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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

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).

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 yearRollMarket valueAssessed valueTax class
2027Final$2,398,000$143,8801
2026Final$1,824,000$109,4401
2025Final$2,120,000$127,2001

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.

DateTypePriceSeller (grantor)Buyer (grantee)Doc ID
1985-10-21DEED$0 / not statedGong, Wood Tim; Gong, Lai Yu MuiMui, Chung Lai; Mui, Yin Yung Ling; Mui, Kam PoFT_3680001128568
1975-01-09DEED$0 / not statedMazzella 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 TimBK_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.

StatusJob #TypeFiledEst. cost
Permitted, not signed off
Permit Entire · 2026-08-28
B01236568-S1
DOB NOW
Alteration2025-07-03$76,000
Not open
Approved · 2026-04-10
B01236568-P1
DOB NOW
Alteration2026-04-09$76,000
Not open
On Hold - Pending Supersede of Applicant of Record · 2026-09-28
B01236568-P2
DOB NOW
Alteration2026-04-09$243,500
Not open
On Hold - Pending Supersede of Applicant of Record · 2026-09-28
B01236568-I1
DOB NOW
Alteration2025-06-18$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.

IssuedExpiresJob #WorkPermit status
2025-07-172026-07-17B01236568-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).

StatusIssuedTypeDescriptionNumber
Active
V-DOB VIOLATION - ACTIVE
2025-03-06C-CONSTRUCTION OTHER OPTIONALDOB SUMMONS ISSUED FOR STRUCTURE RENDERED NON COMPLIANT DUE TO EXTENSIVE FIRE, SMOKE AND WATER DAMAGE THROUGHOUT STRUCTUREV030625C25-00401

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.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Active
Hearing: PENDING
2026-08-13CLASS - 1AT 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 / $10,00039200442R

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.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
Unpaid balance Default
DOCKETED · DEFAULTED
2025-07-13Sanitation OthersDIRTY AREAMUI CHUNG LAI$300 / $0 / $300049187703P
Unpaid balance Default
DOCKETED · DEFAULTED
2022-08-10Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETMUI CHUNG LAI$300 / $0 / $300047450762H
Hearing pending
RESCHEDULED
2026-08-13Dept. Of BuildingsFAILURE TO OBEY A VACATE ORDER FROM THE COMMISSIONERMUI CHUNG LAI$10,000 / $0 / $10,000039200442R
No balance due
PAID IN FULL
2020-07-18Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETMUI CHUNG$100 / $100 / $00210861348
No balance due
HEARING COMPLETED · DISMISSED
2020-01-02Sanitation OthersLOOSE RUBBISHMUI CHUNG$0 / $0 / $00207279032
No balance due
PAID IN FULL
2019-09-21Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETMUI$100 / $100 / $00207279811
No balance due
PAID IN FULL
2019-06-10Dos - Enforcement AgentsNON-RECYC LEFT IN RECYC CONTAINER FOR COLLECTION 1TO8 DWELLING UNITSMUI$25 / $25 / $0042149649L
No balance due
PAID IN FULL
2018-05-07Dos - Enforcement AgentsFAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION 1TO8DWELLING UNITSMUI$25 / $25 / $0042159736Z
No balance due
WRITTEN OFF · WRITTEN OFF
2017-05-31Sanitation OthersFAILURE TO CLEAN 18 INCHES INTO STREETMOI$300 / $0 / $00195111108
No balance due
WRITTEN OFF · WRITTEN OFF
2016-04-21Dos - Enforcement AgentsRECYC PLACED FOR COLLECTION W NON-RECYC 1 TO 8 DWELLING UNITSMUI$25 / $0 / $0044610890N
No balance due
WRITTEN OFF · WRITTEN OFF
2015-04-14Sanitation OthersDIRTY SIDEWALK DIRTY AREAMUI$300 / $0 / $00186032395
No balance due
PAID IN FULL · IN VIOLATION
2012-05-30Sanitation PoliceDIRTY SIDEWALK/DIRTY AREAMUI$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.

OpenedAgencyComplaintStatusClosed
2026-09-04DOBGeneral Construction/Plumbing – Posted Notice Or Order Removed/Tampered WithClosed2026-10-30
2026-08-26DOBGeneral Construction/Plumbing – Failure to Comply with Vacate OrderClosed2026-08-27
2026-08-12DOBGeneral Construction/Plumbing – Failure to Comply with Vacate OrderClosed2026-08-13
2026-07-14DOBBuilding/Use – No Certificate Of Occupancy/Illegal/Contrary To COClosed2026-08-13

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

Same tax block (1009)

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