440 West 21st Street, Manhattan
Seminary · built c. 1931 · Block 718, Lot 1.
Building permits
- Alteration, filed Jul 22, 2026, estimated cost $55K, described as “Replace two (2) direct-vent gas-fired hot water heaters as per plans. Connect to existing gas piping. No change in use, egress or occupancy.”
- Alteration, filed Jul 2, 2026, estimated cost $3K, described as “Installation of a temporary heavy-duty sidewalk shed 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 Jul 1, 2026, estimated cost $3K, described as “Installation of a temporarily supported scaffold 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 Apr 22, 2026, estimated cost $3K, described as “Installation of a temporary Material hoist 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 Mar 30, 2026, estimated cost $3K, described as “Installation of a temporary Material storage 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 16, 2026, estimated cost $3K, described as “Installation of a temporary supported scaffold 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 11, 2026, estimated cost $3K, described as “Installation of temporary debris chute as 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 11, 2026, described as “The plywood fence at west 20TH street and the chain link fence at the back of the building in the court yard,”
- Alteration, filed Feb 10, 2026, estimated cost $2.3M, described as “Sherred hall - installation of a self-contained storm water system with detention tank in the open space of the interior courtyard. There is no connection to the city water supply or to the city storm water system. No change in use,…”
- Alteration, filed Jan 21, 2026, estimated cost $80K, described as “Temporary shoring and bracing work scope filed to facilitate the structural renovations of the existing building on site”
- Alteration, filed Jan 21, 2026, estimated cost $82K, described as “Foundation work scope filed for construction of approximately 41 square feet of concrete foundation underpinning of the existing building to facilitate the structural renovations of the existing building on site”
- Alteration, filed Jan 21, 2026, estimated cost $15K, described as “Support of excavation work scope filed for construction of new elevator and approximately 41 square feet of concrete foundation underpinning of the existing building on site”
- Alteration, filed Jan 15, 2026, estimated cost $3K, described as “Installation of a temporarily supported scaffold 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 Dec 17, 2025, estimated cost $6K, described as “Installation of a temporarily heavy-duty sidewalk shed 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 Dec 16, 2025, estimated cost $1.8M, described as “Dodge hall - scope includes reconfiguration of storage, removing closets in dormitory rooms, and patching the floor at wall removal. No change to use, egress, or occupancy.”
- Alteration, filed Dec 16, 2025, estimated cost $80K, described as “Kohne hall - removal and installation of interior partitions for reconfiguration of student lounge, removal of closets in dormitory rooms, and patching floor at wall removal no change in use, egress or occupancy.”
- Alteration, filed Dec 16, 2025, estimated cost $3K, described as “Installation of a temporarily heavy-duty sidewalk shed 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 Dec 16, 2025, estimated cost $35K, described as “Chapel & sacristy- removal and installation of interior partitions to reconfigure existing bathroom. No change in use, egress or occupancy. See comments.”
- Alteration, filed Dec 16, 2025, estimated cost $462K, described as “Pintard hall - reconfiguring of student lounge, removing closets in dormitory rooms, and patching floor at wall removal. No change in use, egress or occupancy.”
- Alteration, filed Dec 16, 2025, estimated cost $474K, described as “Dehon hall - removal and installation of interior partitions to reconfigure student lounge, adding bathroom, removing closets in dormitory rooms and patching floor at wall removal. No change in use, egress or occupancy.”
- Alteration, filed Dec 4, 2025, estimated cost $2.7M, described as “Sherred hall - removal and installation of interior partitions and finishes. No change in use, egress or occupancy.”
- Alteration, filed Dec 4, 2025, estimated cost $4.7M, described as “Seabury hall - removal and installation of interior partitons and finishes. New elevator shaft walls. No change in use, egress or occupancy.”
- Alteration, filed Nov 6, 2025, estimated cost $600K, described as “Chapel & sacristy - structural work as described on drawings and in the comment box below.”
- Alteration, filed Nov 5, 2025, estimated cost $400K, described as “Seabury hall - structural work as described on drawings and in the comment box below.”
- No Work, filed Oct 22, 2025, described as “Event for Vanderbilt University. The scope of this TPA is only in the courtyard tents.”
20 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $12,055,050
- Market value (city estimate)
- $26,789,000
- Taxable value
- $0
- Assessed land
- $6,840,000
- Assessed improvements
- $5,215,050
Tax breaks
- Nonprofit exemption (religious school), with no end date, about $1,307,732 a year below the full tax.
Zoning
R7B: floor area ratio 1.72 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Landmarks
Part of Chelsea Historic District (Historic District). 50 Landmarks Preservation Commission permits are on file.