300 Madison Avenue, Manhattan
Commercial · built 2002 · Block 1276, Lot 58.
Building permits
- Alteration, filed Sep 28, 2026, estimated cost $3.0M, described as “General construction for the interior build-out of the 24th floor, as shown on plans filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Jun 15, 2026, estimated cost $63K, described as “Modification to Plumbing systems as per plans filed herewith.”
- Alteration, filed Jun 15, 2026, estimated cost $850K, described as “Interior renovation as per plans filed herewith.”
- No Work, filed May 13, 2026
- Alteration, filed Apr 8, 2026, estimated cost $8.2M, described as “General construction for the interior build-out of the 35th floor, as shown on plans filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Apr 7, 2026, estimated cost $235K, described as “General construction including interior renovation and change of use on the 35th floor, as shown on plans filed herewith.”
- Alteration, filed Dec 10, 2025, estimated cost $600K, described as “Mechanical Systems modifications with the Installation of new HVAC Equipment and related work as per plans submitted herewith. No Change to Use, Occupancy, or Egress.”
- Alteration, filed Oct 31, 2025, estimated cost $164K, described as “Interior office renovation on the 12TH floor as indicated on plans. No change of use, egress or occupancy.”
- Alteration, filed Sep 18, 2025, estimated cost $3.6M, described as “Interior renovation of offices on 3RD and 4TH floors as indicated on plans. No change of use, egress or occupancy under this application”
- Alteration, filed Jul 25, 2025, estimated cost $119K, described as “Interior non-structural demolition on 3RD and 4TH floors as indicated on plans. No change of use, egress or occupancy.”
- Alteration, filed Jun 18, 2025, estimated cost $1.2M, described as “Interior renovation of existing office space at the 24TH floor. No change of use, egress or occupancy.”
- Alteration, filed Apr 17, 2024, estimated cost $6K, described as “Sprinkler modifications on associated piping as shown on plans filed herewith.”
- Alteration, filed Apr 17, 2024, estimated cost $12K, described as “Mechanical work in commercial space as shown on plans filed herewith. No change in use, egress or occupancy under this application”
- Alteration, filed Apr 11, 2024, estimated cost $62K, described as “Interior renovation work in commercial space as shown on plans filed herewith. No change in use, egress or occupancy under this application”
- Alteration, filed Nov 20, 2023, estimated cost $213K, described as “Interior renovation work including construction of new & demo of existing partitions, doors, finishes, ceiling and related construction as shown on plans filed herewith. No change in use, egress or occupancy under this application”
- Alteration, filed Apr 5, 2023, estimated cost $45K, described as “New steel beams, braces and hangers for movable partition”
- Alteration, filed Jan 26, 2023, estimated cost $1.4M, described as “Addition of new plumbing piping and equipment on the floor. Modification to existing Sprinkler system and Standpipe system as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jan 26, 2023, estimated cost $3.8M, described as “New HVAC Ductwork and piping extensions from base building system, for 67,500 USF of office space. No change is use or occupancy. Additional supplemental cooling in select areas on floor, in the form of chilled water fan coil units.”
- Alteration, filed Jan 18, 2023, estimated cost $19.5M, described as “5TH & 8TH floor tenant improvements for office suite on existing multi-tenant floor. Scope includes new partitions, ceilings, finishes, operable partition, structural, mechanical, electrical, & plumbing. No change to use, egress or…”
- Alteration, filed Oct 20, 2022, estimated cost $251K, described as “8th floor interior fit-out of existing office building inclusive of new partitions and suspended ceiling and finishes. No change to use, egress or occupancy.”
- Alteration, filed Oct 19, 2022, estimated cost $6.5M, described as “6th floor interior fit-out of existing office building inclusive of new partitions and suspended ceiling and finishes. No change to use, egress or occupancy.”
- Alteration, filed Oct 17, 2022, estimated cost $39K, described as “Description of Plumbing Work Being Completed Demolition of Existing Plumbing Fixtures; Removal of existing sprinkler heads, and all associated branch and main piping.”
- Alteration, filed Oct 17, 2022, estimated cost $1.4M, described as “New HVAC Ductwork and piping extensions from base building system, for 26,607 USF of office space. No change is use or occupancy. Additional supplemental cooling in select areas on floor, in the form of chilled water fan coil units.”
- Alteration, filed Oct 17, 2022, estimated cost $556K, described as “Addition of new plumbing piping and equipment on the floor. Modification to existing Sprinkler system and Standpipe system as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Sep 12, 2022, estimated cost $566K, described as “Ajg - 300 madison avenue 26TH floor - mechanical modifications as per plans filed herewith. No change in use, egress, or occupancy.”
36 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $294,000,000
- 2026–27 tax
- $29,878,797
- Market value (city estimate)
- $653,333,300
- Taxable value
- $275,431,390
- Assessed land
- $40,491,900
- Assessed improvements
- $253,508,100
Zoning
C5-3 (part of the lot is C5-2.5): floor area ratio 24.92 built, above the 15.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Board and land use applications
- Greater East Midtown - Special Subdistrict (City Planning P2016M0316): Completed, decided Aug 15, 2017. This is an application by NYC Department of City Planning requesting a text amendment to establish the East Midtown Subdistrict and extend the Special Midtown District, and to rezone a half-block area from C5-2 to C5-3 to reinforce the…
- 300-310 MADISON AVE (City Planning P2000M0008): Completed, decided Aug 8, 2000. CERT TO TRANSFER APPROX 68,000SF OF DEVELOPMENT RIGHTS FROM*GRAND CENTRAL TERMINAL & THE MODIF OF BULK REGULATIONS TO*PERMIT A GREATER FLOOR AREA RATIO IN THE C5-52.5 P/O THE*RECEIVING LOT IN ORDER TO BUILD AN APPROX 777,999SF…