31 Union Square, Manhattan
Apartment building · 82 units · built c. 1902 · Block 844, Lot 17.
Building permits
- No Work, filed Jul 24, 2026
- Alteration, filed Jul 17, 2026, estimated cost $243K, described as “Interior renovation of existing eating & drinking establishment. Obtain new certificate of occupancy for occupancy load changes.”
- Alteration, filed Jun 26, 2026, estimated cost $160K, described as “Remove minor wall and finishes to provide vanilla box for future tenant fit-out. No change in use, egress, or occupancy.”
- Alteration, filed Dec 12, 2025, estimated cost $5K, described as “Installation of new awnings as per plan herewith. No change in use, egress or occupancy.”
- Alteration, filed Dec 12, 2025, estimated cost $3K, described as “Installation of two new signs as per plan herewith. No change in use, egress or occupancy.”
- Alteration, filed Nov 10, 2025, described as “Application for the installation and use of material hoist as per plans filed herein. No change in egress, use, or occupancy.”
- Alteration, filed Jan 8, 2025, estimated cost $178K, described as “Cellar metal beam repairs and cellar concrete celing and sidewalk reconstruction. No change of use, egress or occupancy.”
- Alteration, filed Oct 15, 2024, estimated cost $525K, described as “New interior & exterior renovations with associated demolition to an existing commercial retail structure”
- Alteration, filed Sep 16, 2024, estimated cost $5K, described as “Installation of fence as per plan.”
- Alteration, filed Sep 3, 2024, estimated cost $178K, described as “Filing herewith Partial demolition of basement vaulted ceiling and concrete sidewalk and shoring design. No change in use, egress or occupancy.”
- Alteration, filed Apr 29, 2024, estimated cost $5K, described as “Installation of plywood fence as per plan”
- Alteration, filed Jan 9, 2024, estimated cost $33K, described as “Interior renovations of 3rd floor apt# 3c - all finishes as per plans- OT in conjunction filed under separate application # M00978612-I1. No change in use, egress or occupancy”
- Alteration, filed Jan 8, 2024, estimated cost $199K, described as “Interior renovations of 3rd floor apt# 3C - all finishes as per plans- PL in conjunction filed under separate application #M00978616-I1 No change in use, egress or occupancy.”
- Alteration, filed Nov 17, 2023, estimated cost $33K, described as “Interior renovations of 12 floor apt# 12A - all finishes as per plans- PL in conjunction filed under separate application # M00950091-I1. No change in use, egress or occupancy”
- Alteration, filed Nov 17, 2023, estimated cost $199K, described as “Interior renovations of 12 floor apt# 12A - all finishes as per plans- PL in conjunction filed under separate application # M00950092-I1. No change in use, egress or occupancy”
- Alteration, filed Apr 26, 2023, estimated cost $30K, described as “Interior renovations of 2nd floor apt# 2A - all finishes as per plans- plumbing work . OT in conjunction filed under separate application # M00826932-I1. No change in use, egress or occupancy.”
- Alteration, filed Apr 26, 2023, estimated cost $199K, described as “Interior renovations of 2nd floor apt# 2A - all finishes as per plans- PL in conjunction filed under separate application # M00826933-I1. No change in use, egress or occupancy.”
- Alteration, filed Mar 24, 2023, estimated cost $30K, described as “Interior renovations of 10th floor apt# 10 c - all finishes as per plans- plumbing work. OT in conjunction filed under separate application # M00826930-I1. No change in use, egress or occupancy.”
- Alteration, filed Mar 23, 2023, estimated cost $183K, described as “Interior renovations of 10th floor apt# 10 c - all finishes as per plans . Pl in conjunction filed under separate application # M00826931-I1. No change in use, egress or occupancy.”
- Alteration, filed Aug 3, 2022, estimated cost $186K, described as “Exterior facade restoration as per plan filed herewith. No change in use, egress or occupancy”
- Alteration, filed Oct 29, 2020, estimated cost $4K, described as “Interior renovations in 13 and 14 fl APT#13B and 14A-combine 2 appartments -install new interior stairs. Structural support only under this filing”
- Alteration, filed Jun 25, 2018, 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.”
Property taxes
- Assessment
- $17,672,850
- 2026–27 tax
- $2,010,217
- Market value (city estimate)
- $39,273,000
- Taxable value
- $17,672,850
- Assessed land
- $1,210,500
- Assessed improvements
- $16,462,350
Zoning
C6-2A (part of the lot is C6-4): floor area ratio 19.34 built, above the 6.02 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Landmarks
Part of The Bank of the Metropolis (Individual Landmark). 50 Landmarks Preservation Commission permits are on file.
Board and land use applications
- THE BANK OF METROPOLIS (City Planning P1989M0071): Completed, decided Sep 8, 1988. LANDMARK-CITY COLLEGE OF NY, REMSEN CEMETERY,TROTTING*COURSE LA; Additional LPC #(s): 522
In the news
Flight Club Signs Lease at 31 Union Square West in Flatiron, Manhattan, New York YIMBY, Jul 24, 2024.