Alteration filingSep 16
DOB filing B01442465-P1
Alteration filing at 823 40 Street
Approved2 proposed stories
Open filing Building record · BIN 3017957
823 40 Street
823 40 Street, Brooklyn, NY 11232
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 4 independently sourced records, including 4 that are not recorded as completed, closed or withdrawn.
newyorkdailyStreet Futures
BUILDING RECORD · BIN 3017957
823 40 Street
Sunset Park (East)-Borough Park (West), Brooklyn
A consolidated public-record view · updated Sep 16, 2026
- DOB filings
- 4
- Active-status
- 4
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings4
Open or active-status records4
First included filingAug 13, 2026
Latest recorded changeSep 16, 2026
The lot
What is already here?
The lot holds a 2-story walk-up apartment building built in 1931, with 4 homes, on a 2,504 sq ft lot.
- Floor 2Homes4 homes are recorded on this lot — about 4 homes to a floor. The city does not publish which floor any of them is on.
- Floor 1Street levelStreet level. The lot is recorded as walk-up apartments.
- Street levelWalk-up apartments
- Homes4 recorded on the lot
- Above the southern skylineFrom about floor 7 — the tallest thing within 60 m to the south is 18.3 m
- Built
- 1931
- Last altered
- 1959
- Floors
- 2
- Residential units
- 4
- Building type
- Walk-up apartment building
- Land use
- Walk-up apartments
- Zoning district
- R6
- Lot area
- 2,504 sq ft
- Building area
- 3,444 sq ft
Housing violations
2 violations are open against this address under the Housing Maintenance Code.
- 0Immediately hazardous
- 2Hazardous
- 0Non-hazardous
- 0Information order
Open means the Department of Housing Preservation and Development has not recorded it as corrected, which is not the same as nobody having fixed it. The city publishes the apartment each was written against; that is not carried here, because a count says a building has a problem and an apartment number says whose.
What it sold for
The property itself last changed hands for $1,581,000 on Jul 21, 2026.
Recorded sale prices from the Department of Finance’s rolling file, covering the year to Aug 31, 2026. Transfers under $10,000 are left out: New York records deed transfers between relatives at a dollar, and those are not sales. No apartment number and no name is carried from either side.
Owner of record
NI REALTY GROUP LLC
As the assessment roll records it. Only owners that read as a company are shown here; where the roll names an individual, nothing is published.
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 19, 2026. They describe the tax lot, not any single filing. When the rest of New York went up
Violation record
Are there open violations here?
No open violations are recorded for this building.
Open means the agency has not recorded a resolution, which is not the same as the problem still existing. What a violation is, and what it is not. From NYC Department of Buildings, DOB Violations (3h2n-5cm9), accessed Sep 18, 2026.
What is recorded here
Multiple filings, one stable building identifier.
New York City's Building Identification Number helps connect filings that may use different application numbers or describe different scopes of work. The records below are grouped because they publish BIN 3017957. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 4 alteration filing. Its latest status categories are 4 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Aug 13, 2026
- Latest recorded change
- Sep 16, 2026
- Highest proposed story count
- 2 stories
- Highest proposed unit count
- 4 dwelling units
Highest recorded values may come from different filings and must not be combined into one proposed project. Open the individual filings below for their exact scope. Values outside the publication's conservative data-quality bounds are withheld pending source review.
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Recorded history
What has happened at this address?
Every dated event the city has published for this building, from all 4 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Interior renovation at cellar and 1st floor of existing 2-story building with general construction work as per plans filed herewith. related plumbing work will be filed subsequently. no change in use, egress or certificate of occupancy. Filing B01442465-I1.
- Alteration approved02
Filing B01442465-I1 reached an approved status.
- Alteration filed03
Plumbing work at existing 2-story building as per plans filed herewith. no change in use, egress or c of o. Filing B01444625-I1.
- Permit recorded for alteration04
DOB lists a first permit date for B01442465-I1. That is not by itself confirmation of activity on site.
- Alteration approved05
Filing B01444625-I1 reached an approved status.
- Permit recorded for alteration06
DOB lists a first permit date for B01444625-I1. That is not by itself confirmation of activity on site.
- Alteration now approved07
The latest status recorded for B01444625-I1 is “Permit Entire.”
- Alteration filed08
Remove and replace existing wood floor and roof framing with new cold-formed steel joists as shown on plans. no change in use, egress or occupancy. Filing B01454403-I1.
- Alteration approved09
Filing B01454403-I1 reached an approved status.
- Permit recorded for alteration010
DOB lists a first permit date for B01454403-I1. That is not by itself confirmation of activity on site.
- Alteration now approved011
The latest status recorded for B01454403-I1 is “Permit Entire.”
- Alteration filed012
Interior renovation at cellar and 1st floor of existing 2-story building with general construction work as per plans filed herewith. related plumbing work will be filed subsequently. no change in use, egress or certificate of occupancy. Filing B01442465-P1.
- Alteration approved013
Filing B01442465-P1 reached an approved status.
- Alteration now approved014
The latest status recorded for B01442465-P1 is “Approved.”
- Alteration now approved015
The latest status recorded for B01442465-I1 is “Permit Entire.”