800 5th Avenue, Manhattan
Apartment building · 208 units · built 1979 · Block 1376, Lot 1.
Building permits
- Demolition, filed Sep 24, 2026, estimated cost $250K, described as “Full demolition by hand with mechanical assist from within the building”
- Major Renovation — Tower, filed Sep 24, 2026, 208 units in all, 30 stories, described as “Alt 1 with new building requirements”
- Demolition, filed Jun 15, 2026, estimated cost $1.0M, described as “Full demolition of 33 story building with portions of the structure to remain from sub-cellar through 5th fl including floor slab, beams and columns.”
- Alteration, filed Mar 30, 2026, estimated cost $887K, described as “Removal of non-load bearing interior partitions and mechanical equipment. There is no change to use, egress, occupancy, or fire protection.”
- Alteration, filed Oct 31, 2024, estimated cost $190K, described as “Replacement of 2 cooling towers on roof. No change to egress, use, or occupancy.”
- Alteration, filed Jul 16, 2024, estimated cost $220K, described as “Garage repairs as per plans. No change in use, egress, or occupancy.”
- Alteration, filed Apr 26, 2023, estimated cost $324K, described as “New interior partitions, light fixtures, appliances, plumbing fixtures and life safety equipment. Work inside suite 205 only.”
- Alteration, filed Jan 11, 2022, estimated cost $4K, described as “Supported pipe scaffold as shown on the plans. No change in use, egress, or occupancy under this application.”
- Alteration, filed Jan 7, 2022, estimated cost $45K, described as “Hereby filing for the relocation and removal of fixtures. No change to use occupancy or egress.”
- Alteration, filed Jan 7, 2022, estimated cost $65K, described as “Hereby filing for the installation of mechanical equipment. No change to use occupancy or egress”
- Alteration, filed Jan 6, 2022, estimated cost $95K, described as “Hereby filing tenant fit out. Installation of non load bearing partitions, mill-work and finishes. No change to use occupancy or egress.”
- Alteration, filed Dec 21, 2021, estimated cost $3K, described as “Installation of 300psf sidewalk shed as per plans, sidewalk shed shall comply with chapter # 33 of the code 2014, no changes in use, egress and occupancy under this application.”
- Alteration, filed Feb 5, 2021, estimated cost $22K, described as “Installation of sprinkler heads as per plans filed herewith.”
- Alteration, filed Feb 4, 2021, estimated cost $10K, described as “Installation of mechanical units as per plans filed herewith. no change to use, egress or occupancy.”
- Alteration, filed Feb 4, 2021, estimated cost $136K, described as “800B Suite 2: Interior renovations of dental office as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Feb 4, 2021, estimated cost $27K, described as “Installation of plumbing fixtures as per plans filed herewith.”
- Alteration, filed Sep 21, 2020, estimated cost $35K, described as “Installation of plumbing fixtures as per plans filed herewith.”
- Alteration, filed Sep 21, 2020, estimated cost $15K, described as “Installation of sprinkler heads as per plans filed herewith.”
- Alteration, filed Aug 19, 2020, estimated cost $26K, described as “Hereby filing for the installation of 35 sprinkler heads. No change to use egress or occupancy.”
- Alteration, filed Aug 19, 2020, estimated cost $30K, described as “Hereby filing for the installation of mechanical equipment. No change to use egress or occupancy.”
- Alteration, filed Dec 6, 2019, estimated cost $30K, described as “Installation of plumbing fixtures on the 3rd floor of existing commercial space 301. No change in use, occupancy or egress.”
- Alteration, filed Dec 5, 2019, estimated cost $50K, described as “Installation of water source AC unit, diffusers and grilles with associated ductwork. Mechanical work. No change in use, occupancy or egress.”
Property taxes
- Assessment
- $93,384,450
- 2026–27 tax
- $10,809,894
- Market value (city estimate)
- $207,521,000
- Taxable value
- $86,903,240
- Assessed land
- $32,265,000
- Assessed improvements
- $61,119,450
Zoning
R10: floor area ratio 12.61 built, above the 10.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 14, 2025: $810,000,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Upper East Side Historic District (Historic District). 50 Landmarks Preservation Commission permits are on file.
Board and land use applications
- 800 Fifth Avenue Non-ULURP Mod (City Planning 2026M0136): Special permit, Filed, filed Jun 8, 2026. A non-ULURP mod to a previously approved special permit (CP23226b) to facilitate changes to a mixed-use development, is being sought by a private applicant at 800 Fifth Avenue in Lenox Hill, Community District 8, Manhattan.
In the news
Renderings Reveal RAMSA Redevelopment of 800 Fifth Avenue on Manhattan’s Upper East Side, New York YIMBY, Nov 15, 2025.