Table 4. Estimates of the Total Housing Inventory for the United States: Third Quarter 2001 and 2000 (Estimates are in thousands and may not add to total, due to rounding) Third Third Standard quarter quarter error on Standard 2001 Type 2001 2000 2001 error on Percent estimate estimate estimate difference of total All housing units................. 121,195 119,785 232 329 100 Occupied........................ 106,847 105,800 243 345 88 Owner occupied................ 72,774 71,637 244 345 60 Renter occupied............... 34,073 34,163 196 277 28 Vacant.......................... 14,348 13,985 135 190 12 Year-round vacant............. 10,857 10,597 119 167 9 For rent.................... 3,164 3,098 66 92 3 For sale only............... 1,410 1,180 44 60 1 Rented or sold, awaiting occupancy.......... 967 1,028 37 53 1 Held off market............. 5,316 5,291 85 120 4 For occasional use........ 1,905 1,919 51 72 2 Temporarily occupied by persons with usual residence elsewhere. 965 989 37 52 1 For other reasons......... 2,446 2,383 58 81 2 Seasonal vacant............... 3,491 3,388 69 97 3