Supplemental Guarantor Information - Unaudited Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	$ (30,869)	$ (238,140)
Cash flows from investing activities:
Capital expenditures	(9,718)	(11,756)
Proceeds from sale of fixed assets	2,549	0
Investments in unconsolidated entities	(3,138)	(2,651)
Proceeds from sale of unconsolidated entities	1,142	24,245
Increases in restricted cash	(4,679)	(3,806)
Decreases in restricted cash	24,734	28,936
Advances to/from subsidiaries	0	0
Net cash provided by investing activities	10,890	34,968
Cash flows from financing activities:
Repayment of debt	(239,312)	(11,934)
Proceeds from issuance of new debt	137,900	0
Borrowings from credit facility	50,000	50,000
Repayment of borrowings from credit facility	(50,000)	(30,000)
Debt issuance costs	(2,545)	(126)
Dividends paid		0
Advances to/from subsidiaries	0	0
Other financing activities	(438)	(170)
Net cash (used in) provided by financing activities	(104,395)	7,770
Decrease in cash and cash equivalents	(124,374)	(195,402)
Cash and cash equivalents at beginning of period	251,583	324,154
Cash and cash equivalents at end of period	127,209	128,752
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	0	0
Cash flows from investing activities:
Capital expenditures	0	0
Proceeds from sale of fixed assets	0
Investments in unconsolidated entities	0	0
Proceeds from sale of unconsolidated entities	0	0
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Advances to/from subsidiaries	(26,409)	169,538
Net cash provided by investing activities	(26,409)	169,538
Cash flows from financing activities:
Repayment of debt	0	0
Proceeds from issuance of new debt	0
Borrowings from credit facility	0	0
Repayment of borrowings from credit facility	0	0
Debt issuance costs	0	0
Dividends paid		0
Advances to/from subsidiaries	24,308	(170,305)
Other financing activities	0	0
Net cash (used in) provided by financing activities	24,308	(170,305)
Decrease in cash and cash equivalents	(2,101)	(767)
Cash and cash equivalents at beginning of period	(3,192)	(1,474)
Cash and cash equivalents at end of period	(5,293)	(2,241)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(50,272)	(55,814)
Cash flows from investing activities:
Capital expenditures	0	0
Proceeds from sale of fixed assets	0
Investments in unconsolidated entities	0	0
Proceeds from sale of unconsolidated entities	0	0
Increases in restricted cash	(2,292)	(2,025)
Decreases in restricted cash	22,368	27,750
Advances to/from subsidiaries	26,409	(169,563)
Net cash provided by investing activities	46,485	(143,838)
Cash flows from financing activities:
Repayment of debt	(233,429)	(10,390)
Proceeds from issuance of new debt	137,900
Borrowings from credit facility	50,000	50,000
Repayment of borrowings from credit facility	(50,000)	(30,000)
Debt issuance costs	(2,545)	(126)
Dividends paid		500
Advances to/from subsidiaries	0	0
Other financing activities	(438)	(170)
Net cash (used in) provided by financing activities	(98,512)	9,814
Decrease in cash and cash equivalents	(102,299)	(189,838)
Cash and cash equivalents at beginning of period	232,226	301,980
Cash and cash equivalents at end of period	129,927	112,142
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	19,547	(182,157)
Cash flows from investing activities:
Capital expenditures	(9,718)	(11,756)
Proceeds from sale of fixed assets	2,549
Investments in unconsolidated entities	(3,138)	(2,651)
Proceeds from sale of unconsolidated entities	1,142	24,245
Increases in restricted cash	(2,387)	(1,781)
Decreases in restricted cash	2,366	1,186
Advances to/from subsidiaries	0	0
Net cash provided by investing activities	(9,186)	9,243
Cash flows from financing activities:
Repayment of debt	(5,883)	(1,544)
Proceeds from issuance of new debt	0
Borrowings from credit facility	0	0
Repayment of borrowings from credit facility	0	0
Debt issuance costs	0	0
Dividends paid		0
Advances to/from subsidiaries	(24,319)	170,305
Other financing activities	0	0
Net cash (used in) provided by financing activities	(30,202)	168,761
Decrease in cash and cash equivalents	(19,841)	(4,153)
Cash and cash equivalents at beginning of period	21,543	22,034
Cash and cash equivalents at end of period	1,702	17,881
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(144)	(169)
Cash flows from investing activities:
Capital expenditures	0	0
Proceeds from sale of fixed assets	0
Investments in unconsolidated entities	0	0
Proceeds from sale of unconsolidated entities	0	0
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Advances to/from subsidiaries	0	25
Net cash provided by investing activities	0	25
Cash flows from financing activities:
Repayment of debt	0	0
Proceeds from issuance of new debt	0
Borrowings from credit facility	0	0
Repayment of borrowings from credit facility	0	0
Debt issuance costs	0	0
Dividends paid		(500)
Advances to/from subsidiaries	11	0
Other financing activities	0	0
Net cash (used in) provided by financing activities	11	(500)
Decrease in cash and cash equivalents	(133)	(644)
Cash and cash equivalents at beginning of period	1,006	1,614
Cash and cash equivalents at end of period	$ 873	$ 970