1 Chelsea Square
Chelsea, Manhattan
Parcel ID (BBL): 1007180001
Owner: Vanderbilt University
Acquired: September 26, 2025, $44.3 million
Built: 1931
SF: 133,885
Dwelling units: 0
No. of buildings: 1
Class: Theological Seminaries (W7)
Floors: 6
Legacy BBLs: 1007180001
Transactions:
• General Theological Seminary sold 440 West 21st Street, 180 10th Avenue, 180 10th Avenue, and 177 9th Avenue, Chelsea, Manhattan for $44.3 million to Vanderbilt University on September 26, 2025.
Development:
• Ward Ewing filed new building job 104644547 for F-1A building in Chelsea, Manhattan, on December 21, 2006.
• Ward Ewing filed major alteration job 120066301 for 3,000 sqft E building with 6 apartments in Chelsea, Manhattan, on June 16, 2009.
• Richard Mason filed major alteration job 104043483 for J-1 building with 60 apartments in Chelsea, Manhattan, on March 04, 2005.
• Matthew Riethmiller filed alteration job M01360316 for 1,000 sqft building with 0 apartments in Chelsea, Manhattan, on April 22, 2026.
• Matthew Riethmiller filed alteration job M01376289 for 1,000 sqft building with 2 apartments in Chelsea, Manhattan, on March 30, 2026.
• Matthew Riethmiller filed alteration job M01370541 for 500 sqft PUB building with 0 apartments in Chelsea, Manhattan, on March 17, 2026.
• Matthew Riethmiller filed alteration job M01357478 for 1,000 sqft building with 2 apartments in Chelsea, Manhattan, on February 16, 2026.
• Matthew Riethmiller filed alteration job M01355154 for 1,000 sqft building with 0 apartments in Chelsea, Manhattan, on February 11, 2026.
Violations:
According to city public data, the properties have received $7,500 in ECB penalties and $9,510 in OATH penalties in the last year.