Alteration filingAug 3
DOB filing B00228360-I1
Alteration filing at 309 Prospect Place
Recorded as completed$10,000 recorded cost
Open filing Building record · BIN 3028512
309 Prospect Place
309 Prospect Place, Brooklyn, NY 11238
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 2 independently sourced records, including 0 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3028512
309 Prospect Place
Prospect Heights, Brooklyn
A consolidated public-record view · updated Aug 3, 2021
- DOB filings
- 2
- Active-status
- 0
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings2
Open or active-status records0
First included filingFeb 21, 2020
Latest recorded changeAug 3, 2021
The lot
What is already here?
The lot holds a 4-story condominium built in 1931, with 4 homes, on a 2,322 sq ft lot.
- Floors 2–4Homes4 homes are recorded on this lot — about one home to a floor, and the apartments assessed on this block run to a typical 1,072 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 mixed residential and commercial, so this floor is where the commercial space is.
- Street levelMixed residential and commercial
- Homes4 recorded · typically 100 m² · valued $364,069
- Above the southern skylineFrom about floor 6 — the tallest thing within 60 m to the south is 15.2 m
- Built
- 1931
- Floors
- 4
- Residential units
- 4
- Building type
- Condominium
- Land use
- Mixed residential and commercial
- Zoning district
- R6B
- Lot area
- 2,322 sq ft
- Building area
- 5,289 sq ft
The apartments
81 condominium apartments are assessed on this block, and the typical one is 1,072 sq ft (100 m²). They run from 32 to 257 m².
The city values the typical one at $364,069. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
What it sold for
15 apartments on this tax block changed hands in the year the city last published, at a median of $1,725,000, from 550,000 to 4,999,169.
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
BEC CONTINUUM HOUSING DEVELOPMENT FUND C OMPANY INC
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 14, 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 |
|---|---|---|---|---|---|
| Whole buildingFor sale | Price not read | Coldwell Banker |
Read from the brokerages’ own published listings on October 4, 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?
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 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 3028512. 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 2 recorded as completed. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Feb 21, 2020
- Latest recorded change
- Aug 3, 2021
- Highest proposed story count
- Not stated
- 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 2 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Construction fence in conjunction with alt 1 321387593. Filing B00319865-I1.
- Permit recorded for alteration02
DOB lists a first permit date for B00319865-I1. That is not by itself confirmation of activity on site.
- Alteration filed03
CURBCUT FILING IN CONJUNCTION WITH BUILDING RENOVATION ALT 1 321387593 and BPP 321997693. Filing B00228360-I1.
- Alteration approved04
Filing B00228360-I1 reached an approved status.
- Permit recorded for alteration05
DOB lists a first permit date for B00228360-I1. That is not by itself confirmation of activity on site.
- Alteration signed off06
DOB recorded a sign-off for B00228360-I1.
- Alteration now completed07
The latest status recorded for B00228360-I1 is “LOC Issued.”
- Alteration signed off08
DOB recorded a sign-off for B00319865-I1.
- Alteration now completed09
The latest status recorded for B00319865-I1 is “LOC Issued.”