33 Union Square
Flatiron District, Manhattan
Parcel ID (BBL): 1008440019
Owner: United American Land
Debt: July 01, 2026, $26.3 million
Built: 1893
SF: 51,150
Dwelling units: 20
No. of buildings: 1
Class: Fireproof – With Stores (D6)
Floors: 11
HPD Ownership Registration Information
Last registered: 2025-10-27 (expires 2026-09-01)
Decker Associates Llc
Corporate Owner
73 Spring Street 6th Fl New York, NY, 10012
Michael Mak
Site Manager
Transactions:
• United American Land borrowed $26.3 million from Deutsche Bank for 33 Union Square, Flatiron District, Manhattan on July 01, 2026.
Development:
• Casey Martinez filed major alteration job M00661614 for 50,800 sqft R-2 building with 17 apartments in Flatiron District, Manhattan, on February 28, 2022.
• William Punch filed major alteration job 110170555 for 43,841 sqft RES building with 17 apartments in Flatiron District, Manhattan, on May 14, 2008.
• Casey Martinez filed alteration job M01178394 for building in Flatiron District, Manhattan, on February 24, 2025.
• Casey Martinez filed alteration job M01068652 for 46,696 sqft R-2 building with 17 apartments in Flatiron District, Manhattan, on November 08, 2024.
• Casey Martinez filed alteration job M01048501 for 46,696 sqft R-2 building with 17 apartments in Flatiron District, Manhattan, on November 07, 2024.
• Casey Martinez filed alteration job M01048510 for 350 sqft R-2 building with 17 apartments in Flatiron District, Manhattan, on October 14, 2024.
• Casey Martinez filed alteration job M01059173 for 2,025 sqft R-2 building with 17 apartments in Flatiron District, Manhattan, on August 06, 2024.
Violations:
According to city public data, the properties have received $5,500 in OATH penalties in the last year.