Alteration filingSep 22
DOB filing B01452362-I1
Alteration filing at 841 Union Street
Approved6 proposed stories
Open filing Building record · BIN 3019896
841 Union Street
841 Union Street, Brooklyn, NY 11215
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 1 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.
newyorkdailyStreet Futures
BUILDING RECORD · BIN 3019896
841 Union Street
Park Slope, Brooklyn
A consolidated public-record view · updated Sep 22, 2026
- DOB filings
- 1
- Active-status
- 1
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings1
Open or active-status records1
First included filingSep 15, 2026
Latest recorded changeSep 22, 2026
The lot
What is already here?
The lot holds a 7-story condominium built in 1928, on a 5,975 sq ft lot.
- Floors 2–7Nothing on record
- Floor 1Street levelStreet level.
- Street levelWhat the lot is recorded as
- Above the southern skylineFrom about floor 8 — the tallest thing within 60 m to the south is 23.5 m
- Built
- 1928
- Last altered
- 1987
- Floors
- 7
- Residential units
- 0
- Building type
- Condominium
- Zoning district
- R6A
- Lot area
- 5,975 sq ft
- Building area
- 17,698 sq ft
The apartments
6 condominium apartments are assessed on this block, and the typical one is 1,402 sq ft (130 m²). They run from 122 to 211 m².
The city values the typical one at $1,500,075. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
What it sold for
8 apartments on this tax block changed hands in the year the city last published, at a median of $250,000, from 130,000 to 2,900,000.
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
ROUND POND PROPERTIES 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 25, 2026. They describe the tax lot, not any single filing. When the rest of New York went up
On the market here
2 homes at this address are currently listed for sale by Coldwell Banker and Corcoran. Prices move; the brokerage’s own page is the one that is current, and every row here links to it.
| Unit | Rooms | Size | Price | Per sq ft | Listed by |
|---|---|---|---|---|---|
| Unit 508For sale | Price not read | Coldwell Banker | |||
| Unit 606For sale | Price not read | Corcoran |
Read from the brokerages’ own published listings on October 3, 2026. A home drops off this table the next time they publish a list without it — usually because it sold or let, though a listing can also expire or be withdrawn. What we know is that it is no longer offered, which is why this shows what they have today rather than what we were told once. Everything on the market across the city.
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 3019896. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 1 alteration filing. Its latest status categories are 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Sep 15, 2026
- Latest recorded change
- Sep 22, 2026
- Highest proposed story count
- 6 stories
- Highest proposed unit count
- Not stated
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 1 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Parking Garage structural slab replacements and repairs, as indicated on the submitted drawings. No change in Use, Occupancy, or Egress. Filing B01452362-I1.
- Alteration approved02
Filing B01452362-I1 reached an approved status.
- Alteration now approved03
The latest status recorded for B01452362-I1 is “Approved.”