749 Knickerbocker Avenue, Brooklyn, NY 11221

Lot & building

Basic facts about the tax lot and building from the city’s PLUTO database.

Owner (as listed by the city)

ST MARTIN OF TOURS RCThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.

Building class

W2 – Educational building (subtype W2)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

1922Often an estimate for older buildings.

Floors

3

Units

0 residential / 0 totalResidential units are apartments; total includes stores and offices.

Buildings on lot

3

Lot size

20,200 sq ft (152 ft × 150 ft)

Building floor area

40,415 sq ft (incl. 40,415 sq ft commercial)

Zoning

R6The zoning district sets what can be built and used here. Residential district.

Built vs. allowed density (FAR)

2.00 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 3033990001 (Borough 3, Block 3399, Lot 1) · BIN 3326427, 3326430, 3326426BBL 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 2026-10-31; Building Footprints — city dataset updated 2026-10-25; data as of 2026-10-31

Tax assessment

How the Department of Finance values this lot for property tax.

Market value (tax year 2027, final roll)

$4,214,000The 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

$1,896,300The portion of market value that taxes are calculated on (capped by law for small homes).

Taxable value (final)

$1,896,300Assessed value minus any exemptions.

Tax class

Tax class 4 – commercial / industrial

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-10-31

Sales & deed history 0

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.

No records found in this dataset for this lot.

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-10-31; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-10-31; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-10-31

DOB job filings 6 open of 25

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.

Showing 20 of 25 records. The API and the source dataset have the full list.

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-10-30; data as of 2026-10-31; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 45

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.

Showing 12 of 45 records. The API and the source dataset have the full list.

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-10-30; data as of 2026-10-31; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 1 active of 44

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).

Showing 15 of 44 records. The API and the source dataset have the full list.

Source: DOB Violations — city dataset updated 2026-10-31; data as of 2026-10-31

ECB violations (DOB) 1 active of 5

DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active means the condition has not been certified as corrected and/or the case is not resolved. A balance due is a fine the city says is unpaid.

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-10-31

OATH tickets (all agencies) 3 unpaid of 92

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.

Showing 12 of 92 records. The API and the source dataset have the full list.

Source: OATH Hearings Division Case Status — city dataset updated 2026-10-31; data as of 2026-10-31

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 2026-10-28; data as of 2026-10-31; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-10-31

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 2026-10-31; data as of 2026-10-31

HPD complaints 2

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.

Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-10-31; data as of 2026-10-31

311 requests (last 12 months) 1

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.

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-10-31; data as of 2026-10-31

Nearby properties

On Knickerbocker Ave

• 750 Knickerbocker Avenue (three open items)
• 739 Knickerbocker Avenue (two open items)
• 735 Knickerbocker Avenue (63 open items)
• 733 Knickerbocker Avenue (10 open items)
• 730 Knickerbocker Avenue (five open items)
• 729 Knickerbocker Avenue (17 open items)
• 728 Knickerbocker Avenue (21 open items)
• 727 Knickerbocker Avenue (16 open items)
• 726 Knickerbocker Avenue (25 open items)
• 724 Knickerbocker Avenue (14 open items)

Same tax block (3399)

• 739 Knickerbocker Avenue (two open items)
• 735 Knickerbocker Avenue (63 open items)
• 1324 Hancock Street (20 open items)
• 1328 Hancock Street (four open items)
• 1330 Hancock Street (two open items)
• 1334 Hancock Street (six open items)
• 1336 Hancock Street (177 open items)
• 1340 Hancock Street (one open item)
• 1342 Hancock Street (three open items)
• 1346 Hancock Street (one open item)

All properties on Knickerbocker Ave, Brooklyn · All of Brooklyn 11221 (Bedford-Stuyvesant (East))