718 5th Avenue, Manhattan
Commercial · built c. 1937 · Block 1271, Lot 41.
Building permits
- Alteration, filed Jun 4, 2026, estimated cost $67K, described as “Installation of new stair from 1st floor to Mezzanine and reinforcing of existing framing to support the stair (Harry Winston -Retail) as per plans. No change to use, egress or occupancy.”
- Alteration, filed Feb 5, 2026, estimated cost $6.5M, described as “Exterior renovation of facade on the 1st - 5th floors as per plans. No change to use, egress or occupancy.”
- Alteration, filed Feb 4, 2026, estimated cost $445K, described as “Replacement of masonry parapet as per plans. No change to use, egress or occupancy.”
- Alteration, filed Jan 21, 2026, estimated cost $6.9M, described as “Strengthening of Level 1 masonry backup wall”
- Alteration, filed Dec 15, 2025, estimated cost $532K, described as “Modifications to the existing HVAC system on the 1st, Mezz and 2nd floors (Harry Winston - Retail) as per plans. No change to use, egress or occupancy”
- Alteration, filed Dec 15, 2025, estimated cost $15K, described as “Modifications to the existing plumbing system on the 1st, & 2nd floors (Harry Winston - Retail) as per plans. No change to use, egress or occupancy”
- Alteration, filed Dec 15, 2025, estimated cost $78K, described as “Modifications to the existing sprinkler system on the 1st, mezz and 2nd floors (Harry Winston - Retail) as per plans. No change to use, egress or occupancy”
- Alteration, filed Dec 12, 2025, estimated cost $639K, described as “Minor demolition with installation of new partitions, doors, suspended ceilings and finishes on the 1st, Mezzanine & 2nd floors (Harry Winston-Retail) as per plans. No change to use, egress or occupancy.”
- Alteration, filed Oct 6, 2025, estimated cost $1.5M, described as “Removal of travertine veneer. Removal and replacement of masonry backup wall at 2ND through 5TH floors. No change to use, egress or occupancy.”
- Alteration, filed Jul 23, 2025, estimated cost $2K, described as “Temporary monorail system as per drawings. Monorail system shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Jul 23, 2025, estimated cost $2K, described as “Temporary system scaffold as per drawings. System scaffold shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed May 12, 2025, estimated cost $3K, described as “Heavy duty sidewalk shed during bldg alteration under application# M01134202 & M01092093, filed sep. Sidewalk shed shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed May 12, 2025, estimated cost $3K, described as “Construction fence as per drawings. Construction fence shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application. Dot permits by others for fence on sidewalk / roadway.”
- Alteration, filed Apr 10, 2025, estimated cost $10K, described as “Construct temporary fence.”
- Alteration, filed Feb 7, 2025, estimated cost $125K, described as “Removal and replacement of portions of cellar vault slab. No change to use, egress or occupancy.”
- Alteration, filed Jan 21, 2025, estimated cost $88K, described as “Modifications to the existing plumbing system on the 3rd floor (Harry Winston - Office Fit-out) as per plans. No change to use, egress or occupancy”
- Alteration, filed Jan 21, 2025, estimated cost $200K, described as “Modifications to the existing HVAC system on the 3rd & 4th floors (Harry Winston - Office Fit-out) as per plans. No change to use, egress or occupancy”
- Alteration, filed Jan 21, 2025, estimated cost $100K, described as “Structural modification on the 4th floor (Harry Winston - Office Fit Out) as per plans. No change to use, egress or occupancy.”
- Alteration, filed Jan 21, 2025, estimated cost $166K, described as “Modifications to the existing sprinkler system on the 3rd & 4th floors (Harry Winston - Office Fit-out) as per plans. No change to use, egress or occupancy”
- Alteration, filed Jan 21, 2025, estimated cost $791K, described as “Minor demolition with installation of new partitions, doors, suspended ceilings and finishes on the 3rd & 4th floors (Harry Winston-Office Fit-out) as per plans. No change to use, egress or occupancy.”
- Alteration, filed Sep 24, 2024, estimated cost $2.3M, described as “Removal and replacement of portions of cellar vault slab as per plans. No change to use, egress or occupancy.”
- Alteration, filed Sep 24, 2024, estimated cost $200K, described as “Modifications to the existing sprinkler system on the cellar floor (Harry Winston - Cellar Fit-out) as per plans. No change to use, egress or occupancy”
- Alteration, filed Sep 24, 2024, estimated cost $75K, described as “Modifications to the existing plumbing system on the cellar and first floor (Harry Winston - Cellar Fitout) as per plans. No change to use, egress or occupancy”
- Alteration, filed Sep 24, 2024, estimated cost $375K, described as “Modifications to the existing HVAC system on the Cellar floor (Harry Winston - Cellar Fitout) as per plans. No change to use, egress or occupancy.”
- Alteration, filed Sep 18, 2024, estimated cost $1.2M, described as “Minor demolition with installation of new partitions, doors, suspended ceilings and finishes and sidewalk repair on the Cellar & 1st floors (Harry Winston -Fitout) as per plans. No change to use, egress or occupancy.”
25 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $38,274,750
- 2026–27 tax
- $4,152,045
- Market value (city estimate)
- $85,055,000
- Taxable value
- $38,274,750
- Assessed land
- $1,966,500
- Assessed improvements
- $36,308,250
Zoning
C5-3: floor area ratio 6.00 built, 15.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.