300 East 42nd Street, Manhattan
Condominium · built 1964 · Block 1334, Lot 7501.
Building permits
- Alteration, filed Aug 14, 2026, estimated cost $50K, described as “New fuel oil storage, pumps and associated piping”
- Alteration, filed Jul 21, 2026, estimated cost $1K, described as “Installation of temporary construction fence as per plan. No change in use, egress or occupancy.”
- Alteration, filed Jun 6, 2026, estimated cost $101K, described as “Installation of new AT&T site on the roof. Install 3 sectors (9 antennas), 9 RRH units, 1 GPS units, and install new platform with 1 cabinet on the roof.”
- Alteration, filed Apr 6, 2026, estimated cost $10K, described as “Heavy duty sidewalk shed during building converstion filed under application # M01254875. Sidewalk shed shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Mar 19, 2026, estimated cost $150K, described as “Structural work in conjunction with floor 6th to 18th construction”
- Alteration, filed Jan 6, 2026, estimated cost $2K, described as “Install 8 8-foot-high plywood fence. Total 31' frontage”
- Alteration, filed Jan 6, 2026, estimated cost $2K, described as “Install 8 8-foot-high plywood fence. Total 24' frontage”
- Alteration, filed Nov 25, 2025, described as “IRA to assist with Condition Assessment”
- Alteration, filed Sep 29, 2025, estimated cost $775K, described as “Interior fit-out for existing office space on partial 5TH floor and partial 1ST floor street lobby. No change to use, egress or occupancy.”
- Major Renovation — Conversion, filed Aug 10, 2025, estimated cost $30.5M, 133 units added, 17 stories, described as “Residential conversion of partial ground floor and 6th -18th floors of existing office and retail building under ZR 15-00.”
- Alteration, filed Jun 27, 2025, estimated cost $829K, described as “Interior soft demolition of the existing office as per plans. No change to use, egress or occupancy”
- Alteration, filed Dec 2, 2024, estimated cost $97K, described as “Facade & Parapet Repairs and railing installation”
- Alteration, filed Oct 29, 2024, described as “Suspended scaffold outrigger system for exterior facade repair works at 300 east 42 street, manhattan ny 10017.”
- Alteration, filed Sep 5, 2024, estimated cost $10K, described as “Installation of new sidewalk shed at 300 east 42 street manhattan as indicated on plans. There will be no change in the use, egress, or occupancy under this application.”
- Alteration, filed Apr 30, 2024, estimated cost $2K, described as “Propose to install flagpoles as per plans filed herewith. No change to use, egress, or occupancy as of right.”
- Alteration, filed Jul 31, 2023, estimated cost $750K, described as “General construction modifications to the 3rd, 4th & 5th floors as per plans filed herewith. No change in use, egress or occupancy.”
- Alteration, filed Aug 8, 2022, estimated cost $275K, described as “Filing for the Installation of ductwork and new AC unit as shown on plans submitted herewith. No change to use, egress or occupancy”
- Alteration, filed Aug 8, 2022, estimated cost $69K, described as “Filing for 2nd Floor Steel framing”
- Alteration, filed Aug 8, 2022, estimated cost $58K, described as “Filing for modification of existing sprinkler system on 2nd floor.”
- Alteration, filed Aug 8, 2022, estimated cost $83K, described as “Filing for the installation of plumbing fixtures”
- Alteration, filed Aug 4, 2022, estimated cost $1.8M, described as “Office build out 2ND floor as shown on plans submitted herewith. No change to use, egress or occupancy.”
- Alteration, filed May 27, 2021, estimated cost $1K, described as “Application is filed to supersede application 110208720 filed for INSTALLATION OF CONTROL VALVES TO EXISTING STANDPIPE and installation of special service fire pump and sprinklers as shown on plans filed herewith. no change to use, egress…”
- Alteration, filed Aug 24, 2020, estimated cost $1.4M, described as “Modification to existing HVAC system and installation of (2) cooling towers”
- Alteration, filed Aug 24, 2020, estimated cost $35K, described as “Modification to existing plumbing & sprinkler systems”
- Alteration, filed Aug 12, 2020, estimated cost $50K, described as “Plumbing and sprinkler modification of existing office space in conjunction with application #140933462.”
10 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $30,670,200
- 2026–27 tax
- $3,263,805
- Market value (city estimate)
- $68,156,000
- Taxable value
- $30,086,694
- Assessed land
- $7,920,000
- Assessed improvements
- $22,750,200
- Condo units with their own tax lots
- 3
Zoning
C5-2: floor area ratio 13.62 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
- Apr 14, 2026: $22,000,000, Apt 2
Open-market sales since 2016, from the Department of Finance’s sales files.