Manhattan

Large commercial buildings in Flatiron

Every office, retail and industrial building in Flatiron with at least 35,000 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
93
Their floor area
12.6M SF
Largest
1 Madison Avenue

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Owner of record, size, floors, year built, zoning, estimated property tax, last sale, energy grade and nearest subway for every building on this list, as a CSV file for Excel or Google Sheets. Free with a Leasemark account.

City records and estimates, not availability: a building on the list is not a space for lease.

Average floor size is an estimate: total building floor area divided by its number of floors, rounded to the nearest 100 SF. Individual floors vary. These are building sizes, not available spaces.

  1. 1 Madison AvenueOffice building · 1.2M SF office · 26 floors · built 1932 · 1 min to 23 St-Baruch CollegeAverage floor: about 47,400 SF
  2. Fifth Avenue Building, 1097 BroadwayOffice building with commercial space · 586K SF office · 15 floors · built 1909 · 1 min to 23 StAverage floor: about 47,000 SF
  3. 35 Madison AvenueOffice building · 520K SF office · 43 floors · built 1971 · 2 min to 28 StAverage floor: about 12,200 SF
  4. 354 Park Avenue SouthOffice building · 439K SF office · 21 floors · built 1913 · 2 min to 28 StAverage floor: about 21,500 SF
  5. 40 West 23rd StreetOffice building with commercial space · 360K SF office · 12 floors · built 1911 · 2 min to 23 StAverage floor: about 36,600 SF
  6. 315 Park Avenue SouthOffice and commercial building · 344K SF office · 20 floors · built 1911 · 1 min to 23 St-Baruch CollegeAverage floor: about 17,800 SF
  7. 902 BroadwayOffice building · 310K SF office · 20 floors · built 1913 · 3 min to 23 StAverage floor: about 17,100 SF
  8. 49 West 23rd StreetOffice building with commercial space · 300K SF office · 12 floors · built 1916 · 2 min to 23 StAverage floor: about 28,100 SF
  9. 37 West 22nd StreetOffice building with commercial space · 263K SF office · 13 floors · built 1906 · 1 min to 23 StAverage floor: about 21,900 SF
  10. 351 Park Avenue SouthOffice building with commercial space · 217K SF office · 12 floors · built 1913 · 2 min to 28 StAverage floor: about 20,300 SF
  11. 620 Avenue of the AmericasOffice condominium · 211K SF office · 7 floors · built 1900 · 3 min to 14 St
  12. 881 BroadwayOffice building with commercial space · 208K SF office · 7 floors · built 1896 · 4 min to 14 St-Union SqAverage floor: about 39,500 SF
  13. Goodstein Building, 11 West 19th StreetOffice building with commercial space · 207K SF office · 11 floors · built 1904 · 4 min to 23 StAverage floor: about 20,400 SF
  14. 120 East 23rd StreetOffice building · 201K SF office · 12 floors · built 1913 · 1 min to 23 St-Baruch CollegeAverage floor: about 16,700 SF
  15. Adams Dry Goods Building, 675 Avenue of the AmericasOffice building with commercial space · 200K SF office · 6 floors · built 1902 · 2 min to 23 StAverage floor: about 39,500 SF
  16. Broadway Building, 915 BroadwayOffice building · 197K SF office · 20 floors · built 1926 · 2 min to 23 StAverage floor: about 10,800 SF
  17. 257 Park Avenue SouthOffice condominium · 190K SF office · 20 floors · built 1913 · 2 min to 23 St-Baruch CollegeAverage floor: about 9,500 SF
  18. Constable Building, 109 Fifth AvenueOffice building with commercial space · 189K SF office · 13 floors · built 1895 · 4 min to 14 St-Union SqAverage floor: about 16,500 SF
  19. 125 West 18th StreetOffice building with commercial space · 189K SF office · 8 floors · built 1917 · 2 min to 18 StAverage floor: about 28,500 SF
  20. 53 East 25th StreetOffice building · 185K SF office · 16 floors · built 1913 · 2 min to 28 StAverage floor: about 11,600 SF
  21. Flatiron Building, 171 Fifth AvenueOffice building · 175K SF office · 21 floors · built 1903 · 1 min to 23 StAverage floor: about 8,700 SF
  22. Presbyterian Building, 154 Fifth AvenueOffice building with commercial space · 169K SF office · 14 floors · built 1895 · 3 min to 23 StAverage floor: about 13,200 SF
  23. 148 Fifth AvenueOffice building with commercial space · 168K SF office · 11 floors · built 1890 · 3 min to 23 StAverage floor: about 17,000 SF
  24. Bradish Johnson Building, 149 Fifth AvenueOffice building with commercial space · 166K SF office · 16 floors · built 1918 · 2 min to 23 StAverage floor: about 10,800 SF
  25. Cluett Building, 23 West 18th StreetOffice building with commercial space · 166K SF office · 11 floors · built 1902 · 4 min to 14 StAverage floor: about 17,400 SF
  26. 47 West 17th StreetOffice building with commercial space · 165K SF office · 12 floors · built 1907 · 2 min to 14 StAverage floor: about 14,900 SF
  27. 304 Park Avenue SouthOffice building with commercial space · 159K SF office · 12 floors · built 1930 · 1 min to 23 St-Baruch CollegeAverage floor: about 15,300 SF
  28. 18 West 18th StreetOffice building with commercial space · 158K SF office · 11 floors · built 1904 · 3 min to 14 StAverage floor: about 15,700 SF
  29. 286 Park Avenue SouthOffice building with commercial space · 148K SF office · 14 floors · built 1911 · 1 min to 23 St-Baruch CollegeAverage floor: about 12,000 SF
  30. Taylor Building, 20 West 22nd StreetOffice building with commercial space · 144K SF office · 16 floors · built 1911 · 2 min to 23 StAverage floor: about 10,600 SF
  31. 695 Avenue of the AmericasRetail building · 125K SF retail · 5 floors · built 1889 · 1 min to 23 StAverage floor: about 37,300 SF
  32. 111 West 19th StreetOffice building with commercial space · 125K SF office · 8 floors · built 1901 · 3 min to 18 StAverage floor: about 20,700 SF
  33. Simpson, Crawford & Simpson Building, 641 Avenue of the AmericasOffice building with commercial space · 122K SF office · 8 floors · built 1902 · 3 min to 18 StAverage floor: about 18,700 SF
  34. 15 West 21st StreetOffice building with commercial space · 117K SF office · 12 floors · built 1910 · 2 min to 23 StAverage floor: about 11,400 SF
  35. 54 West 21st StreetOffice building with commercial space · 110K SF office · 12 floors · built 1910 · 2 min to 23 StAverage floor: about 11,900 SF
  36. 130 Fifth AvenueOffice building with commercial space · 104K SF office · 11 floors · built 1903 · 4 min to 14 StAverage floor: about 10,900 SF
  37. Spero Building, 19 West 21st StreetOffice building with commercial space · 103K SF office · 12 floors · built 1908 · 3 min to 23 StAverage floor: about 9,400 SF
  38. 242 Park Avenue SouthOffice building with commercial space · 103K SF office · 12 floors · built 1911 · 3 min to 23 St-Baruch CollegeAverage floor: about 9,300 SF
  39. 39 West 19th StreetOffice building with commercial space · 98K SF office · 12 floors · built 1910 · 4 min to 23 StAverage floor: about 8,900 SF
  40. 251 Park Avenue SouthOffice building with commercial space · 97K SF office · 16 floors · built 1910 · 2 min to 23 St-Baruch CollegeAverage floor: about 6,500 SF
  41. 104 East 25th StreetOffice building with commercial space · 97K SF office · 12 floors · built 1913 · 2 min to 23 St-Baruch CollegeAverage floor: about 9,500 SF
  42. 37 West 20th StreetOffice building with commercial space · 97K SF office · 12 floors · built 1910 · 3 min to 23 StAverage floor: about 8,800 SF
  43. 287 Park Avenue SouthOffice building with commercial space · 96K SF office · 9 floors · built 1893 · 1 min to 23 St-Baruch CollegeAverage floor: about 11,800 SF
  44. Crystal Building, 40 West 20th StreetOffice condominium · 95K SF office · 12 floors · built 1910 · 3 min to 23 StAverage floor: about 7,900 SF
  45. 22 West 21st StreetOffice building with commercial space · 93K SF office · 12 floors · built 1908 · 3 min to 23 StAverage floor: about 8,400 SF
  46. Brogan Building, 27 West 20th StreetOffice building with commercial space · 92K SF office · 12 floors · built 1908 · 3 min to 23 StAverage floor: about 8,400 SF
  47. 162 Fifth AvenueCommercial condominium · 92K SF office · 12 floors · built 1930 · 2 min to 23 StAverage floor: about 9,500 SF
  48. Mohawk Building, 160 Fifth AvenueCommercial condominium · 91K SF office · 9 floors · built 1900 · 2 min to 23 StAverage floor: about 12,400 SF
  49. Wick Building, 33 East 21st StreetOffice building with commercial space · 90K SF office · 10 floors · built 1903 · 2 min to 23 St-Baruch CollegeAverage floor: about 10,000 SF
  50. Goelet Building, 894 BroadwayOffice building with commercial space · 89K SF office · 10 floors · built 1887 · 3 min to 23 St-Baruch CollegeAverage floor: about 9,800 SF
  51. 18 West 20th StreetOffice building with commercial space · 87K SF office · 11 floors · built 1902 · 4 min to 23 StAverage floor: about 8,500 SF
  52. 912 BroadwayOffice building with commercial space · 86K SF office · 17 floors · built 1917 · 2 min to 23 StAverage floor: about 5,700 SF
  53. 369 Park Avenue SouthOffice building with commercial space · 83K SF office · 12 floors · built 1911 · 1 min to 28 StAverage floor: about 7,400 SF
  54. 118 West 22nd StreetOffice building with commercial space · 82K SF office · 12 floors · built 1911 · 2 min to 23 StAverage floor: about 7,400 SF
  55. Spinning Wheel Building, 3 West 22nd StreetOffice building with commercial space · 81K SF office · 10 floors · built 1901 · 1 min to 23 StAverage floor: about 8,900 SF
  56. 615 Avenue of the AmericasOffice building with commercial space · 77K SF office · 5 floors · built 1877 · 3 min to 18 St
  57. 43 West 23rd StreetOffice building with commercial space · 77K SF office · 8 floors · built 1894 · 2 min to 23 StAverage floor: about 11,500 SF
  58. 126 Fifth AvenueOffice building with commercial space · 74K SF office · 15 floors · built 1906 · 4 min to 14 StAverage floor: about 6,700 SF
  59. 137 East 25th StreetOffice building · 71K SF office · 10 floors · built 1910 · 3 min to 28 StAverage floor: about 7,100 SF
  60. 928 BroadwayOffice building with commercial space · 70K SF office · 12 floors · built 1910 · 2 min to 23 StAverage floor: about 6,400 SF
  61. 150 West 22nd StreetOffice building with commercial space · 69K SF office · 12 floors · built 1910 · 2 min to 23 StAverage floor: about 6,100 SF
  62. 116 East 27th StreetOffice building with commercial space · 67K SF office · 12 floors · built 1915 · 1 min to 28 StAverage floor: about 5,900 SF
  63. 115 East 23rd StreetOffice building with commercial space · 65K SF office · 12 floors · built 1913 · 1 min to 23 St-Baruch CollegeAverage floor: about 5,800 SF
  64. 38 West 21st StreetOffice building with commercial space · 63K SF office · 12 floors · built 1908 · 3 min to 23 StAverage floor: about 5,700 SF
  65. W. & J. Sloane Building, 880 BroadwayCommercial condominium · 62K SF office · 6 floors · built 1882 · 3 min to 14 St-Union SqAverage floor: about 13,700 SF
  66. 45 East 20th StreetOffice building with commercial space · 62K SF office · 12 floors · built 1911 · 2 min to 23 St-Baruch CollegeAverage floor: about 5,500 SF
  67. 41 East 21st StreetSelf-storage building · 61K SF industrial and storage · 5 floors · built 1955 · 2 min to 23 St-Baruch CollegeAverage floor: about 12,300 SF
  68. 235 Park Avenue SouthOffice building with commercial space · 59K SF office · 12 floors · built 1921 · 3 min to 23 St-Baruch CollegeAverage floor: about 5,600 SF
  69. 30 West 21st StreetOffice building with commercial space · 58K SF office · 15 floors · built 1907 · 3 min to 23 StAverage floor: about 4,100 SF
  70. Simpson, Crawford & Simpson Building, 635 Avenue of the AmericasOffice building with commercial space · 57K SF office · 8 floors · built 1902 · 3 min to 18 StAverage floor: about 9,600 SF
  71. Alexander Building, 636 Avenue of the AmericasCommercial condominium · 56K SF office · 7 floors · built 1896 · 4 min to 23 StAverage floor: about 10,500 SF
  72. 121 East 24th StreetOffice building with commercial space · 55K SF office · 12 floors · built 1913 · 2 min to 23 St-Baruch CollegeAverage floor: about 4,900 SF
  73. 56 West 22nd StreetOffice building with commercial space · 51K SF office · 12 floors · built 1908 · 1 min to 23 StAverage floor: about 4,600 SF
  74. 590 Avenue of the AmericasCommercial condominium · 50K SF office · 16 floors · built 1988 · 1 min to 14 St
  75. 119 Fifth AvenueOffice building with commercial space · 50K SF office · 8 floors · built 1906 · 4 min to 23 StAverage floor: about 7,100 SF
  76. 12 West 21st StreetOffice building with commercial space · 50K SF office · 12 floors · built 1907 · 3 min to 23 StAverage floor: about 4,900 SF
  77. 45 West 21st StreetOffice building with commercial space · 50K SF office · 6 floors · built 1902 · 2 min to 23 StAverage floor: about 11,700 SF
  78. 895 BroadwayOffice building with commercial space · 50K SF office · 5 floors · built 1869 · 3 min to 23 StAverage floor: about 11,400 SF
  79. 18 West 21st StreetOffice building with commercial space · 49K SF office · 11 floors · built 1907 · 3 min to 23 StAverage floor: about 4,900 SF
  80. 19 West 24th StreetOffice building with commercial space · 48K SF office · 12 floors · built 1910 · 3 min to 23 StAverage floor: about 4,300 SF
  81. 6 West 18th StreetOffice building with commercial space · 47K SF office · 12 floors · built 1910 · 4 min to 14 StAverage floor: about 4,300 SF
  82. 873 BroadwayOffice building with commercial space · 47K SF office · 8 floors · built 1880 · 3 min to 14 St-Union Sq
  83. 151 West 19th StreetOffice building with commercial space · 45K SF office · 12 floors · built 1912 · 2 min to 18 StAverage floor: about 4,100 SF
  84. Mercantile Building, 48 West 21st StreetOffice building with commercial space · 44K SF office · 12 floors · built 1908 · 3 min to 23 StAverage floor: about 4,000 SF
  85. Stiehl Building, 31 West 19th StreetOffice building with commercial space · 43K SF office · 6 floors · built 1903 · 4 min to 23 StAverage floor: about 8,600 SF
  86. 33 West 17th StreetOffice building with commercial space · 42K SF office · 11 floors · built 1908 · 3 min to 14 StAverage floor: about 4,400 SF
  87. 36 West 20th StreetOffice building with commercial space · 41K SF office · 11 floors · built 1907 · 4 min to 23 StAverage floor: about 4,500 SF
  88. 61 West 23rd StreetOffice building with commercial space · 40K SF office · 7 floors · built 1920 · 1 min to 23 StAverage floor: about 6,700 SF
  89. 7 West 18th StreetOffice building with commercial space · 39K SF office · 9 floors · built 1897 · 4 min to 14 StAverage floor: about 4,800 SF
  90. Bradbury Building, 142 Fifth AvenueOffice building with commercial space · 39K SF office · 10 floors · built 1899 · 4 min to 23 St
  91. Price Building, 604 Avenue of the AmericasRetail building · 37K SF retail · 4 floors · built 1912 · 2 min to 14 StAverage floor: about 13,300 SF
  92. 114 East 25th StreetOffice building with commercial space · 37K SF office · 12 floors · built 1921 · 2 min to 23 St-Baruch CollegeAverage floor: about 3,600 SF
  93. 137 Fifth AvenueOffice building with commercial space · 36K SF office · 12 floors · built 1902 · 3 min to 23 StAverage floor: about 3,200 SF

Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16. 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. Average floor sizes are shown only for buildings with at least 3 floors and at least 60% of their area in the largest use.

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