Alteration filingSep 29
DOB filing B01428156-I1
Alteration filing at 521 Dean Street
Approved4 proposed stories
Open filing Building record · BIN 3027629
521 Dean Street
521 Dean Street, Brooklyn, NY 11217
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 1 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.
newyorkdailyStreet Futures
BUILDING RECORD · BIN 3027629
521 Dean Street
Prospect Heights, Brooklyn
A consolidated public-record view · updated Sep 29, 2026
- DOB filings
- 1
- Active-status
- 1
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings1
Open or active-status records1
First included filingJul 14, 2026
Latest recorded changeSep 29, 2026
The lot
What is already here?
The lot holds a walk-up apartment building built in 1930, with 10 homes, on a 3,135 sq ft lot.
- Floors 2–6Homes10 homes are recorded on this lot — about 10 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
- Homes10 recorded on the lot
- Above the southern skylineFrom about floor 11 — the tallest thing within 60 m to the south is 31.7 m
- Built
- 1930
- Last altered
- 1990
- Residential units
- 10
- Building type
- Walk-up apartment building
- Land use
- Walk-up apartments
- Zoning district
- R6B
- Lot area
- 3,135 sq ft
- Building area
- 7,428 sq ft
Housing violations
1 violation is open against this address under the Housing Maintenance Code. 1 of them is the class the city calls immediately hazardous.
- 1Immediately hazardous
- 0Hazardous
- 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
6 apartments on this tax block changed hands in the year the city last published, at a median of $1,775,000, from 690,000 to 2,300,000.
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.
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Oct 2, 2026. They describe the tax lot, not any single filing. When the rest of New York went up
On the market here
2 homes at this address are currently listed for sale by Coldwell Banker and Douglas Elliman. 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 9For sale | Price not read | Coldwell Banker | |||
| Unit 9For sale | Price not read | Douglas Elliman |
Read from the brokerages’ own published listings on October 3, 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 5 notices on file; the most recent was issued Jul 25, 1994.
- Local law 62/91 - boilers
Issued Jul 25, 1994
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 Oct 2, 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 3027629. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 1 alteration filing. Its latest status categories are 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Jul 14, 2026
- Latest recorded change
- Sep 29, 2026
- Highest proposed story count
- 4 stories
- Highest proposed unit count
- 10 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.
Address alerts
Watch this address.
Get an email when NewYorkDaily detects a material change in the public DOB records associated with 521 Dean Street.
Confirmation is required. Alerts describe source-data changes, not confirmed construction activity. Unsubscribe at any time. Privacy
Recorded history
What has happened at this address?
Every dated event the city has published for this building, from all 1 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Extend existing chimney above roof to achieve code-compliant termination height. Install matching brick masonry, extend flue liner as required, and provide new concrete crown and chimney cap. No change in use, egress, occupancy, or floor area. Filing B01428156-I1.
- Alteration approved02
Filing B01428156-I1 reached an approved status.
- Alteration now approved03
The latest status recorded for B01428156-I1 is “Approved.”