Alteration filingJul 16
DOB filing B00488623-I1
Alteration filing at 9820 Seaview Avenue
Approved2 proposed stories
Open filing Building record · BIN 3331441
9820 Seaview Avenue
9820 Seaview Avenue, Brooklyn, NY 11236
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 6 independently sourced records, including 6 that are not recorded as completed, closed or withdrawn.
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings6
Open or active-status records6
First included filingApr 20, 2021
Latest recorded changeJul 16, 2026
The lot
What is already here?
The lot holds a 8-story elevator apartment building built in 1950, with 1610 homes, on a 1,410,820 sq ft lot.
- Built
- 1950
- Last altered
- 2023
- Floors
- 8
- Residential units
- 1610
- Building type
- Elevator apartment building
- Land use
- Elevator apartments
- Zoning district
- R5
- Lot area
- 1,410,820 sq ft
- Building area
- 1,526,800 sq ft
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 1, 2026. They describe the tax lot, not any single filing.
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 3331441. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 6 alteration filing. Its latest status categories are 6 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Apr 20, 2021
- Latest recorded change
- Jul 16, 2026
- Highest proposed story count
- 2 stories
- Highest proposed unit count
- 1610 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 6 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Addition of 2 story mechanical/boiler enclosure. Filing B00488623-I1.
- Alteration filed02
Replace existing instantaneous domestic water heating station and all associated piping, controls, pumps, etc. in conjunction with new mechanical extension as per plans. Replace sump pump. Replace roof drains. Provide new floor drains. Filing B00488623-S5.
- Alteration filed03
Remove seven (7) existing 300 HP 3-pass low pressure steam scotch marine boilers and all associated piping, controls, and ancillary steam equipment as shown in drawings. Replace all associated piping, controls, ancillary steam equipment, etc. as shown. Filing B00488623-S2.
- Alteration filed04
Installation of micro-piles for reinforcement of existing structure and support of new second story addition and exterior stair. Installation of structural framing and supports associated with new second story addition and exterior stair. Filing B00488623-S1.
- Alteration approved05
Filing B00488623-S2 reached an approved status.
- Alteration approved06
Filing B00488623-S1 reached an approved status.
- Alteration approved07
Filing B00488623-S5 reached an approved status.
- Alteration approved08
Filing B00488623-I1 reached an approved status.
- Permit recorded for alteration09
DOB lists a first permit date for B00488623-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration010
DOB lists a first permit date for B00488623-S5. That is not by itself confirmation of activity on site.
- Alteration filed011
Installation of micro-piles for reinforcement of existing structure and support of new second story addition and exterior stair. Installation of structural framing and supports associated with new second story addition and exterior stair. Filing B00488623-P7.
- Alteration approved012
Filing B00488623-P7 reached an approved status.
- Alteration now approved013
The latest status recorded for B00488623-P7 is “Approved.”
- Permit recorded for alteration014
DOB lists a first permit date for B00488623-S2. That is not by itself confirmation of activity on site.
- Alteration now approved015
The latest status recorded for B00488623-S2 is “Permit Entire.”
- Alteration now approved016
The latest status recorded for B00488623-S5 is “Permit Entire.”
- Alteration now approved017
The latest status recorded for B00488623-S1 is “Approved.”
- Alteration filed018
Addition of 2 story mechanical/boiler enclosure. Filing B00488623-A2.
- Alteration now approved019
The latest status recorded for B00488623-I1 is “Permit Entire.”
- Alteration approved020
Filing B00488623-A2 reached an approved status.
- Alteration now approved021
The latest status recorded for B00488623-A2 is “Approved.”