451 Ralph Avenue, Brooklyn, NY 11233
BBL 3014510001 (Borough 3, Block 1451, Lot 1) · BIN 3342380, 3844923 · Last updated:
Also recorded in city data as: 1393 1401 St Marks Ave
Summary · as of November 6, 2026
451 Ralph Avenue (Brooklyn, NY 11233; tax lot BBL 3014510001) is a health-care facility (building class I1: hospital or health facility (subtype I1)), built around 1994, on a 20,260 sq ft lot zoned R6. City tax records list the owner as NYS OFFICE OF MENTAL HEALTH. The Department of Finance's final market value for tax year 2027 is $1,563,000. As of November 6, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off. There were three 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
- NYS OFFICE OF MENTAL HEALTH
- Building class
- I1 · Hospital or health facility
- Year built · units
- 1994 · 0 res.
- Lot area · zoning
- 20,260 sq ft · R6
- Market value (DOF)
- $1,563,000 FY2027
- Last priced deed
- —
- BBL
- 3014510001
- BIN
- 3342380, 3844923
- 1Open 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, “451 Ralph Avenue, Brooklyn, NY 11233 (BBL 3014510001)”, data as of 2026-11-06, https://nycpropertyfacts.com/ny/brooklyn/451-ralph-avenue-3014510001. 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)
- NYS OFFICE OF MENTAL HEALTHThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
- Building class
- I1 – Hospital or health facility (subtype I1)The Department of Finance’s category for what kind of building this is.
- Land use
- Public facilities & institutionsCity Planning’s broad category of how the lot is used.
- Year built
- 1994Often an estimate for older buildings.
- Floors
- 1
- Units
- 0 residential / 1 totalResidential units are apartments; total includes stores and offices.
- Buildings on lot
- 1
- Lot size
- 20,260 sq ft (174.25 ft × 107.75 ft)
- Building floor area
- 7,758 sq ft (incl. 3,879 sq ft commercial)
- Zoning
- R6The zoning district sets what can be built and used here. Residential district.
- Built vs. allowed density (FAR)
- 0.38 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 3014510001 (Borough 3, Block 1451, Lot 1) · BIN 3342380, 3844923BBL 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; data as of 2026-11-06; 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)
- $1,563,000The 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
- $703,350The portion of market value that taxes are calculated on (capped by law for small homes).
- Taxable value (final)
- $703,350Assessed value minus any exemptions.
- Tax class
- Tax class 4 – commercial / industrial
| Tax year | Roll | Market value | Assessed value | Tax class |
|---|---|---|---|---|
| 2027 | Final | $1,563,000 | $703,350 | 4 |
| 2026 | Final | $1,525,000 | $686,250 | 4 |
| 2025 | Final | $1,503,000 | $676,350 | 4 |
Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-06
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.
| Date | Type | Price | Seller (grantor) | Buyer (grantee) | Doc ID |
|---|---|---|---|---|---|
| 1982-11-24 | DEED | $0 / not stated | Smith, Lawrence E | Hunt, Michael A | FT_3350000941035 |
| 1976-03-02 | DEED | $0 / not stated | City Of New York | Lawrence E Smith | BK_7630083201720 |
| 1968-04-09 | DEED | $0 / not stated one deed covering 569 lots; price is for all of them | Goodman Roy M Finance Admin Of; Goodman Roy M Finance Admin Of The City Of Ny; Finance Administrator Of The City Of New York; Dept Of Finance Of The City Of Ny; Goodman Roy M Finance Administrator Of Nyc; Finance Admin Of City Of Ny; Finance Admin Of N Y C; Finance Adminof The City Of Ny; Finance Admin Of The City Of N Y; Goodman Roy M Finance Admin Of The City Of N Y; Finance Admin Of City Of New York; Goodman Roy M As Finance Admin Of The City Of N Y; Goodman Roy M Finance Admin Of Nyc; Fin Admin Of Nyc; Goodman Roy M(Finance Admin Of); Goodman Roy M Finance Admin Of The City Of Newyork; The City Of N Y; Finance Admin Of The City Of Ny; Goodman Roy M; Goodman Roy M Finance Admin Of The City Of Ny; Goodman Roy M Finance Amdin Of The City Of Ny; Goodman Roy M (Finance Admin Of); Finance Admin Of Nyc; Goodman Roy M As Finance Administrator Of City Ny; Finance Admini Of Ny; Goodman Ray M; Finanace Admin Of The City Of New York; Finance Administrator Of Ny; Finance Admin Of The City Of Ny; Goodman Roy M (Finance Admin Of The City Of Ny); The City Of Ny; Goodman Roy M Finance Admin Of City Of Ny; The City Of New York; Goodman Roy M (As Comm Finance Admin; Finance Admin Of The City Of New York; Goodman Roy M As Finance Admin Of Nyc | City Of Ny; The City Of Ny; City Of N Y; The City Of N Y; The City Of New York; City Of New York | BK_6830069300208 |
Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-06; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-06; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-06
DOB job filings 1 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.
| Status | Job # | Type | Filed | Est. cost |
|---|---|---|---|---|
| Permitted, not signed off PERMIT ISSUED - ENTIRE JOB/WORK · 1994-01-21 | 300322210 BIS | DM – Demolition | 1994-01-21 | — |
Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-05; data as of 2026-11-06; DOB Job Application Filings (BIS) — city dataset updated 2026-11-05; data as of 2026-11-06
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.
| Issued | Expires | Job # | Work | Permit status |
|---|---|---|---|---|
| 1994-01-21 | 1995-01-01 | 300322210 BIS | Demolition | ISSUED (initial) |
| 1994-01-21 | 1994-12-31 | 300322210 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (initial) |
Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-05; data as of 2026-11-06; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31
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 2026-11-05; data as of 2026-11-06
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 2026-11-05; data as of 2026-11-06
OATH tickets (all agencies) 0 unpaid of 1
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 HEARING COMPLETED · DISMISSED | 2018-10-09 | Sanitation Others | IMPROPER DISPOSAL BEDDING 1ST OFFENSE | NYS OFFICE OF MENTAL HEALTH | $0 / $0 / $0 | 0205681576 |
Source: OATH Hearings Division Case Status — city dataset updated 2026-11-06; data as of 2026-11-06
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 2026-11-06; HPD Registration Contacts — city dataset updated 2026-11-04; data as of 2026-11-06
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 2026-11-06
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 2026-11-06; data as of 2026-11-06
311 requests (last 12 months) 3
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.
| Opened | Agency | Complaint | Status | Closed |
|---|---|---|---|---|
| 2026-07-18 | NYPD | Illegal Parking – Blocked Sidewalk | Closed | 2026-07-18 |
| 2026-07-18 | NYPD | Illegal Parking – Blocked Sidewalk | Closed | 2026-07-18 |
| 2026-07-16 | NYPD | Illegal Parking – Parking Permit Improper Use | Closed | 2026-07-16 |
Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-06; data as of 2026-11-06
Nearby properties
On Ralph Ave
- 455 Ralph Avenue (two open items)
- 456 Ralph Avenue
- 457 Ralph Avenue
- 444 Ralph Avenue (43 open items)
- 460 Ralph Avenue (25 open items)
- 440 Ralph Avenue (nine open items)
- 439 Ralph Avenue (one open item)
- 438 Ralph Avenue (nine open items)
- 464 Ralph Avenue (nine open items)
- 437 Ralph Avenue
Same tax block (1451)
- 439 Ralph Avenue (one open item)
- 437 Ralph Avenue
- 433a Ralph Avenue (two open items)
- 431 Ralph Avenue (16 open items)
- 429 Ralph Avenue (seven open items)
- 1814 Bergen Street (one open item)
- 398 Howard Avenue (12 open items)
- 400 Howard Avenue (two open items)
- 404 Howard Avenue (22 open items)
- 408 Howard Avenue (40 open items)
All properties on Ralph Ave, Brooklyn · All of Brooklyn 11233
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