Is 306 Union Ave rent stabilized?
306 Union Ave is a registered NYC rent-stabilized building in Williamsburg, Brooklyn (11211). It has about 21 apartments, built in 1920.
Also written as 306 Union Avenue — or 306 Union Ave, Brooklyn, NY 11211.
How this building compares
With about 21 apartments it is larger than 66% of the 620 rent-stabilized buildings this site tracks in Williamsburg. Its 1920 construction date sits close to the 1915 median for stabilized buildings tracked in the neighborhood. HPD lists 9 open violations here, about one for every 2 apartments — above the one for every 10 apartments median for tracked buildings in the neighborhood. Of the 177 violations on record at the address, 51 are class C — HPD's immediately hazardous grade. Tenants have filed 159 HPD complaints at the address, 28 of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Williamsburg |
| ZIP | 11211 |
| Year built | 1920 |
| Apartments | 21 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A, GARDEN COMPLEX |
| BBL | 3027910001 |
Owner & management
| Owner | BROOKLYN NEIGHBORHOOD HDFC 2 KINGSLAND AVENUE #1ST FL · Brooklyn, NY 11211 |
| Managing agent | ST NICKS ALLIANCE |
Building conditions
| HPD violations | 9 open / 177 total · 19 in last 12 mo |
| HPD complaints | 0 open / 159 total |
| HPD registration last filed | July 9, 2025 |