399 Park Avenue, Manhattan
Office condominium · built 1969 · Block 1308, Lot 7502.
Building permits
- Alteration, filed Oct 20, 2026, estimated cost $73K, described as “Modification to existing Plumbing & Sprinkler systems as per plans filed herewith.”
- Alteration, filed Oct 18, 2026, estimated cost $820K, described as “Alterations to existing HVAC systems as per plans filed herewith”
- Alteration, filed Oct 15, 2026, estimated cost $778K, described as “Removal and instillation of interior non load bearing partitions and related finishes . No change in use , egress or occupancy”
- Alteration, filed Aug 14, 2026, estimated cost $18K, described as “Modification to Plumbing Systems as per plans filed herewith.”
- Alteration, filed Jul 23, 2026, estimated cost $299K, described as “CVS Retail Space - General Interior renovation as per plans. Plumbing work to be filed subsequently. No change to use, egress or occupancy.”
- Alteration, filed Mar 11, 2026, estimated cost $1.7M, described as “Interior renovation as per plans filed herewith.”
- Alteration, filed Mar 11, 2026, estimated cost $159K, described as “Modification to Mechanical systems as per plans filed herewith.”
- Alteration, filed Mar 11, 2026, estimated cost $19K, described as “Modification to Sprinkler Systems as per plans filed herewith.”
- Alteration, filed Feb 24, 2026, estimated cost $1.1M, described as “General construction from the 32ND floor to the 34TH floor as plans filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Feb 24, 2026, estimated cost $10K, described as “Plumbing work from the 32ND to the 34TH floors as plans filed herewith. No change in use, egress or occupancy.”
- Alteration, filed Feb 24, 2026, estimated cost $135K, described as “Mechanical work from the 32ND to the 34TH floor as plans filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Feb 24, 2026, estimated cost $24K, described as “Sprinkler work from the 32ND to the 34TH floor as plans filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Oct 15, 2025, estimated cost $52K, described as “Modification to Mechanical systems as per plans filed herewith.”
- Alteration, filed Aug 1, 2025, estimated cost $49K, described as “Structural modifications as per plans filed herewith. NO change in use, egress or occupancy.”
- Alteration, filed May 8, 2025, estimated cost $148K, described as “Cast in place concrete slab for acoustic isolation as per plans filed herewith. No change in use, egress or occupancy”
- Alteration, filed May 5, 2025, estimated cost $10K, described as “Installation of temporary scaffold as per plans during general construction work. No change in use, egress or occupancy. Scaffold to comply with chapter 33 of NYC building code of 2022.”
- Alteration, filed Apr 29, 2025, estimated cost $399K, described as “Alterations to existing mechanical systems as per plans filed herewith.”
- Alteration, filed Apr 28, 2025, estimated cost $95K, described as “Alterations to existing PLUMBING/SPRINKLER Systems as per plans filed herewith”
- Alteration, filed Apr 28, 2025, estimated cost $858K, described as “Removal and instillation of interior non load bearing partitions and related finishes. No change in use, egress or occupancy”
- Alteration, filed Mar 20, 2025, estimated cost $40K, described as “Alterations to existing mechanical systems as per plans filed herewith”
- Alteration, filed Mar 20, 2025, estimated cost $1.4M, described as “Removal and construction of interior nonbearing partitions and related finishes as shown on drawings. No change in use, egress or occupancy.”
- Alteration, filed Feb 28, 2025, estimated cost $88K, described as “Alterations to existing plumbing/sprinkler systems as per plans filed herewith”
- Alteration, filed Feb 28, 2025, estimated cost $747K, described as “Removal and instillation of interior non load bearing partitions and related finishes. No change in use, egress or occupancy”
- Alteration, filed Dec 24, 2024, estimated cost $400K, described as “Installation of banquette, art display and planter at interior lobby as shown on drawings. No change in use, egress or occupancy.”
- Alteration, filed Nov 20, 2024, estimated cost $170K, described as “Removal and instillation of interior non load bearing partitions and related finishes. No changes to use, egress or occupancy”
198 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $431,857,800
- 2026–27 tax
- $44,085,816
- Market value (city estimate)
- $959,684,000
- Taxable value
- $406,395,800
- Assessed land
- $78,750,000
- Assessed improvements
- $353,107,800
- Condo units with their own tax lots
- 2
Zoning
C5-2.5 (part of the lot is C5-3): floor area ratio 18.77 built, above the 12.00 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…
In the news
Ten-Year Lease Extension Signed at 387 Park Avenue South In NoMad, Manhattan, New York YIMBY, Nov 20, 2024.