Supplemental Guarantor Information - Unaudited Consolidating Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 459,937	$ 429,438	$ 1,189,993	$ 994,561
Home construction and land sales expenses	370,367	353,081	980,094	829,073
Inventory impairments and abandonments	11,917	249	15,098	249
Gross profit	77,653	76,108	194,801	165,239
Commissions	17,500	17,246	45,856	40,141
General and administrative expenses	40,457	37,669	111,024	101,837
Depreciation and amortization	3,387	3,497	9,434	8,619
Operating income	16,309	17,696	28,487	14,642
Equity in income of unconsolidated entities	62	153	71	377
Loss on extinguishment of debt	429	0	(2,030)	0
Other (expense) income, net	(5,344)	(5,763)	(18,467)	(23,670)
(Loss) income before income taxes	11,456	12,086	8,061	(8,651)
(Benefit from) provision for income taxes	5,349	(135)	2,067	(726)
Equity in income of subsidiaries	0	0	0	0
Income (loss) from continuing operations	6,107	12,221	5,994	(7,925)
Loss from discontinued operations, net of tax	(325)	(46)	(447)	(4,236)
Equity in income (loss) of subsidiaries from discontinued operations	0	0	0	0
Net income (loss)	5,782	12,175	5,547	(12,161)
Change in unrealized loss related to available-for-sale securities	0	0	0	1,276
Comprehensive income (loss)	5,782	12,175	5,547	(10,885)
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Total revenue	(28)	(33)	(128)	(165)
Home construction and land sales expenses	(28)	(33)	(128)	(165)
Inventory impairments and abandonments	0	0	0	0
Gross profit	0	0	0	0
Commissions	0	0	0	0
General and administrative expenses	0	0	0	0
Depreciation and amortization	0	0	0	0
Operating income	0	0	0	0
Equity in income of unconsolidated entities	0	0	0	0
Loss on extinguishment of debt	0		0
Other (expense) income, net	0	0	0	0
(Loss) income before income taxes	0	0	0	0
(Benefit from) provision for income taxes	0	0	0	0
Equity in income of subsidiaries	(19,257)	(24,520)	(43,133)	(26,709)
Income (loss) from continuing operations	(19,257)	(24,520)	(43,133)	(26,709)
Loss from discontinued operations, net of tax	0	0	0	0
Equity in income (loss) of subsidiaries from discontinued operations	325	46	447	4,236
Net income (loss)	(18,932)		(42,686)	(22,473)
Change in unrealized loss related to available-for-sale securities				0
Comprehensive income (loss)		(24,474)		(22,473)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Total revenue	0	0	0	0
Home construction and land sales expenses	20,080	13,548	49,520	31,524
Inventory impairments and abandonments	626	0	710	0
Gross profit	(20,706)	(13,548)	(50,230)	(31,524)
Commissions	0	0	0	0
General and administrative expenses	0	0	0	0
Depreciation and amortization	0	0	0	0
Operating income	(20,706)	(13,548)	(50,230)	(31,524)
Equity in income of unconsolidated entities	0	0	0	0
Loss on extinguishment of debt	429		(2,030)
Other (expense) income, net	(5,406)	(5,955)	(19,471)	(23,396)
(Loss) income before income taxes	(25,683)	(19,503)	(71,731)	(54,920)
(Benefit from) provision for income taxes	(12,533)	(7,204)	(34,592)	(20,286)
Equity in income of subsidiaries	19,257	24,520	43,133	26,709
Income (loss) from continuing operations	6,107	12,221	5,994	(7,925)
Loss from discontinued operations, net of tax	0	0	0	0
Equity in income (loss) of subsidiaries from discontinued operations	(325)	(46)	(447)	(4,236)
Net income (loss)	5,782		5,547	(12,161)
Change in unrealized loss related to available-for-sale securities				1,276
Comprehensive income (loss)		12,175		(10,885)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total revenue	459,937	429,438	1,189,993	994,561
Home construction and land sales expenses	350,315	339,566	930,702	797,714
Inventory impairments and abandonments	11,291	249	14,388	249
Gross profit	98,331	89,623	244,903	196,598
Commissions	17,500	17,246	45,856	40,141
General and administrative expenses	40,435	37,641	110,944	101,749
Depreciation and amortization	3,387	3,497	9,434	8,619
Operating income	37,009	31,239	78,669	46,089
Equity in income of unconsolidated entities	62	153	71	377
Loss on extinguishment of debt	0		0
Other (expense) income, net	63	193	1,006	(270)
(Loss) income before income taxes	37,134	31,585	79,746	46,196
(Benefit from) provision for income taxes	17,880	7,067	36,642	19,533
Equity in income of subsidiaries	0	0	0	0
Income (loss) from continuing operations	19,254	24,518	43,104	26,663
Loss from discontinued operations, net of tax	(322)	(43)	(437)	(4,226)
Equity in income (loss) of subsidiaries from discontinued operations	0	0	0	0
Net income (loss)	18,932		42,667	22,437
Change in unrealized loss related to available-for-sale securities				0
Comprehensive income (loss)		24,475		22,437
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total revenue	28	33	128	165
Home construction and land sales expenses	0	0	0	0
Inventory impairments and abandonments	0	0	0	0
Gross profit	28	33	128	165
Commissions	0	0	0	0
General and administrative expenses	22	28	80	88
Depreciation and amortization	0	0	0	0
Operating income	6	5	48	77
Equity in income of unconsolidated entities	0	0	0	0
Loss on extinguishment of debt	0		0
Other (expense) income, net	(1)	(1)	(2)	(4)
(Loss) income before income taxes	5	4	46	73
(Benefit from) provision for income taxes	2	2	17	27
Equity in income of subsidiaries	0	0	0	0
Income (loss) from continuing operations	3	2	29	46
Loss from discontinued operations, net of tax	(3)	(3)	(10)	(10)
Equity in income (loss) of subsidiaries from discontinued operations	0	0	0	0
Net income (loss)	$ 0		$ 19	36
Change in unrealized loss related to available-for-sale securities				0
Comprehensive income (loss)		$ (1)		$ 36