The story of your home
Preview646 Union Street
Brooklyn · built 1901
This multifamily walk-up at 646 Union Street is nestled in Park Slope, a Brooklyn neighborhood renowned for its late 19th-century rowhouses and proximity to Prospect Park. City records date the construction of this building to 1901.
With three residential units, this property reflects the common housing stock that emerged as Park Slope developed into a desirable residential area around the turn of the 20th century. Its location on block 955, lot 21 places it within a historic urban fabric.
This building contributes to the enduring character of Park Slope, a neighborhood celebrated for its tree-lined streets and architectural heritage.
This overview was generated from public records, including NYC property data.
Where it stands
The deed chain
No deeds have surfaced for this address yet. Ownership records often live only at the county recorder — when we find a transfer, the full chain will appear here.
Go deeper · deed records
Search Kings (Brooklyn), NY's county recorder →NYC ACRIS Socrata open datasets — fully open bulk + API; Plot uses these natively. Pre-1966 deeds are scanned but not in the structured dataset. Index reaches back to 1966.
Residents across the decades
See the families who called this address home, census by census, 1880–1950.
Unlock this layer →Press mentions
A century of newspaper sightings of this address — births, sales, the times it made the paper.
Unlock this layer →Photographs
Historical photos of this house and its block, curated from public archives.
Unlock this layer →Nearby & related
Add to this house's story
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