670 9th Avenue, Manhattan
Apartment building · 8 units · built c. 1920 · Block 1037, Lot 4.
Building permits
- Alteration, filed Aug 31, 2026, estimated cost $28K, described as “Repair to existing cracks in the facade to respond to violation 35727607L. No facade alteration, change of use, egress or occupancy.”
- Alteration, filed Jul 14, 2026, estimated cost $9K, described as “Installation of 300PSF sidewalk shed as per plans. All equipment shall comply with ch #33 of the NYC code 2022. No change in use, occupancy or egress under this application.”
- Alteration, filed Mar 3, 2025, estimated cost $40K, described as “Propose to perform construction work to install sub-slab depressurization system. No change to use, egress or occupancy.”
- Alteration, filed Sep 5, 2022, estimated cost $20K, described as “Minor renovation to existing plumbing system: replacement, addition and relocation of plumbing fixtures and related piping and fittings. No change of use, egress or occupancy.”
- Alteration, filed Sep 5, 2022, estimated cost $70K, described as “Renovation of existing apartment: non load bearing partitions, ceilings, flooring, finishes no change of use, egress or occupancy.”
- Alteration, filed Aug 22, 2022, estimated cost $67K, described as “Interior renovation to interior of apartment 4S: new non-load bearing partitions, flooring, millwork, ceilings, no change of use, egress or occupancy.”
- Alteration, filed Aug 22, 2022, estimated cost $15K, described as “Minor renovation to existing plumbing system. No change of use, egress or occupancy.”
Property taxes
- Assessment
- $1,792,350
- 2026–27 tax
- $117,010
- Market value (city estimate)
- $3,983,000
- Taxable value
- $940,671
- Assessed land
- $576,000
- Assessed improvements
- $1,216,350
Zoning
R8: floor area ratio 4.09 built, 6.02 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Feb 16, 2022: $5,000,000
Open-market sales since 2016, from the Department of Finance’s sales files.