Alteration filingSep 30
DOB filing B01408278-S1
Alteration filing at 421 Hart Street
Under review$10,000 recorded cost
Open filing Building record · BIN 3043058
421 Hart Street
421 Hart Street, Brooklyn, NY 11221
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 7 independently sourced records, including 7 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3043058
421 Hart Street
Bedford-Stuyvesant (East), Brooklyn
A consolidated public-record view · updated Sep 30, 2026
- DOB filings
- 7
- Active-status
- 7
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings7
Open or active-status records7
First included filingJan 30, 2019
Latest recorded changeSep 30, 2026
The lot
What is already here?
The lot holds a 2-story two-family home built in 1899, on a 2,000 sq ft lot.
- Floor 2Homes2 homes are recorded on this lot — about 2 homes to a floor, and the apartments assessed on this block run to a typical 636 sq ft (59 m²). The city does not publish which floor any of them is on.
- Floor 1Street levelStreet level. The lot is recorded as one and two family homes.
- Street levelOne and two family homes
- Homes2 recorded · typically 59 m² · valued $117,444
- Above the southern skylineFrom about floor 6 — the tallest thing within 60 m to the south is 16.5 m
- Built
- 1899
- Last altered
- 2015
- Floors
- 2
- Residential units
- 2
- Building type
- Two-family home
- Land use
- One and two family homes
- Zoning district
- C4-4L
- Lot area
- 2,000 sq ft
- Building area
- 2,160 sq ft
Housing violations
43 violations are open against this address under the Housing Maintenance Code. 8 of them are the class the city calls immediately hazardous.
- 8Immediately hazardous
- 33Hazardous
- 0Non-hazardous
- 2Information 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
32 condominium apartments are assessed on this block, and the typical one is 636 sq ft (59 m²). They run from 59 to 105 m².
The city values the typical one at $117,444. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
Owner of record
1022 BROADWAY LLC
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 Oct 3, 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?
The Department of Buildings has 8 open notices on record for this building, out of 10 notices on file; the most recent was issued Apr 13, 2022.
- Fail to certify class
Issued Apr 13, 2022 — FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION
- Construction
Issued Nov 14, 2019
- Construction
Issued Nov 14, 2019
5 further open notices are on file. Open the source dataset for the full list.
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 3043058. 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 3 under review, 4 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Jan 30, 2019
- Latest recorded change
- Sep 30, 2026
- Highest proposed story count
- Not stated
- Highest proposed unit count
- 9 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
Proposed installation of heavy duty sidewalk shed for remedial repairs as per plans. no change in use occupancy or egress under this application. live load 300 per square feet. sidewalk shed shall comply with chapter # 33 of the 2014 code. Filing B00124225-I1.
- Permit recorded for alteration02
DOB lists a first permit date for B00124225-I1. That is not by itself confirmation of activity on site.
- Alteration filed03
Installation of sidewalk shed as per plans. no change in use, egress or occupancy. Filing B00247221-I1.
- Alteration filed04
Installation of pipe scaffold as per plans. no change in use, egress or occupancy. Filing B00247229-I1.
- Alteration approved05
Filing B00247221-I1 reached an approved status.
- Alteration approved06
Filing B00247229-I1 reached an approved status.
- Alteration now approved07
The latest status recorded for B00247221-I1 is “Approved.”
- Alteration now approved08
The latest status recorded for B00247229-I1 is “Approved.”
- Alteration now approved09
The latest status recorded for B00124225-I1 is “Permit Entire.”
- Alteration filed010
Mechanical work filed in conjunction with the ALT-I application in BIS 321253558-06. Filing B01408278-S1.
- Alteration filed011
Plumbing \ Sprinkler work filed in conjunction to the ALT-I application in BIS 321253558-06. Filing B01408278-I1.
- Alteration filed012
Support of Excavation in conjunction with the ALT-I application in BIS 321253558-06. Filing B01408705-I1.
- Alteration filed013
Foundation \ Earthwork in conjunction with the ALT-I application filed in BIS 321253558. Filing B01408705-S4.
- Alteration approved014
Filing B01408705-I1 reached an approved status.
- Alteration now approved015
The latest status recorded for B01408705-I1 is “Approved.”
- Alteration now under review016
The latest status recorded for B01408705-S4 is “Objections.”
- Alteration now under review017
The latest status recorded for B01408278-I1 is “Objections.”
- Alteration now under review018
The latest status recorded for B01408278-S1 is “Objections.”