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| Building size | 4,034 sq ft |
|---|---|
| Building dimensions | 20 × 40 ft |
| Stories | 3 |
| Sq ft per floor | 1,345 sq ft |
| Year built | 1920 |
| Lot dimensions | 20 × 80 ft |
|---|---|
| Lot area | 1,600 sq ft |
| Units | 4 |
|---|---|
| Zoning | R6B |
| Building class | R0 |
| Block / lot | Block 428 / Lot 7507 |
| Built FAR | 2.37 |
|---|---|
| Max residential FAR | 2.00 |
| Max facility FAR | 2.00 |
| Tax class | 2 |
|---|---|
| Rent regulated | Unlikely |
351 Union Street was built in 1920 — roughly 106 years old. For property-tax purposes it falls under Class 2 (residential buildings with four or more units, condos and co-ops), taxed at 12.439% of a taxable value based on 45% of the city’s income-derived market value.
The building already exceeds what current zoning would allow (2.37 built FAR vs. a maximum of 2.00) — typically a grandfathered or overbuilt structure that could not be rebuilt to this size under today’s rules.
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Data: NYC Department of Finance and Dept. of City Planning (PLUTO) via NYC Open Data. Figures are public records, may lag current bills, and can exclude abatements. Not financial advice.