Alteration filingJan 11
DOB filing B00488240-I1
Alteration filing at 4421 8 Avenue
Recorded as completed$33,000 recorded cost
Open filing Building record · BIN 3011411
4421 8 Avenue
4421 8 Avenue, Brooklyn, NY 11220
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 4 independently sourced records, including 2 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3011411
4421 8 Avenue
Sunset Park (East)-Borough Park (West), Brooklyn
A consolidated public-record view · updated Jan 11, 2022
- DOB filings
- 4
- Active-status
- 2
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings4
Open or active-status records2
First included filingMar 23, 2021
Latest recorded changeJan 11, 2022
The lot
What is already here?
The lot holds a 3-story mainly residential with some commercial built in 1926, on a 1,760 sq ft lot.
- Floors 2–3Homes2 homes are recorded on this lot — about one home to a floor, and the apartments assessed on this block run to a typical 594 sq ft (55 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
- Homes2 recorded · typically 55 m² · valued $236,401
- Above the southern skylineFrom about floor 12 — the tallest thing within 60 m to the south is 34.7 m
- Built
- 1926
- Floors
- 3
- Residential units
- 2
- Building type
- Mainly residential with some commercial
- Land use
- Mixed residential and commercial
- Zoning district
- R6
- Lot area
- 1,760 sq ft
- Building area
- 3,180 sq ft
The apartments
70 condominium apartments are assessed on this block, and the typical one is 594 sq ft (55 m²). They run from 46 to 99 m².
The city values the typical one at $236,401. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
What it sold for
3 apartments on this tax block changed hands in the year the city last published, at a median of $108,953, from 56,004 to 108,953.
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
ZHANG & YUAN, 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 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. 3 notices are 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 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 3011411. 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 2 recorded as completed, 2 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Mar 23, 2021
- Latest recorded change
- Jan 11, 2022
- Highest proposed story count
- 3 stories
- Highest proposed unit count
- 2 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 4 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Existing 2 family dwelling units, on cellar, 2nd fl, 3rd fl, install new plumbing fixtures. general construction file separate application job #b00486642-i1. no change in use, means egress or occupancy on this application. Filing B00488240-I1.
- Alteration filed02
Interior renovation for existing 2 family dwelling units on cellar, 2nd fl, 3rd fl. new partition and plumbing work. file plumbing separate application job# b00488240-i1. no change in use,means egress or occupancy to this application. Filing B00486642-I1.
- Alteration approved03
Filing B00488240-I1 reached an approved status.
- Permit recorded for alteration04
DOB lists a first permit date for B00488240-I1. That is not by itself confirmation of activity on site.
- Alteration approved05
Filing B00486642-I1 reached an approved status.
- Permit recorded for alteration06
DOB lists a first permit date for B00486642-I1. That is not by itself confirmation of activity on site.
- Alteration filed07
Interior renovation for existing 2 family dwelling units on cellar, 2nd fl, 3rd fl. new partition and plumbing work. file plumbing separate application job# b00488240-i1. no change in use,means egress or occupancy to this application. Filing B00486642-P1.
- Alteration approved08
Filing B00486642-P1 reached an approved status.
- Alteration now approved09
The latest status recorded for B00486642-P1 is “Approved.”
- Alteration signed off010
DOB recorded a sign-off for B00486642-I1.
- Alteration now completed011
The latest status recorded for B00486642-I1 is “LOC Issued.”
- Alteration filed012
Existing 2 family dwelling units, on cellar, 2nd fl, 3rd fl, install new plumbing fixtures. general construction file separate application job #b00486642-i1. no change in use, means egress or occupancy on this application. Filing B00488240-P1.
- Alteration approved013
Filing B00488240-P1 reached an approved status.
- Alteration now approved014
The latest status recorded for B00488240-P1 is “Approved.”
- Alteration signed off015
DOB recorded a sign-off for B00488240-I1.
- Alteration now completed016
The latest status recorded for B00488240-I1 is “LOC Issued.”