Alteration filingAug 26
DOB filing B01248414-I1
Alteration filing at 1139 Prospect Avenue
Recorded as completed4 proposed stories
Open filing Building record · BIN 3121848
1139 Prospect Avenue
1139 Prospect Avenue, Brooklyn, NY 11218
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 2 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3121848
1139 Prospect Avenue
Windsor Terrace-South Slope, Brooklyn
A consolidated public-record view · updated Aug 26, 2026
- DOB filings
- 2
- Active-status
- 1
- Recorded addresses
- 2
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings2
Open or active-status records1
First included filingNov 6, 2019
Latest recorded changeAug 26, 2026
The lot
What is already here?
The lot holds a 4-story condominium built in 1990, with 55 homes, on a 33,476 sq ft lot.
- Floors 2–4Homes55 homes are recorded on this lot — about 18 homes to a floor, and the apartments assessed on this block run to a typical 1,030 sq ft (96 m²). 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
- Homes55 recorded · typically 96 m² · valued $120,570
- Above the southern skylineFrom about floor 5 — the tallest thing within 60 m to the south is 13.4 m
- Built
- 1990
- Floors
- 4
- Residential units
- 55
- Building type
- Condominium
- Land use
- Walk-up apartments
- Zoning district
- R5B
- Lot area
- 33,476 sq ft
- Building area
- 46,664 sq ft
The apartments
140 condominium apartments are assessed on this block, and the typical one is 1,030 sq ft (96 m²). They run from 41 to 161 m².
The city values the typical one at $120,570. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
What it sold for
7 apartments on this tax block changed hands in the year the city last published, at a median of $1,175,000, from 630,000 to 1,600,000.
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
NYC TRANSIT
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 1, 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?
The Department of Buildings has 19 open notices on record for this building, out of 77 notices on file; the most recent was issued Jun 30, 2023.
- Low pressure boiler
Issued Jun 30, 2023 — VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION
- Low pressure boiler
Issued Jun 30, 2023 — VIOLATION ISSUED-FAILURE TO FILE 2020 EXTERNAL LOW PRESSURE INSPECTION
- Low pressure boiler
Issued Jun 30, 2023 — VIOLATION ISSUED-FAILURE TO FILE 2020 EXTERNAL LOW PRESSURE INSPECTION
16 further open notices are on file. Open the source dataset for the full list.
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 14, 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 3121848. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 2 alteration filing. Its latest status categories are 1 recorded as completed, 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Nov 6, 2019
- Latest recorded change
- Aug 26, 2026
- Highest proposed story count
- 4 stories
- Highest proposed unit count
- 62 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 2 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Hereby filing for the replacement of existing boiler with a new cast iron gas fired atmospheric boiler level to serve building. connect boiler to existing gas, hws, and hwr piping as per plans filed herewith. no change to use, egress, or occupancy. Filing B00240397-I1.
- Alteration approved02
Filing B00240397-I1 reached an approved status.
- Alteration now approved03
The latest status recorded for B00240397-I1 is “Approved.”
- Alteration filed04
Interior renovation of apartment #2-e at second floor new sheetrock, re-lamination of walls, finish flooring, new interior doors, and new tiles. no change in use, egress or occupancy. Filing B01248414-I1.
- Alteration approved05
Filing B01248414-I1 reached an approved status.
- Permit recorded for alteration06
DOB lists a first permit date for B01248414-I1. That is not by itself confirmation of activity on site.
- Alteration signed off07
DOB recorded a sign-off for B01248414-I1.
- Alteration now completed08
The latest status recorded for B01248414-I1 is “LOC Issued.”