Alteration filingSep 15
DOB filing B01227486-S2
Alteration filing at 9 Prospect Park West
Recorded as completed16 proposed stories
Open filing Building record · BIN 3024821
9 Prospect Park West
9 Prospect Park West, Brooklyn, NY 11215
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 7 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3024821
9 Prospect Park West
Park Slope, Brooklyn
A consolidated public-record view · updated Sep 15, 2026
- DOB filings
- 7
- Active-status
- 1
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings7
Open or active-status records1
First included filingOct 8, 2019
Latest recorded changeSep 15, 2026
The lot
What is already here?
The lot holds a 17-story elevator apartment building built in 1929, with 41 homes, on a 9,750 sq ft lot.
- Floors 6–17Above the southern skylineAbove the tallest building within sixty metres to the south, which stands 16.5 m. Nothing on that side reaches this floor.
- Floors 2–5Homes41 homes are recorded on this lot — about 3 homes to a floor, and the apartments assessed on this block run to a typical 1,081 sq ft (100 m²). The city does not publish which floor any of them is on.
- Floor 1Street levelStreet level. The lot is recorded as elevator apartments.
- Street levelElevator apartments
- Homes41 recorded · typically 100 m² · valued $500,566
- Above the southern skylineFrom about floor 6 — the tallest thing within 60 m to the south is 16.5 m
- Built
- 1929
- Last altered
- 2009
- Floors
- 17
- Residential units
- 41
- Building type
- Elevator apartment building
- Land use
- Elevator apartments
- Zoning district
- R8X
- Lot area
- 9,750 sq ft
- Building area
- 120,000 sq ft
Housing violations
27 violations are open against this address under the Housing Maintenance Code. 1 of them is the class the city calls immediately hazardous.
- 1Immediately hazardous
- 7Hazardous
- 19Non-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.
The apartments
54 condominium apartments are assessed on this block, and the typical one is 1,081 sq ft (100 m²). They run from 43 to 246 m².
The city values the typical one at $500,566. 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 $1,675,000, from 645,000 to 2,672,906.
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
111-115 APT CORP
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 18, 2026. They describe the tax lot, not any single filing. When the rest of New York went up
On the market here
One home at this address is currently listed for sale by Coldwell Banker. Prices move; the brokerage’s own page is the one that is current, and every row here links to it.
| Unit | Rooms | Size | Price | Per sq ft | Listed by |
|---|---|---|---|---|---|
| Unit 9AFor sale | Price not read | Coldwell Banker |
Read from the brokerages’ own published listings on October 2, 2026. A home drops off this table the next time they publish a list without it — usually because it sold or let, though a listing can also expire or be withdrawn. What we know is that it is no longer offered, which is why this shows what they have today rather than what we were told once. Everything on the market across the city.
Violation record
Are there open violations here?
The Department of Buildings has 1 open notice on record for this building, out of 49 notices on file; the most recent was issued Aug 16, 1993.
- Local law 62/91 - boilers
Issued Aug 16, 1993
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 17, 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 3024821. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 7 alteration filing. Its latest status categories are 6 recorded as completed, 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Oct 8, 2019
- Latest recorded change
- Sep 15, 2026
- Highest proposed story count
- 17 stories
- Highest proposed unit count
- 44 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 7 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Modification to existing plumbing system to add plumbing fixtures. Filing B00196220-I1.
- Alteration approved02
Filing B00196220-I1 reached an approved status.
- Alteration filed03
Modification of existing HVAC ductwork. Filing B00196213-I1.
- Alteration approved04
Filing B00196213-I1 reached an approved status.
- Permit recorded for alteration05
DOB lists a first permit date for B00196220-I1. That is not by itself confirmation of activity on site.
- Alteration filed06
Steel column replacement as per plans submitted herewith. no change in use, occupancy or egress. Filing B00403208-I1.
- Alteration approved07
Filing B00403208-I1 reached an approved status.
- Alteration filed08
Installation of temporary heavy duty sidewalk shed as per plans. no change in use, egress or occupancy. sidewalk shed shall comply with chapter #33 of the NYC building code. live load 300 psf. Filing B00429322-I1.
- Permit recorded for alteration09
DOB lists a first permit date for B00429322-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration010
DOB lists a first permit date for B00403208-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration011
DOB lists a first permit date for B00196213-I1. That is not by itself confirmation of activity on site.
- Alteration filed012
Installation of temporary heavy duty sidewalk shed as per plans. no change in use, egress or occupancy. sidewalk shed shall comply with chapter #33 of the NYC building code. live load 300 psf. Filing B00429322-P1.
- Alteration approved013
Filing B00429322-P1 reached an approved status.
- Alteration now approved014
The latest status recorded for B00429322-P1 is “Approved.”
- Alteration signed off015
DOB recorded a sign-off for B00196220-I1.
- Alteration now completed016
The latest status recorded for B00196220-I1 is “LOC Issued.”
- Alteration signed off017
DOB recorded a sign-off for B00403208-I1.
- Alteration now completed018
The latest status recorded for B00403208-I1 is “LOC Issued.”
- Alteration signed off019
DOB recorded a sign-off for B00429322-I1.
- Alteration now completed020
The latest status recorded for B00429322-I1 is “LOC Issued.”
- Alteration signed off021
DOB recorded a sign-off for B00196213-I1.
- Alteration now completed022
The latest status recorded for B00196213-I1 is “LOC Issued.”
- Alteration filed023
Select interior renovation of existing apartment 15b, including renovationof kitchen and one bathroom. demo and construct non-bearing interior partitions and finishes. no change to use, egress or occupancy. Filing B01227486-I1.
- Alteration filed024
Plumbing work filed in conjunction with partial renovation of ex. apt. 15b. renovation of existing bathroom and kitchen. no chnage in use, occupancy or egress. Filing B01227486-S2.
- Alteration approved025
Filing B01227486-I1 reached an approved status.
- Alteration approved026
Filing B01227486-S2 reached an approved status.
- Permit recorded for alteration027
DOB lists a first permit date for B01227486-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration028
DOB lists a first permit date for B01227486-S2. That is not by itself confirmation of activity on site.
- Alteration signed off029
DOB recorded a sign-off for B01227486-I1.
- Alteration now completed030
The latest status recorded for B01227486-I1 is “LOC Issued.”
- Alteration signed off031
DOB recorded a sign-off for B01227486-S2.
- Alteration now completed032
The latest status recorded for B01227486-S2 is “LOC Issued.”