Manhattan Midtown South-Flatiron-Union Square Public building report
5-9 Union Sq, Manhattan
5-9 Union Sq is an 8-story, 11-unit office building in Midtown South-Flatiron-Union Square. NYC public records show 17 DOB complaints and 78 DOB violations associated with the building. The most recent DOB complaint was filed July 14, 2026. Public sale records were identified for 305 units.
This building has 6 alternative addresses. NYC often lists more than one street address for the same building. Corner lots, multiple street frontages, and official aliases in city address files all map to one BIN.
- 5 Union Square
- 7 Union Square
- 9 Union Square
- 5 Union Square West
- 7 Union Square West
- 9 Union Square West
This building is the 12th most valuable building in Midtown South-Flatiron-Union Square and the 2,397th in New York. It ranks in the top 40% for DOB complaints and top 20% for DOB violations.
Public records
- DOB complaints 17
- DOB violations 78
- HPD violations 0
- Bedbug reports 0
- 311 requests 0
- Residential units 374 $260,400,720 last recorded sales
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