509 5th Avenue, Manhattan
Condominium · built c. 1917 · Block 1277, Lot 7501.
Building permits
- Alteration, filed Oct 16, 2026, estimated cost $705K, described as “Interior renovation as shown on plans filed herewith.”
- Alteration, filed Sep 22, 2026, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of the NYC building code. Live load 300PSF.”
- Alteration, filed Sep 14, 2020, estimated cost $18K, described as “Provide minor sprinkler modifications to existing sprinkler system in conjunction with alteration # 123921756 as per plans filed no change in use occupancy or egress”
- Alteration, filed Jul 14, 2020, estimated cost $81K, described as “Provide plumbing fixtures in conjunction with bathroom renovation filed under alt# 140911020 no change in use occupancy or egress”
Property taxes
- Assessment
- $15,850,799
- 2026–27 tax
- $950,505
- Market value (city estimate)
- $35,224,000
- Taxable value
- $8,762,027
- Assessed land
- $2,353,499
- Assessed improvements
- $13,497,300
- Condo units with their own tax lots
- 12
Tax breaks
- Nonprofit exemption (house of worship), with no end date, about $454,644 a year below the full tax.
- Nonprofit exemption (nonprofit, use planned), with no end date, about $299,351 a year below the full tax.
Zoning
C5-3: floor area ratio 8.67 built, 15.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.