831 9th Avenue, Manhattan, NY 10019

Lot & building

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

Owner (as listed by the city)

55TH & 9THThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.

Building class

D7 – Elevator apartments, semi-fireproof, with storesThe 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

2004Often an estimate for older buildings.

Floors

18

Units

149 residential / 154 totalResidential units are apartments; total includes stores and offices.

Buildings on lot

1

Lot size

24,809 sq ft (101.42 ft × 100 ft)

Building floor area

170,440 sq ft (incl. 20,000 sq ft commercial)

Zoning

C6-2, R8, C1-5, CLThe zoning district sets what can be built and used here. Commercial district; the overlay (C1/C2…) allows local retail on residential blocks.

Built vs. allowed density (FAR)

6.87 built / 6.02 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 1010640036 (Borough 1, Block 1064, Lot 36) · BIN 1026797BBL 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 2026-11-07; 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)

$51,612,000The 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

$23,225,400The portion of market value that taxes are calculated on (capped by law for small homes).

Taxable value (final)

$21,192,660Assessed value minus any exemptions.

Tax class

Tax class 2 – residential, 4+ units

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-07

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.

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-07; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-07; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-07

DOB job filings 9 open of 72

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 72 records. The API and the source dataset have the full list.

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-06; data as of 2026-11-07; DOB Job Application Filings (BIS) — city dataset updated 2026-11-05; data as of 2026-11-06

Work permits 118

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 118 records. The API and the source dataset have the full list.

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-06; data as of 2026-11-07; DOB Permit Issuance (BIS) — city dataset updated 2026-11-07; data as of 2026-11-07

DOB violations 0 active of 28

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 28 records. The API and the source dataset have the full list.

Source: DOB Violations — city dataset updated 2026-11-06; data as of 2026-11-07

ECB violations (DOB) 0 active of 14

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.

Source: DOB ECB Violations — city dataset updated 2026-11-06; data as of 2026-11-07

OATH tickets (all agencies) 0 unpaid of 168

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 168 records. The API and the source dataset have the full list.

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-06; data as of 2026-11-06

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.

HPD building ID

840295

Last registered

2026-09-26

Registration valid until

2027-09-01 CurrentRegistrations must be renewed every year.

Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-11-04; data as of 2026-11-07; HPD Registration Contacts — city dataset updated 2026-11-04; data as of 2026-11-07

HPD housing-code violations 11 open of 21

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.

Showing 20 of 21 records — open violations are listed first; the API lists every one. The API and the source dataset have the full list.

Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-11-06; data as of 2026-11-07

HPD complaints 6

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 2026-11-07; data as of 2026-11-07

311 requests (last 12 months) 70

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.

Showing 10 of 70 records. The API and the source dataset have the full list.

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-07; data as of 2026-11-07

Nearby properties

More in Midtown-Times Square: Open HPD violations · Active DOB violations · Active ECB violations · Open DOB jobs · Unpaid OATH tickets

On 9 Ave

• 829 9th Avenue (117 open items)
• 828 9th Avenue (24 open items)
• 826 9th Avenue (39 open items)
• 824 9th Avenue (47 open items)
• 840a 9th Avenue (45 open items)
• 821 9th Avenue (four open items)
• 841 9th Avenue (six open items)
• 819 9th Avenue (12 open items)
• 817 9th Avenue (35 open items)
• 811 9th Avenue (46 open items)

Same tax block (1064)

• 812 10th Avenue (15 open items)
• 814 10th Avenue (20 open items)
• 818 10th Avenue (45 open items)
• 451 West 54th Street (six open items)
• 439 West 54th Street (50 open items)
• 437 West 54th Street (33 open items)
• 435 West 54th Street (22 open items)
• 433 West 54th Street (one open item)
• 431 West 54th Street (eight open items)
• 419 West 54th Street (six open items)

All properties on 9 Ave, Manhattan · All of Manhattan 10019