2016-09-15 | 320577096 BIS | Plumbing / Plumbing | ISSUED (renewal) |
| 2015-07-23 | 2016-07-22 | 340167465 BIS | Equipment work / Sprinkler | ISSUED (initial) |
| 2015-06-19 | 2016-06-18 | 320577096 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (renewal) |
| 2015-06-12 | 2016-06-14 | 320577096 BIS | New building | RE-ISSUED (renewal) |
| 2014-09-16 | 2015-09-16 | 340124190 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (renewal) |
| 2014-09-11 | 2015-06-17 | 320577096 BIS | Foundation | ISSUED (initial) |
| 2014-09-11 | 2015-06-17 | 320577096 BIS | New building | ISSUED (initial) |
| 2014-09-11 | 2015-09-11 | 320577096 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (initial) |
| 2014-09-11 | 2015-09-11 | 320577096 BIS | Plumbing / Plumbing | ISSUED (initial) |
| 2014-09-11 | 2015-06-17 | 320577096 BIS | Foundation | ISSUED (initial) |
| 2014-03-06 | 2015-01-17 | 340124190 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (initial) |
| 2014-03-03 | 2014-08-27 | 320877413 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (initial) |
Showing 12 of 13 records. The API and the source dataset have the full list.
Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-06; last loaded 2026-11-07; DOB Permit Issuance (BIS) — city dataset updated 2026-11-07; last loaded 2026-11-07
DOB violations 0 active of 0
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).
No records found in this dataset for this lot.
Source: DOB Violations — city dataset updated 2026-11-06; last loaded 2026-11-07
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 2026-11-06; last loaded 2026-11-07
OATH tickets (all agencies) 0 unpaid of 13
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.
| Status | Date | Agency | Charge | Respondent | Imposed / paid / balance | Ticket # |
|---|---|---|---|---|---|---|
| No balance due PAID IN FULL · IN VIOLATION | 2022-03-07 | Pcs - Dohmh | FAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1ST | CHAN LUNG WAN | $300 / $300 / $0 | 0802197440 |
| No balance due PAID IN FULL · IN VIOLATION | 2018-05-11 | Dep - Bwso | FAILED TO SUBMIT AN ANNUAL TEST REPORT FOR A BACKFLOW PREVENTER | AC GREENFIELD REALTY MANAGEM | $50 / $50 / $0 | 0600015947 |
| No balance due PAID IN FULL · IN VIOLATION | 2013-11-30 | Dept Of Tran | FAILED TO SEAL EXPANSION JOINTS AS PER SUBSECTION | QMB PLUMBING HEATING INC | $250 / $250 / — | 0182714740 |
| No balance due PAID IN FULL | 2013-08-23 | Dept Of Tran | USE OPENING OF STREET W O PERMIT | KEYSPAN ENERGY DELIVERY N Y C | $1,500 / $254 / — | 0182619517 |
| No balance due PAID IN FULL · IN VIOLATION | 2013-08-17 | Dept Of Tran | USE OPENING OF PROTECTED STREET WITHOUT PERMIT | KEYSPAN ENERGY DELIVERY NYC | $5,000 / $1,710 / — | 0182595005 |
| No balance due HEARING COMPLETED · DISMISSED | 2012-09-06 | Dos - Enforcement Agents | LOOSE RUBBISH | AC GREENFIELD REALTY & MANAGEM | — / — / — | 041425749K |
| No balance due Default PAID IN FULL · DEFAULTED | 2012-08-27 | Dos - Enforcement Agents | IMPROPER DISPOSAL BEDDING 1ST OFFENSE | AC GREENFIELD REALTY & MANAGEM | $300 / $300 / — | 041414859H |
| No balance due Default PAID IN FULL · DEFAULTED | 2010-05-05 | Sanitation Others | DIRTY SIDEWALK/DIRTY AREA | SHAAR | $300 / $348 / — | 0172773050 |
| No balance due Default PAID IN FULL · DEFAULTED | 2010-03-04 | Sanitation Others | DIRTY SIDEWALK/DIRTY AREA | SHAAR | $300 / $355 / — | 0172133354 |
| No balance due Default PAID IN FULL · DEFAULTED | 2010-02-12 | Sanitation Others | SNOW,ICE & DIRT ON SIDEWALKS | SHAAR | $350 / $416 / — | 0172133290 |
| No balance due Default PAID IN FULL · DEFAULTED | 2009-09-15 | Sanitation Others | DIRTY SIDEWALK/DIRTY AREA | SHAAR | $300 / $368 / — | 0172771758 |
| No balance due Default PAID IN FULL · DEFAULTED | 2009-04-27 | Dos - Enforcement Agents | DIRTY SIDEWALK/DIRTY AREA | SHAAR | $300 / $375 / — | 042042050P |
Showing 12 of 13 records. The API and the source dataset have the full list.
Source: OATH Hearings Division Case Status — city dataset updated 2026-11-07; last loaded 2026-11-07
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
- 971807
- Last registered
- 2026-07-17
- Registration valid until
- 2027-09-01 CurrentRegistrations must be renewed every year.
| Role | Name | Company | Business city |
|---|---|---|---|
| Sitemanager | Sauyung Yam | ||
| Individualowner | Sauyung Yam | Brooklyn, Ny |
Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-11-04; last loaded 2026-11-07; HPD Registration Contacts — city dataset updated 2026-11-04; last loaded 2026-11-07
HPD housing-code violations 0 open of 7
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.
| Status | Class | Issued | Apt | Condition |
|---|---|---|---|---|
| Closed Violation Dismissed · 2026-05-12 | A | 2026-05-08 | (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. | |
| Closed Violation Dismissed · 2025-06-30 | A | 2025-06-13 | (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. | |
| Closed Violation Dismissed · 2023-05-08 | A | 2023-03-31 | (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. | |
| Closed Violation Dismissed · 2022-03-23 | A | 2022-03-10 | (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. | |
| Closed Violation Dismissed · 2021-05-05 | A | 2021-04-20 | (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. | |
| Closed Violation Dismissed · 2019-11-19 | I | 2019-11-06 | §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 · 2018-01-08 | I | 2017-12-11 | §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 |
Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-11-06; last loaded 2026-11-07
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 2026-11-07; last loaded 2026-11-07
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 2026-11-07; last loaded 2026-11-07
Nearby properties
Ordered by map distance among lots on this street within 40 house numbers and on this tax block within 15 lot numbers.
More in Park Slope: Open HPD violations · Active DOB violations · Active ECB violations · Open DOB jobs · Unpaid OATH tickets
Closest on Prospect Ave
- 149 Prospect Avenue (24 ft) (four open items)
- 153 Prospect Avenue (25 ft) (three open items)
- 155 Prospect Avenue (54 ft)
- 145 Prospect Avenue (58 ft)
- 157 Prospect Avenue (76 ft) (two open items)
- 143 Prospect Avenue (86 ft) (two open items)
Same tax block (1051), closest first
- Prospect Avenue (44 ft)
- Prospect Avenue (210 ft)
Open-item counts as of November 6, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs