366 Madison Ave
366 MADISON AVENUE, New York, NY, USA in Midtown East, Manhattan is a property zoned C5-3. The building spans built in 1921, 84,518 gross square feet, 15 floors, 16 units. It last traded for $50M in October 2025, and is held by 366 MAD LLC. Below, Crezly Research breaks down the building's ownership, debt profile, and recent nearby sales from New York City public records.
The building
| Address | 366 MADISON AVENUE, New York, NY, USA |
| BBL (Borough-Block-Lot) | 1-1281-56 |
| Zoning district | C5-3 |
| Year built | 1921 |
| Gross floor area | 84,518 sq ft |
| Lot area | 6,025 sq ft |
| Total units | 16 |
| Floors | 15 |
| Built FAR | 14.03 |
| Assessed value (total) | $15.27M |
Who owns it
366 MAD LLC
Last recorded sale $50M (Oct 2025) · Estimated outstanding debt $32.5M
Owner contact & lender details
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Unlock owner contacts →Recent nearby sales
Recorded deeds on and around this block (ACRIS).
| Address | Recorded | Price |
|---|---|---|
| 575 5 AVENUE | 2026-04-24 | $316M |
| 575 5 AVENUE | 2026-04-24 | $62M |
| 250 PARK AVENUE | 2024-08-21 | $320.15M |
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Compiled by Crezly Research from New York City public records (ACRIS, PLUTO, DOB/HPD).
Figures are estimates from public data and may not reflect the most recent transactions. Not legal, financial or investment advice.