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3407 Avenue U, Brooklyn, NY 11234

BBL 3085340007 (Borough 3, Block 8534, Lot 7) · BIN 3241474 · Last updated:

Summary · as of November 5, 2026

3407 Avenue U (Brooklyn, NY 11234; tax lot BBL 3085340007) is an one-family home (building class A2: one-family home, one story), built around 1940, on a 2,200 sq ft lot zoned R4. City tax records list the owner as MAUREEN ANN BROLLY. The Department of Finance's final market value for tax year 2027 is $809,000. 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
MAUREEN ANN BROLLY
Building class
A2 · One-family home, one story
Year built · units
1940 · 1 res.
Lot area · zoning
2,200 sq ft · R4
Market value (DOF)
$809,000 FY2027
Last priced deed
—
BBL
3085340007
BIN
3241474

How to cite: NYC Property Facts, “3407 Avenue U, Brooklyn, NY 11234 (BBL 3085340007)”, data as of 2026-11-05, https://nycpropertyfacts.com/ny/brooklyn/3407-avenue-u-3085340007. 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)
MAUREEN ANN BROLLYThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
A2 – One-family home, one storyThe 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
1940Often an estimate for older buildings.
Floors
1
Units
1 residential / 1 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
2,200 sq ft (22 ft × 100 ft)
Building floor area
1,694 sq ft
Zoning
R4The zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
0.77 built / 1.00 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 3085340007 (Borough 3, Block 8534, Lot 7) · BIN 3241474BBL 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)
$809,000The 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
$48,540The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$34,526Assessed 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$809,000$48,5401
2026Final$929,000$55,7401
2025Final$789,000$47,3401

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
2019-07-29DEED, LE$0 / not statedBrolly, Maureen Ann; Brolly, James JosephMaureen A. Brolly Trust; Maureen Ann Brolly, As Trustee2019080200544002
2004-11-16DEED$0 / not statedBrolly, James JosephBrolly, Maureen A; F/K/A Maureen Ann Coonan; Brolly, James Joseph2004111602038001
2004-02-10DEED$0 / not statedF/K/A Maureen Ann Coonan; Brolly, Maureen AnnBrolly, James Joseph2004021201218001
1974-02-26DEED$0 / not statedCoonan Joseph; Coonan FlorenceCoonan Maureen ABK_7430069301250
1973-06-15DEED$0 / not statedMccloskey John FCoonan Florence; Coonan JosephBK_7330063901521

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 0

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.

No records found in this dataset for this lot.

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 0

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.

No records found in this dataset for this lot.

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 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 2026-11-02; 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 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.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
No balance due
PAID IN FULL
2016-03-29Dos - Enforcement AgentsSTORAGE OF RECEPTACLESCENTURY 1 GROUP$100 / $100 / —041829030K

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 Ave U

Same tax block (8534)

All properties on Ave U, Brooklyn · All of Brooklyn 11234

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