Alteration filingApr 22
DOB filing B00469945-I1
Alteration filing at 509 12 Street
Recorded as completed4 proposed stories
Open filing Building record · BIN 3325209
509 12 Street
509 12 Street, Brooklyn, NY 11215
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 4 independently sourced records, including 3 that are not recorded as completed, closed or withdrawn.
newyorkdailyStreet Futures
BUILDING RECORD · BIN 3325209
509 12 Street
Park Slope, Brooklyn
A consolidated public-record view · updated Apr 22, 2025
- DOB filings
- 4
- Active-status
- 3
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings4
Open or active-status records3
First included filingMay 20, 2021
Latest recorded changeApr 22, 2025
The lot
What is already here?
The lot holds a 4-story walk-up apartment building built in 1916, with 34 homes, on a 10,000 sq ft lot.
- Built
- 1916
- Floors
- 4
- Residential units
- 34
- Building type
- Walk-up apartment building
- Land use
- Walk-up apartments
- Zoning district
- R6B
- Lot area
- 10,000 sq ft
- Building area
- 30,047 sq ft
- Historic district
- Park Slope Historic District
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
Violation record
Are there open violations here?
No open violations are recorded for this building.
A violation is a notice the Department of Buildings recorded against the building. It is not a judgment, and many concern paperwork rather than safety. Open means the agency has not recorded a resolution, which is not the same as the problem still existing. 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 3325209. 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 1 recorded as completed, 3 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- May 20, 2021
- Latest recorded change
- Apr 22, 2025
- Highest proposed story count
- 4 stories
- Highest proposed unit count
- 17 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 509 12 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 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 apartment renovation. no change to use, egress, or occupancy. Filing B00469945-I1.
- Alteration approved02
Filing B00469945-I1 reached an approved status.
- Alteration filed03
Interior apartment renovation. no change to use, egress, or occupancy. Filing B00469945-P1.
- Alteration approved04
Filing B00469945-P1 reached an approved status.
- Alteration now approved05
The latest status recorded for B00469945-P1 is “Approved.”
- Permit recorded for alteration06
DOB lists a first permit date for B00469945-I1. That is not by itself confirmation of activity on site.
- Alteration filed07
Interior apartment renovation. no change to use, egress, or occupancy. Filing B00469945-P2.
- Alteration approved08
Filing B00469945-P2 reached an approved status.
- Alteration now approved09
The latest status recorded for B00469945-P2 is “Approved.”
- Alteration filed010
Interior apartment renovation. no change to use, egress, or occupancy. Filing B00469945-P3.
- Alteration approved011
Filing B00469945-P3 reached an approved status.
- Alteration now approved012
The latest status recorded for B00469945-P3 is “Approved.”
- Alteration signed off013
DOB recorded a sign-off for B00469945-I1.
- Alteration now completed014
The latest status recorded for B00469945-I1 is “LOC Issued.”