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| Building Mass Height | 17.7 m |
| Architectural Height | 17.7 m |
| Main Roof Height | 17.7 m |
| Floors | 5 |
| Completion | 1899 |
| Structural Form | low-rise building |
| Main Usage | residential |
| Status | existing |
| Address | 21 East 84th Street |
| Smart Address | 21 East 84th Street |
| Smart Address | 1130 Madison Avenue |
| 1st Level District | Manhattan |
| 2nd Level District | Upper East Side |
| City | New York City, NY |
| Country |  United States |
