Supplemental Guarantor Information - Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ (81,049)	$ (160,469)	$ (174,642)
Cash flows from investing activities:
Capital expenditures	(15,964)	(14,553)	(10,761)
Investments in unconsolidated entities	(4,944)	(5,218)	(3,879)
Return of capital from unconsolidated entities	24,245	1,703	510
Increases in restricted cash	(5,546)	(15,608)	(4,790)
Decreases in restricted cash	29,586	1,645	209,072
Advances to/from subsidiaries	0	0
Net cash provided by (used in) investing activities	27,377	(32,031)	190,152
Cash flows from financing activities:
Repayment of debt	(18,573)	(307,602)	(184,723)
Proceeds from issuance of new debt	0	325,000	397,082
Repayment of cash secured loans	0	0	(205,000)
Debt issuance costs	(126)	(5,490)	(5,548)
Borrowings from credit facility	75,000	0	0
Repayment of borrowings from credit facility	(75,000)	0	0
Settlement of unconsolidated entity debt obligation	0	0	(500)
Other changes	(200)	287	(157)
Dividends paid	0
Advances to/from subsidiaries	0	0	0
Cash and cash equivalents at beginning of period	324,154	504,459	487,795
Cash and cash equivalents at end of period	251,583	324,154	504,459
Net cash (used in) provided by financing activities	(18,899)	12,195	1,154
(Decrease) increase in cash and cash equivalents	(72,571)	(180,305)	16,664
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(388,584)	(119,074)	(89,306)
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	(2,982)	(14,111)	(3,460)
Decreases in restricted cash	27,751	39	208,487
Advances to/from subsidiaries	302,569	(78,951)
Net cash provided by (used in) investing activities	327,338	(93,023)	205,027
Cash flows from financing activities:
Repayment of debt	(8,703)	(305,061)	(184,250)
Proceeds from issuance of new debt		325,000	397,082
Repayment of cash secured loans			(205,000)
Debt issuance costs	(126)	(5,490)	(5,548)
Borrowings from credit facility	75,000
Repayment of borrowings from credit facility	(75,000)
Settlement of unconsolidated entity debt obligation			0
Other changes	(200)	287	(157)
Dividends paid	500
Advances to/from subsidiaries	21	0	(99,901)
Cash and cash equivalents at beginning of period	301,980	499,341	481,394
Cash and cash equivalents at end of period	232,226	301,980	499,341
Net cash (used in) provided by financing activities	(8,508)	14,736	(97,774)
(Decrease) increase in cash and cash equivalents	(69,754)	(197,361)	17,947
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	307,668	(41,429)	(86,300)
Cash flows from investing activities:
Capital expenditures	(15,964)	(14,553)	(10,761)
Investments in unconsolidated entities	(4,944)	(5,218)	(3,879)
Return of capital from unconsolidated entities	24,245	1,703	510
Increases in restricted cash	(2,564)	(1,497)	(1,330)
Decreases in restricted cash	1,835	1,606	585
Advances to/from subsidiaries	0	0
Net cash provided by (used in) investing activities	2,608	(17,959)	(14,875)
Cash flows from financing activities:
Repayment of debt	(9,870)	(2,541)	(473)
Proceeds from issuance of new debt		0	0
Repayment of cash secured loans			0
Debt issuance costs	0	0	0
Borrowings from credit facility	0
Repayment of borrowings from credit facility	0
Settlement of unconsolidated entity debt obligation			(500)
Other changes	0	0	0
Dividends paid	0
Advances to/from subsidiaries	(300,897)	77,639	100,257
Cash and cash equivalents at beginning of period	22,034	6,324	8,215
Cash and cash equivalents at end of period	21,543	22,034	6,324
Net cash (used in) provided by financing activities	(310,767)	75,098	99,284
(Decrease) increase in cash and cash equivalents	(491)	15,710	(1,891)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(133)	34	964
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	25	0
Net cash provided by (used in) investing activities	25	0	0
Cash flows from financing activities:
Repayment of debt	0	0	0
Proceeds from issuance of new debt		0	0
Repayment of cash secured loans			0
Debt issuance costs	0	0	0
Borrowings from credit facility	0
Repayment of borrowings from credit facility	0
Settlement of unconsolidated entity debt obligation			0
Other changes	0	0	0
Dividends paid	(500)
Advances to/from subsidiaries	0	(57)	27
Cash and cash equivalents at beginning of period	1,614	1,637	646
Cash and cash equivalents at end of period	1,006	1,614	1,637
Net cash (used in) provided by financing activities	(500)	(57)	27
(Decrease) increase in cash and cash equivalents	(608)	(23)	991
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	(302,594)	78,951
Net cash provided by (used in) investing activities	(302,594)	78,951	0
Cash flows from financing activities:
Repayment of debt	0	0	0
Proceeds from issuance of new debt		0	0
Repayment of cash secured loans			0
Debt issuance costs	0	0	0
Borrowings from credit facility	0
Repayment of borrowings from credit facility	0
Settlement of unconsolidated entity debt obligation			0
Other changes	0	0	0
Dividends paid	0
Advances to/from subsidiaries	300,876	(77,582)	(383)
Cash and cash equivalents at beginning of period	(1,474)	(2,843)	(2,460)
Cash and cash equivalents at end of period	(3,192)	(1,474)	(2,843)
Net cash (used in) provided by financing activities	300,876	(77,582)	(383)
(Decrease) increase in cash and cash equivalents	$ (1,718)	$ 1,369	$ (383)