Alteration filingSep 17
DOB filing B01288252-I1
Alteration filing at 9 Willoughby Avenue
Recorded as completed$5,000 recorded cost
Open filing Building record · BIN 3430189
9 Willoughby Avenue
9 Willoughby Avenue, Brooklyn, NY 11205
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 7 independently sourced records, including 6 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3430189
9 Willoughby Avenue
Fort Greene, Brooklyn
A consolidated public-record view · updated Sep 17, 2026
- DOB filings
- 7
- Active-status
- 6
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings7
Open or active-status records6
First included filingFeb 23, 2021
Latest recorded changeSep 17, 2026
The lot
What is already here?
The lot holds a 4-story walk-up apartment building built in 1899, with 5 homes, on a 2,425 sq ft lot.
- Built
- 1899
- Last altered
- 2022
- Floors
- 4
- Residential units
- 5
- Building type
- Walk-up apartment building
- Land use
- Walk-up apartments
- Zoning district
- R6B
- Lot area
- 2,425 sq ft
- Building area
- 6,355 sq ft
- Historic district
- Fort Greene Historic District
The apartments
32 condominium apartments are assessed on this block, and the typical one is 1,118 sq ft (104 m²). They run from 78 to 226 m².
The city values the typical one at $663,104. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
Owner of record
M&L CHAN 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 21, 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. 1 notice is on file, all with a recorded resolution.
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 19, 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 3430189. 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 1 recorded as completed, 6 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Feb 23, 2021
- Latest recorded change
- Sep 17, 2026
- Highest proposed story count
- 3 stories
- Highest proposed unit count
- 5 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
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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
Filing herewith mechanical work for the building at the address listed. includes new vrf system(s), boiler, and kitchen, toilet & laundry exhaust systems. natural ventilation provided, refer to ot application drawings (architectural). Filing B00437895-I1.
- Alteration filed02
Filing for PL in conjunction with NB #321598856. Filing B00436218-I1.
- Alteration approved03
Filing B00437895-I1 reached an approved status.
- Alteration filed04
Structural and Foundation application in conjunction with NB application #321598856. Filing B00515117-I1.
- Alteration approved05
Filing B00436218-I1 reached an approved status.
- Alteration approved06
Filing B00515117-I1 reached an approved status.
- Permit recorded for alteration07
DOB lists a first permit date for B00515117-I1. That is not by itself confirmation of activity on site.
- Alteration filed08
SOE for NB Job #321598856. Filing B00515117-S1.
- Alteration approved09
Filing B00515117-S1 reached an approved status.
- Permit recorded for alteration010
DOB lists a first permit date for B00437895-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration011
DOB lists a first permit date for B00515117-S1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration012
DOB lists a first permit date for B00436218-I1. That is not by itself confirmation of activity on site.
- Alteration filed013
Structural and Foundation application in conjunction with NB application #321598856. Filing B00515117-P1.
- Alteration filed014
SOE for NB Job #321598856. Filing B00515117-P2.
- Alteration now approved015
The latest status recorded for B00515117-S1 is “Permit Entire.”
- Alteration approved016
Filing B00515117-P2 reached an approved status.
- Alteration now approved017
The latest status recorded for B00515117-P2 is “Approved.”
- Alteration approved018
Filing B00515117-P1 reached an approved status.
- Alteration now approved019
The latest status recorded for B00515117-P1 is “Approved.”
- Alteration filed020
Installation of temporary overhead/roof protection per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application. Filing B01288252-I1.
- Permit recorded for alteration021
DOB lists a first permit date for B01288252-I1. That is not by itself confirmation of activity on site.
- Alteration now approved022
The latest status recorded for B00437895-I1 is “Permit Entire.”
- Alteration now approved023
The latest status recorded for B00436218-I1 is “Permit Entire.”
- Alteration now approved024
The latest status recorded for B00515117-I1 is “Permit Entire.”
- Alteration signed off025
DOB recorded a sign-off for B01288252-I1.
- Alteration now completed026
The latest status recorded for B01288252-I1 is “LOC Issued.”