$2,635,000 Sold Jun 2026 · Unit 1
$2,724,000 Assessed value
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| Building size | 6,608 sq ft |
|---|---|
| Building dimensions | 23.5 × 70 ft |
| Stories | 4 |
| Basement / garden level | Yes — below ground |
| Sq ft per floor | 1,652 sq ft |
| Year built | 1940 |
| Lot dimensions | 23.5 × 97.83 ft |
|---|---|
| Lot area | 2,299 sq ft |
| FEMA flood zone | X — minimal risk |
| Units | 4 |
|---|---|
| Zoning | R6B |
| Building class | C6 |
| Ownership | Co-op building |
| Block / lot | Block 976 / Lot 7 |
| Built FAR | 2.87 |
|---|---|
| Max residential FAR | 2.00 |
| Max facility FAR | 2.00 |
| Last recorded sale | $2,635,000 (Jun 2026) |
|---|---|
| Assessed value | $2,724,000 |
| Tax class | 2C |
| Annual property tax | $25,924 |
| Rent regulated | Co-op |
Terms on this page, explained →
309 6 Avenue was built in 1940 — roughly 86 years old. This is a co-op building with 4 apartments — residents own shares in the corporation that owns the building, rather than their apartments outright. Apartments average about 1,652 sq ft (building area divided by apartment count — individual units vary). 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 corporation pays one building-wide tax bill — about $25,924 per year — passed to residents through monthly maintenance in proportion to each apartment’s share allocation. A straight average works out to roughly $6,481 per apartment per year, though larger apartments carry more shares (and many primary residents get the co-op/condo abatement on top). The most recent recorded sale in the building was unit 1, for $2,635,000 in Jun 2026.
The building already exceeds what current residential zoning would allow (2.87 built FAR vs. a residential maximum of 2.00) — typically a grandfathered or overbuilt structure that could not be rebuilt to this size under today’s rules. This lot is associated with a co-op; individual apartments are owned as shares and taxed through the building.
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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.