Supplemental Guarantor Information - Unaudited Consolidating Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 429,438	$ 354,671	$ 994,561	$ 917,862
Home construction and land sales expenses	353,081	283,857	829,073	739,295
Inventory impairments and option contract abandonments	249	2,010	249	2,921
Gross profit	76,108	68,804	165,239	175,646
Commissions	17,246	14,322	40,141	37,239
General and administrative expenses	37,669	35,994	101,837	97,032
Depreciation and amortization	3,497	3,400	8,619	9,138
Operating income	17,696	15,088	14,642	32,237
Equity in income (loss) of unconsolidated entities	153	(81)	377	221
Loss on extinguishment of debt	0	(19,764)	0	(19,917)
Other (expense) income, net	(5,763)	(10,205)	(23,670)	(39,689)
(Loss) income before income taxes	12,086	(14,962)	(8,651)	(27,148)
(Benefit from) provision for income taxes	(135)	(1,769)	(726)	(1,783)
Equity in income of subsidiaries	0	0	0	0
Income (loss) from continuing operations	12,221	(13,193)	(7,925)	(25,365)
Income (loss) from discontinued operations, net of tax	(46)	838	(4,236)	(99)
Equity in loss of subsidiaries from discontinued operations	0	0	0	0
Net income (loss)	12,175	(12,355)	(12,161)	(25,464)
Change in unrealized loss related to available-for-sale securities	0	0	1,276	0
Comprehensive income (loss)	12,175	(12,355)	(10,885)	(25,464)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Total revenue	0	0	0	0
Home construction and land sales expenses	13,548	9,430	31,524	23,944
Inventory impairments and option contract abandonments	0	0	0	0
Gross profit	(13,548)	(9,430)	(31,524)	(23,944)
Commissions	0	0	0	0
General and administrative expenses	0	0	0	0
Depreciation and amortization	0	0	0	0
Operating income	(13,548)	(9,430)	(31,524)	(23,944)
Equity in income (loss) of unconsolidated entities	0	0	0	0
Loss on extinguishment of debt		(19,764)		(19,917)
Other (expense) income, net	(5,955)	(10,421)	(23,396)	(41,112)
(Loss) income before income taxes	(19,503)	(39,615)	(54,920)	(84,973)
(Benefit from) provision for income taxes	(7,204)	(4,730)	(20,286)	(4,928)
Equity in income of subsidiaries	24,520	21,692	26,709	54,680
Income (loss) from continuing operations	12,221	(13,193)	(7,925)	(25,365)
Income (loss) from discontinued operations, net of tax	0	0	0	0
Equity in loss of subsidiaries from discontinued operations	(46)	838	(4,236)	(99)
Net income (loss)		(12,355)	(12,161)	(25,464)
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	429,438	354,671	994,561	917,862
Home construction and land sales expenses	339,566	274,527	797,714	715,630
Inventory impairments and option contract abandonments	249	2,010	249	2,921
Gross profit	89,623	78,134	196,598	199,311
Commissions	17,246	14,322	40,141	37,239
General and administrative expenses	37,641	35,967	101,749	96,944
Depreciation and amortization	3,497	3,400	8,619	9,138
Operating income	31,239	24,445	46,089	55,990
Equity in income (loss) of unconsolidated entities	153	(81)	377	221
Loss on extinguishment of debt		0		0
Other (expense) income, net	193	216	(270)	1,427
(Loss) income before income taxes	31,585	24,580	46,196	57,638
(Benefit from) provision for income taxes	7,067	2,935	19,533	3,079
Equity in income of subsidiaries	0	0	0	0
Income (loss) from continuing operations	24,518	21,645	26,663	54,559
Income (loss) from discontinued operations, net of tax	(43)	842	(4,226)	(88)
Equity in loss of subsidiaries from discontinued operations	0	0	0	0
Net income (loss)		22,487	22,437	54,471
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	33	100	165	279
Home construction and land sales expenses	0	0	0	0
Inventory impairments and option contract abandonments	0	0	0	0
Gross profit	33	100	165	279
Commissions	0	0	0	0
General and administrative expenses	28	27	88	88
Depreciation and amortization	0	0	0	0
Operating income	5	73	77	191
Equity in income (loss) of unconsolidated entities	0	0	0	0
Loss on extinguishment of debt		0		0
Other (expense) income, net	(1)	0	(4)	(4)
(Loss) income before income taxes	4	73	73	187
(Benefit from) provision for income taxes	2	26	27	66
Equity in income of subsidiaries	0	0	0	0
Income (loss) from continuing operations	2	47	46	121
Income (loss) from discontinued operations, net of tax	(3)	(4)	(10)	(11)
Equity in loss of subsidiaries from discontinued operations	0	0	0	0
Net income (loss)		43	36	110
Change in unrealized loss related to available-for-sale securities			0
Comprehensive income (loss)	(1)		36
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Total revenue	(33)	(100)	(165)	(279)
Home construction and land sales expenses	(33)	(100)	(165)	(279)
Inventory impairments and option contract 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 (loss) 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	(24,520)	(21,692)	(26,709)	(54,680)
Income (loss) from continuing operations	(24,520)	(21,692)	(26,709)	(54,680)
Income (loss) from discontinued operations, net of tax	0	0	0	0
Equity in loss of subsidiaries from discontinued operations	46	(838)	4,236	99
Net income (loss)		$ (22,530)	(22,473)	$ (54,581)
Change in unrealized loss related to available-for-sale securities			0
Comprehensive income (loss)	$ (24,474)		$ (22,473)