232 9th Street, Brooklyn, NY 11215
BBL 3010090025 (Borough 3, Block 1009, Lot 25) · BIN 3022234 · Last updated:
Summary · as of October 31, 2026
232 9th Street (Brooklyn, NY 11215; tax lot BBL 3010090025) is a two-family home (building class B3: two-family home converted from one-family), built around 1899, on a 1,550 sq ft lot zoned R6A. City tax records list the owner as MUI, CHUNG LAI. The Department of Finance's final market value for tax year 2027 is $2,398,000. As of October 31, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off, one active DOB violation, one active ECB violation and two OATH tickets with an unpaid balance. There were four 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
- MUI, CHUNG LAI
- Building class
- B3 · Two-family home converted from one-family
- Year built · units
- 1899 · 2 res.
- Lot area · zoning
- 1,550 sq ft · R6A
- Market value (DOF)
- $2,398,000 FY2027
- Last priced deed
- —
- BBL
- 3010090025
- BIN
- 3022234
- 1Open DOB jobs (permit issued, no sign-off)
- 1Active DOB violations
- 1Active ECB violations
- 0Open HPD violations
- 2OATH tickets with unpaid balance
How to cite: NYC Property Facts, “232 9th Street, Brooklyn, NY 11215 (BBL 3010090025)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/232-9th-street-3010090025. 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)
- MUI, CHUNG LAIThe 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
- 1899Often an estimate for older buildings.
- Floors
- 2
- Units
- 2 residential / 2 totalResidential units are apartments; total includes stores and offices.
- Buildings on lot
- 1
- Lot size
- 1,550 sq ft (20 ft × 77.5 ft)
- Building floor area
- 1,920 sq ft
- Zoning
- R6AThe zoning district sets what can be built and used here. Residential district.
- Built vs. allowed density (FAR)
- 1.24 built / 3.00 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 3010090025 (Borough 3, Block 1009, Lot 25) · BIN 3022234BBL 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 2026-11-04; 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)
- $2,398,000The 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
- $143,880The portion of market value that taxes are calculated on (capped by law for small homes).
- Taxable value (final)
- $33,234Assessed 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 | $2,398,000 | $143,880 | 1 |
| 2026 | Final | $1,824,000 | $109,440 | 1 |
| 2025 | Final | $2,120,000 | $127,200 | 1 |
Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-04
Sales & deed history 2
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 |
|---|---|---|---|---|---|
| 1985-10-21 | DEED | $0 / not stated | Gong, Wood Tim; Gong, Lai Yu Mui | Mui, Chung Lai; Mui, Yin Yung Ling; Mui, Kam Po | FT_3680001128568 |
| 1975-01-09 | DEED | $0 / not stated | Mazzella J,Oseph (Devisees Under); Mazzella, Vincenza (Decd); Mazzella, Concetta L (Devisees Under); Mazzella ,Anthony R (Devisees Under) | Mui, Chung Lai; Mui, Yin Yung Ling; Gong, Lai Yu Mui; Gong, Wood Tim | BK_7530075700380 |
Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-04; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-04; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-04
DOB job filings 1 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.
| Status | Job # | Type | Filed | Est. cost |
|---|---|---|---|---|
| Permitted, not signed off Permit Entire · 2026-08-28 | B01236568-S1 DOB NOW | Alteration | 2025-07-03 | $76,000 |
| Not open Approved · 2026-04-10 | B01236568-P1 DOB NOW | Alteration | 2026-04-09 | $76,000 |
| Not open On Hold - Pending Supersede of Applicant of Record · 2026-09-28 | B01236568-P2 DOB NOW | Alteration | 2026-04-09 | $243,500 |
| Not open On Hold - Pending Supersede of Applicant of Record · 2026-09-28 | B01236568-I1 DOB NOW | Alteration | 2025-06-18 | $243,500 |
Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-01; data as of 2026-11-04; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31
Work permits 1
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 |
|---|---|---|---|---|
| 2025-07-17 | 2026-07-17 | B01236568-S1 DOB NOW | Plumbing FILE PLUMBING WORK IN CONJUNCTION WITH GC APPLICATION. NO CHANGE IN EGRESS, USE OR OCCUPANCY. | Signed-off |
Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-02; data as of 2026-11-04; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31
DOB violations 1 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).
| Status | Issued | Type | Description | Number |
|---|---|---|---|---|
| Active V-DOB VIOLATION - ACTIVE | 2025-03-06 | C-CONSTRUCTION OTHER OPTIONAL | DOB SUMMONS ISSUED FOR STRUCTURE RENDERED NON COMPLIANT DUE TO EXTENSIVE FIRE, SMOKE AND WATER DAMAGE THROUGHOUT STRUCTURE | V030625C25-00401 |
Source: DOB Violations — city dataset updated 2026-11-02; data as of 2026-11-04
ECB violations (DOB) 1 active of 1
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.
| Status | Issued | Severity | What it was for | Penalty / paid / balance | ECB # |
|---|---|---|---|---|---|
| Active Hearing: PENDING | 2026-08-13 | CLASS - 1 | AT TIME OF INSPECTION, OBSERVED A FAMILY REOCCUPY THE BUILDING WITH ACTIVE VACATE ORDER #B116/25 FAILING TO OBEY THE COMMISSIONER ORDER., COMPLY WITH VACATE ORDER; COMPLY WITH VACATE ORDER | $10,000 / $0 / $10,000 | 39200442R |
Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-04
OATH tickets (all agencies) 2 unpaid of 14
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 # |
|---|---|---|---|---|---|---|
| Unpaid balance Default DOCKETED · DEFAULTED | 2025-07-13 | Sanitation Others | DIRTY AREA | MUI CHUNG LAI | $300 / $0 / $300 | 049187703P |
| Unpaid balance Default DOCKETED · DEFAULTED | 2022-08-10 | Sanitation Others | FAILURE TO CLEAN 18 INCHES INTO STREET | MUI CHUNG LAI | $300 / $0 / $300 | 047450762H |
| Hearing pending RESCHEDULED | 2026-08-13 | Dept. Of Buildings | FAILURE TO OBEY A VACATE ORDER FROM THE COMMISSIONER | MUI CHUNG LAI | $10,000 / $0 / $10,000 | 039200442R |
| No balance due PAID IN FULL | 2020-07-18 | Sanitation Others | FAILURE TO CLEAN 18 INCHES INTO STREET | MUI CHUNG | $100 / $100 / $0 | 0210861348 |
| No balance due HEARING COMPLETED · DISMISSED | 2020-01-02 | Sanitation Others | LOOSE RUBBISH | MUI CHUNG | $0 / $0 / $0 | 0207279032 |
| No balance due PAID IN FULL | 2019-09-21 | Sanitation Others | FAILURE TO CLEAN 18 INCHES INTO STREET | MUI | $100 / $100 / $0 | 0207279811 |
| No balance due PAID IN FULL | 2019-06-10 | Dos - Enforcement Agents | NON-RECYC LEFT IN RECYC CONTAINER FOR COLLECTION 1TO8 DWELLING UNITS | MUI | $25 / $25 / $0 | 042149649L |
| No balance due PAID IN FULL | 2018-05-07 | Dos - Enforcement Agents | FAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION 1TO8DWELLING UNITS | MUI | $25 / $25 / $0 | 042159736Z |
| No balance due WRITTEN OFF · WRITTEN OFF | 2017-05-31 | Sanitation Others | FAILURE TO CLEAN 18 INCHES INTO STREET | MOI | $300 / $0 / $0 | 0195111108 |
| No balance due WRITTEN OFF · WRITTEN OFF | 2016-04-21 | Dos - Enforcement Agents | RECYC PLACED FOR COLLECTION W NON-RECYC 1 TO 8 DWELLING UNITS | MUI | $25 / $0 / $0 | 044610890N |
| No balance due WRITTEN OFF · WRITTEN OFF | 2015-04-14 | Sanitation Others | DIRTY SIDEWALK DIRTY AREA | MUI | $300 / $0 / $0 | 0186032395 |
| No balance due PAID IN FULL · IN VIOLATION | 2012-05-30 | Sanitation Police | DIRTY SIDEWALK/DIRTY AREA | MUI | $100 / $100 / — | 040505161N |
Showing 12 of 14 records. The API and the source dataset have the full list.
Source: OATH Hearings Division Case Status — city dataset updated 2026-11-02; data as of 2026-11-04
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 2026-11-04; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-04
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 2026-11-04
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 2026-11-04
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.
| Opened | Agency | Complaint | Status | Closed |
|---|---|---|---|---|
| 2026-09-04 | DOB | General Construction/Plumbing – Posted Notice Or Order Removed/Tampered With | Closed | 2026-10-30 |
| 2026-08-26 | DOB | General Construction/Plumbing – Failure to Comply with Vacate Order | Closed | 2026-08-27 |
| 2026-08-12 | DOB | General Construction/Plumbing – Failure to Comply with Vacate Order | Closed | 2026-08-13 |
| 2026-07-14 | DOB | Building/Use – No Certificate Of Occupancy/Illegal/Contrary To CO | Closed | 2026-08-13 |
Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-04; data as of 2026-11-04
Nearby properties
On 9 St
- 230 9th Street (one open item)
- 234 9th Street (two open items)
- 235 9th Street (three open items)
- 229 9th Street (seven open items)
- 228 9th Street
- 236 9th Street
- 237 9th Street (11 open items)
- 226 9th Street
- 238 9th Street (one open item)
- 239 9th Street (22 open items)
Same tax block (1009)
- 3 Avenue (eight open items)
- 463 3rd Avenue (eight open items)
- 461 3rd Avenue (two open items)
- 459 3rd Avenue (34 open items)
- 455 3rd Avenue (36 open items)
- 200 9th Street (one open item)
- 202 9th Street (33 open items)
- 204 9th Street
- 208 9th Street
- 210 9th Street
All properties on 9 St, Brooklyn · All of Brooklyn 11215 (Park Slope)
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