399 Knickerbocker Avenue, Brooklyn, NY 11237

Lot & building

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

Owner (as listed by the city)

399 KNICKERBOCKER LLThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.

Building class

K4 – Store building (subtype K4)The Department of Finance’s category for what kind of building this is.

Land use

Mixed residential & commercialCity Planning’s broad category of how the lot is used.

Year built

1931Often an estimate for older buildings. Major alteration recorded: 1992, 2015.

Floors

3

Units

0 residential / 1 totalResidential units are apartments; total includes stores and offices.

Buildings on lot

1

Lot size

12,500 sq ft (125 ft × 100 ft)

Building floor area

42,500 sq ft (incl. 42,500 sq ft commercial)

Zoning

C4-3The zoning district sets what can be built and used here. Commercial district.

Built vs. allowed density (FAR)

3.40 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 3032690004 (Borough 3, Block 3269, Lot 4) · BIN 3074472, 3820298BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).

Official lookups: DOB BIS · ZoLa (zoning map) · ACRIS

Source: PLUTO (Dept. of City Planning) — dataset updated 2026-08-24, fetched 2026-10-31; Building Footprints — dataset updated 2026-10-25, fetched 2026-10-31

Tax assessment

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

Market value (tax year 2027, final roll)

$10,299,000The 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

$4,634,550The portion of market value that taxes are calculated on (capped by law for small homes).

Taxable value (final)

$3,729,330Assessed value minus any exemptions.

Tax class

Tax class 4 – commercial / industrial

Source: DOF Property Valuation and Assessment Data — dataset updated 2026-09-14, fetched 2026-10-31

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.

Source: ACRIS Real Property Master — dataset updated 2026-10-08, fetched 2026-10-31; ACRIS Real Property Legals — dataset updated 2026-10-08, fetched 2026-10-31; ACRIS Real Property Parties — dataset updated 2026-10-08, fetched 2026-10-31

DOB job filings 2 open of 35

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 35 records. See the source dataset for the full list.

Source: DOB NOW: Build – Job Application Filings — dataset updated 2026-10-30, fetched 2026-10-31; DOB Job Application Filings (BIS) — dataset updated 2026-10-30, fetched 2026-10-31

Work permits 46

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 46 records. See the source dataset for the full list.

Source: DOB NOW: Build – Approved Permits — dataset updated 2026-10-30, fetched 2026-10-31; DOB Permit Issuance (BIS) — dataset updated 2026-10-31, fetched 2026-10-31

DOB violations 0 active of 18

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 18 records. See the source dataset for the full list.

Source: DOB Violations — dataset updated 2026-10-31, fetched 2026-10-31

ECB violations (DOB) 0 active of 8

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 — dataset updated 2026-10-31, fetched 2026-10-31

OATH tickets (all agencies) 38 unpaid of 104

Summonses heard at the Office of Administrative Trials and Hearings, from agencies like Sanitation, Buildings, Fire and Health, linked to this lot’s address. 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 104 records. See the source dataset for the full list.

Source: OATH Hearings Division Case Status — dataset updated 2026-10-31, fetched 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 — dataset updated 2026-10-28, fetched 2026-10-31; HPD Registration Contacts — dataset updated 2026-10-28, fetched 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 — dataset updated 2026-10-31, fetched 2026-10-31

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 — dataset updated 2026-10-31, fetched 2026-10-31

311 requests (last 12 months) 10

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 — dataset updated 2026-10-31, fetched 2026-10-31

Nearby properties

On Knickerbocker Ave

• 386 Knickerbocker Avenue (15 open items)
• 389 Knickerbocker Avenue (34 open items)
• 391 Knickerbocker Avenue (five open items)
• 398 Knickerbocker Avenue (44 open items)
• 402 Knickerbocker Avenue (six open items)
• 406 Knickerbocker Avenue (nine open items)
• 408 Knickerbocker Avenue (30 open items)
• 409 Knickerbocker Avenue (one open item)

Same tax block (3269)

• 227 Himrod Street (32 open items)
• 229 Himrod Street (five open items)
• 231 Himrod Street (34 open items)
• 233 Himrod Street (10 open items)
• 235 Himrod Street (16 open items)
• 237 Himrod Street (three open items)
• 239 Himrod Street (eight open items)
• 241 Himrod Street (33 open items)

All properties on Knickerbocker Ave · All of 11237 (Bushwick)