Exhibit 12 Computation of Ratios of Earnings to Fixed Charges Twelve months ended October 31, 1998 1999 2000 2001 2002 ---------------------------------------------------------------------------------- Earnings: Income before income taxes $134,293 $162,750 $230,966 $337,889 $347,318 Interest expense 36,246 40,497 46,816 59,038 65,344 Rent expense 293 425 639 852 930 Amortization 610 618 635 897 1,037 ---------------------------------------------------------------------------------- $171,442 $204,290 $279,056 $398,676 $414,629 ================================================================================== Fixed charges: Homebuilding Interest incurred $38,525 $51,515 $60,275 $79,245 $90,331 Rent expense 293 425 639 852 930 Amortization 610 618 635 897 1,037 ---------------------------------------------------------------------------------- $39,428 $52,558 $61,549 $80,994 $92,298 ================================================================================== Ratio 4.35 3.89 4.53 4.92 4.49