609 West 51st Street, Manhattan
Commercial · built c. 1924 · Block 1099, Lot 21.
Building permits
- Alteration, filed Mar 27, 2026, estimated cost $400K, described as “Replacement of existing chiller and chiller pumps on technical (mechanical) roof, work to include the split systems to serve Server room on 6th floor as per plans filed herewith. No change in use, egress or occupancy.”
- No Work, filed Jun 2, 2023, described as “Private clothing sale, invited employees and families only.”
- No Work, filed Oct 29, 2019, described as “A conference for sustainability, for invited guests only”
- No Work, filed Apr 23, 2019, described as “Fashion show and after-party for Prada, for invited guests only. Fashion show on 7th floor, then after-party on 6th floor and 7th floor.”
Property taxes
- Assessment
- $14,287,050
- 2026–27 tax
- $1,415,444
- Market value (city estimate)
- $31,749,000
- Taxable value
- $13,047,970
- Assessed land
- $7,650,000
- Assessed improvements
- $6,637,050
Zoning
M2-4: floor area ratio 4.85 built, 5.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.