Supplemental Guarantor Information - Consolidating Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ (160,469)	$ (174,642)	$ (20,845)
Cash flows from investing activities:
Capital expenditures	(14,553)	(10,761)	(17,363)
Investments in unconsolidated entities	(5,218)	(3,879)	(2,407)
Return of capital from unconsolidated entities	1,703	510	610
Increases in restricted cash	(15,608)	(4,790)	(3,260)
Decreases in restricted cash	1,645	209,072	27,058
Advances to/from subsidiaries	0
Net cash (used in) provided by investing activities	(32,031)	190,152	4,638
Cash flows from financing activities:
Repayment of debt	(307,602)	(184,723)	(290,387)
Proceeds from issuance of new debt	325,000	397,082	300,000
Repayment of cash secured loans	0	(205,000)	(20,000)
Debt issuance costs	(5,490)	(5,548)	(10,845)
Proceeds from issuance of common stock, net	0	0	60,340
Proceeds from issuance of TEU prepaid stock purchase contracts, net	0	0	88,361
Proceeds from issuance of TEU amortizing notes	0	0	23,500
Settlement of unconsolidated entity debt obligation	0	(500)	(15,862)
Other changes	287	(157)	(1,508)
Dividends paid			0
Advances to/from parent	0	0	0
Cash and cash equivalents at beginning of period	504,459	487,795	370,403
Cash and cash equivalents at end of period	324,154	504,459	487,795
Net cash provided by financing activities	12,195	1,154	133,599
(Decrease) increase in cash and cash equivalents	(180,305)	16,664	117,392
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(119,074)	(89,306)	(110,429)
Cash flows from investing activities:
Capital expenditures	0	0	0
Investments in unconsolidated entities	0	0	0
Return of capital from unconsolidated entities	0	0	0
Increases in restricted cash	(14,111)	(3,460)	(2,100)
Decreases in restricted cash	39	208,487	25,919
Advances to/from subsidiaries	(78,951)
Net cash (used in) provided by investing activities	(93,023)	205,027	23,819
Cash flows from financing activities:
Repayment of debt	(305,061)	(184,250)	(289,063)
Proceeds from issuance of new debt	325,000	397,082	300,000
Repayment of cash secured loans		(205,000)	(20,000)
Debt issuance costs	(5,490)	(5,548)	(10,845)
Proceeds from issuance of common stock, net			60,340
Proceeds from issuance of TEU prepaid stock purchase contracts, net			88,361
Proceeds from issuance of TEU amortizing notes			23,500
Settlement of unconsolidated entity debt obligation		0	(15,862)
Other changes	287	(157)	(1,508)
Dividends paid			2,300
Advances to/from parent	0	(99,901)	70,058
Cash and cash equivalents at beginning of period	499,341	481,394	360,723
Cash and cash equivalents at end of period	301,980	499,341	481,394
Net cash provided by financing activities	14,736	(97,774)	207,281
(Decrease) increase in cash and cash equivalents	(197,361)	17,947	120,671
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(41,429)	(86,300)	88,806
Cash flows from investing activities:
Capital expenditures	(14,553)	(10,761)	(17,363)
Investments in unconsolidated entities	(5,218)	(3,879)	(2,407)
Return of capital from unconsolidated entities	1,703	510	610
Increases in restricted cash	(1,497)	(1,330)	(1,160)
Decreases in restricted cash	1,606	585	1,139
Advances to/from subsidiaries	0
Net cash (used in) provided by investing activities	(17,959)	(14,875)	(19,181)
Cash flows from financing activities:
Repayment of debt	(2,541)	(473)	(1,324)
Proceeds from issuance of new debt	0	0	0
Repayment of cash secured loans		0	0
Debt issuance costs	0	0	0
Proceeds from issuance of common stock, net			0
Proceeds from issuance of TEU prepaid stock purchase contracts, net			0
Proceeds from issuance of TEU amortizing notes			0
Settlement of unconsolidated entity debt obligation		(500)	0
Other changes	0	0	0
Dividends paid			0
Advances to/from parent	77,639	100,257	(70,574)
Cash and cash equivalents at beginning of period	6,324	8,215	10,488
Cash and cash equivalents at end of period	22,034	6,324	8,215
Net cash provided by financing activities	75,098	99,284	(71,898)
(Decrease) increase in cash and cash equivalents	15,710	(1,891)	(2,273)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	34	964	778
Cash flows from investing activities:
Capital expenditures	0	0	0
Investments in unconsolidated entities	0	0	0
Return of capital from unconsolidated entities	0	0	0
Increases in restricted cash	0	0	0
Decreases in restricted cash	0	0	0
Advances to/from subsidiaries	0
Net cash (used in) provided by investing activities	0	0	0
Cash flows from financing activities:
Repayment of debt	0	0	0
Proceeds from issuance of new debt	0	0	0
Repayment of cash secured loans		0	0
Debt issuance costs	0	0	0
Proceeds from issuance of common stock, net			0
Proceeds from issuance of TEU prepaid stock purchase contracts, net			0
Proceeds from issuance of TEU amortizing notes			0
Settlement of unconsolidated entity debt obligation		0	0
Other changes	0	0	0
Dividends paid			(2,300)
Advances to/from parent	(57)	27	1,750
Cash and cash equivalents at beginning of period	1,637	646	418
Cash and cash equivalents at end of period	1,614	1,637	646
Net cash provided by financing activities	(57)	27	(550)
(Decrease) increase in cash and cash equivalents	(23)	991	228
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0	0	0
Cash flows from investing activities:
Capital expenditures	0	0	0
Investments in unconsolidated entities	0	0	0
Return of capital from unconsolidated entities	0	0	0
Increases in restricted cash	0	0	0
Decreases in restricted cash	0	0	0
Advances to/from subsidiaries	78,951
Net cash (used in) provided by investing activities	78,951	0	0
Cash flows from financing activities:
Repayment of debt	0	0	0
Proceeds from issuance of new debt	0	0	0
Repayment of cash secured loans		0	0
Debt issuance costs	0	0	0
Proceeds from issuance of common stock, net			0
Proceeds from issuance of TEU prepaid stock purchase contracts, net			0
Proceeds from issuance of TEU amortizing notes			0
Settlement of unconsolidated entity debt obligation		0	0
Other changes	0	0	0
Dividends paid			0
Advances to/from parent	(77,582)	(383)	(1,234)
Cash and cash equivalents at beginning of period	(2,843)	(2,460)	(1,226)
Cash and cash equivalents at end of period	(1,474)	(2,843)	(2,460)
Net cash provided by financing activities	(77,582)	(383)	(1,234)
(Decrease) increase in cash and cash equivalents	$ 1,369	$ (383)	$ (1,234)