Table 4. Estimates of the Total Housing Inventory for the United States: Fourth Quarter 2000 and 1999 (Estimates are in thousands and may not add to total, due to rounding) Fourth Fourth Standard quarter quarter error on Standard 2000 Type 2000 1999 2000 error on Percent estimate estimate estimate difference of total All housing units................. 120,144 118,827 233 330 100 Occupied........................ 106,493 105,286 244 345 89 Owner occupied................ 71,906 70,455 244 344 60 Renter occupied............... 34,587 34,831 197 279 29 Vacant.......................... 13,651 13,541 132 187 11 Year-round vacant............. 10,201 10,428 116 164 8 For rent.................... 2,970 3,046 64 91 2 For sale only............... 1,188 1,181 40 57 1 Rented or sold, awaiting occupancy.......... 751 856 32 47 1 Held off market............. 5,292 5,345 84 120 4 For occasional use........ 1,784 1,929 50 71 1 Temporarily occupied by persons with usual residence elsewhere. 1,005 908 37 51 1 For other reasons......... 2,503 2,508 59 83 2 Seasonal vacant............... 3,450 3,113 69 95 3