540 West 21st Street, Manhattan
Apartment building · 34 units · built 2020 · Block 692, Lot 53.
Building permits
- Alteration, filed Jul 20, 2026, estimated cost $1K, described as “Shanty filing”
- Alteration, filed Mar 6, 2026, estimated cost $10K, described as “Installation of temporary foundation wall bracing for crane loads.”
- Alteration, filed Nov 14, 2025, estimated cost $1K, described as “Installation and use of temporary loading platforms as per plan filed herewith. No change in use or occupancy.”
- Alteration, filed Nov 14, 2025, estimated cost $1K, described as “Installation and use of temporary concrete placing boom as per plans filed herewith. No change in use egress, or occupancy.”
- Alteration, filed Nov 5, 2025, described as “Temporary multi point suspended scaffold as per drawings during NB const, filed sep. Multipoint suspended scaffold shall comply with ch 33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Sep 29, 2025, estimated cost $6K, described as “Installation of a temporary construction fence per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Sep 2, 2025, estimated cost $1K, described as “All new mechanical equipment for heating and ventilation for new 20 story residential building (121187820)”
- Alteration, filed Aug 28, 2025, estimated cost $20K, described as “Equipment use: dual 7000# capacity personnel hoists during NB const, filed sep. Hoists shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application. Elevator application submitted separately”
- Alteration, filed Aug 4, 2025, estimated cost $12K, described as “Installation of a temporarily heavy-duty sidewalk shed per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Jun 17, 2025, estimated cost $15K, described as “Installation of a temporary roof protection, window protection and overhead protection per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Feb 21, 2025, estimated cost $1K, described as “Fence Installation as per plans filed herewih.”
- Alteration, filed Jan 21, 2025, estimated cost $700K, described as “Ground floor slab demolition as shown per plan. Filed in conjunction with NB 121187820.”
- Alteration, filed Jan 21, 2025, estimated cost $600K, described as “Wall bracing of ex. Fnd wall for 1ST fl slab demo filed inconjunction with NB application 121187820”
- Alteration, filed Jan 25, 2019, described as “Installation of fence as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jan 17, 2019, described as “Installation of heavy duty sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Sep 10, 2018, estimated cost $10K, described as “Filing for 15.3 foot curb cut on west 21ST street in conjunction with NB application 121187820.”
- Alteration, filed Jul 3, 2018, estimated cost $5K, described as “Installation of construction fence as per plans filed herewith. Fence filed in conjunction with NB application 121187820. Fence on west 21ST street to be mounted on dot approved movable barricades.”
- Alteration, filed Jun 19, 2018, described as “Installation of temporary sidewalk shed and supported scaffold per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Jun 7, 2018, described as “Installation of temporary sidewalk shed per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Nov 29, 2017, described as “Installation of temporary sidewalk shed per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Nov 1, 2017, described as “Installation of sidewalk shed, construction fence and supported scaffold (on top of sidewalk shed) per plan submitted. work shall comply with 2014 building codes chapter 33. no change in use, egress and/or occupancy under this application”
Property taxes
- Assessment
- $6,410,700
- 2026–27 tax
- $797,427
- Market value (city estimate)
- $14,246,000
- Taxable value
- $6,410,700
- Assessed land
- $2,056,050
- Assessed improvements
- $4,354,650
Zoning
C6-3 (part of the lot is M1-5): floor area ratio 9.99 built, above the 7.52 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NGVD29). FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 11 ft (NAVD88).
Recent sales
- Apr 15, 2024: $87,400,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Board and land use applications
- 550 W. 21st St WCh Affordable Housing Fund Cert (City Planning 2025M0118): Completed, filed Nov 26, 2024. This is a private application by 550W21 OWNER LLC for a Chairperson certification pursuant to ZR 98-262(c) to permit an increase in the allowable FAR through a contribution to the West Chelsea Affordable Housing Fund (WCAHF) on the…
In the news
550 West 21st Street Condo Tower Tops Out in West Chelsea, Manhattan, New York YIMBY, Jul 3, 2026.