Manhattan

Large commercial buildings in Union Square

Every office, retail and industrial building in Union Square with at least 100,000 square feet of that space, from the city's own tax lot records. Open one for its size, age, zoning and any space listed in it.

Buildings
27
Their floor area
5.1M SF
Largest
114 Fifth Avenue
  1. 114 Fifth AvenueOffice building with commercial space · 329K SF office · 18 floors · built 1909
  2. 230 Park Avenue SouthOffice building with commercial space · 311K SF office · 13 floors · built 1900
  3. 35 Irving PlaceOffice building · 288K SF office · 12 floors · built 1909
  4. 215 Park Avenue SouthOffice building · 275K SF office · 20 floors · built 1910
  5. 44 East 14th StreetRetail building · 263K SF retail · 7 floors · built 1971
  6. 79 Fifth AvenueOffice building with commercial space · 256K SF office · 16 floors · built 1906
  7. 55 Fifth AvenueCommercial condominium · 252K SF office · 19 floors · built 1912
  8. 842 BroadwayRetail building · 227K SF retail · 6 floors · built 1998
  9. 100 Fifth AvenueCommercial condominium · 224K SF office · 19 floors · built 1906
  10. 200 Park Avenue SouthOffice building with commercial space · 224K SF office · 16 floors · built 1908
  11. 122 Fifth AvenueOffice building with commercial space · 223K SF office · 11 floors · built 1900
  12. 124 East 14th StreetOffice building · 208K SF office · 22 floors · built 2020
  13. 849 BroadwayOffice building · 208K SF office · 21 floors · built 1900
  14. 225 Park Avenue SouthOffice building with commercial space · 181K SF office · 19 floors · built 1910
  15. 83 University PlaceOffice building with commercial space · 181K SF office · 11 floors · built 1906
  16. 21 Irving PlaceOffice building with commercial space · 155K SF office · 12 floors · built 1910
  17. 233 Park Avenue SouthOffice building with commercial space · 137K SF office · 12 floors · built 1909
  18. 110 Fifth AvenueOffice building with commercial space · 135K SF office · 11 floors · built 1890
  19. 797 BroadwayOffice building with commercial space · 124K SF office · 12 floors · built 2019
  20. 32 Union SquareOffice building with commercial space · 123K SF office · 12 floors · built 1903
  21. 71 Fifth AvenueOffice building with commercial space · 122K SF office · 11 floors · built 1907
  22. 84 Fifth AvenueOffice building with commercial space · 118K SF office · 11 floors · built 1903
  23. 34 West 14th StreetOffice building with commercial space · 114K SF office · 5 floors · built 1930
  24. 60 Fifth AvenueOffice building · 114K SF office · 8 floors · built 1924
  25. 80 Fifth AvenueOffice building with commercial space · 111K SF office · 17 floors · built 1908
  26. 817 BroadwayOffice building with commercial space · 108K SF office · 14 floors · built 1898
  27. 26 West 17th StreetOffice building with commercial space · 101K SF office · 12 floors · built 1908

Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-09-26. Sizes count each building's largest use (office, retail or industrial). Boundaries are approximate: each tax lot counts toward one neighborhood only. Only buildings with a street number and a leasable commercial building class are included.