$1,395,000 Sold Jun 2026 · Unit 43
$8,715,000 Assessed value
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| Building size | 32,718 sq ft |
|---|---|
| Building dimensions | 58 × 97 ft |
| Stories | 7 |
| Basement / garden level | Yes — below ground |
| Sq ft per floor | 4,674 sq ft |
| Year built | 1913 |
| Lot dimensions | 58.17 × 109.5 ft |
|---|---|
| Lot area | 6,335 sq ft |
| FEMA flood zone | X — minimal risk |
| Units | 35 |
|---|---|
| Zoning | R8B |
| Building class | D4 |
| Ownership | Co-op building |
| Block / lot | Block 770 / Lot 59 |
| Built FAR | 5.16 |
|---|---|
| Max residential FAR | 4.00 |
| Max facility FAR | 4.00 |
| Last recorded sale | $1,395,000 (Jun 2026) |
|---|---|
| Assessed value | $8,715,000 |
| Tax class | 2 |
| Annual property tax | $453,221 |
| Rent regulated | Co-op |
Terms on this page, explained →
234 West 21 Street was built in 1913 — roughly 113 years old. This is a co-op building with 35 apartments — residents own shares in the corporation that owns the building, rather than their apartments outright. Apartments average about 935 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 $453,221 per year — passed to residents through monthly maintenance in proportion to each apartment’s share allocation. A straight average works out to roughly $12,949 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 43, for $1,395,000 in Jun 2026.
The building already exceeds what current residential zoning would allow (5.16 built FAR vs. a residential maximum of 4.00) — 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.