Supplemental Guarantor Information - Consolidating Statement of Operations (Details) (USD $)	3 Months Ended																12 Months Ended
	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 545,905,000		$ 354,671,000		$ 270,021,000		$ 293,170,000		$ 438,334,000		$ 314,439,000		$ 287,902,000		$ 246,902,000		$ 1,463,767,000	$ 1,287,577,000	$ 1,005,677,000
Home construction and land sales expenses																	1,192,001,000	1,070,814,000	888,379,000
Inventory impairments and option contract abandonments	5,386,000		2,010,000		880,000		31,000		404,000		0		2,025,000		204,000		8,307,000	2,633,000	12,210,000
Gross profit	87,813,000	[1]	68,804,000	[1]	52,172,000	[1]	54,670,000	[1]	80,046,000	[1]	54,115,000	[1]	43,885,000	[1]	36,084,000	[1]	263,459,000	214,130,000	105,088,000
Commissions																	58,028,000	52,922,000	43,585,000
General and administrative expenses																	136,463,000	121,163,000	110,051,000
Depreciation and amortization																	13,279,000	12,784,000	13,510,000
Operating income (loss)	23,452,000		15,088,000		5,617,000		11,532,000		22,079,000		8,472,000		311,000		(3,601,000)		55,689,000	27,261,000	(62,058,000)
Equity in income (loss) of unconsolidated entities																	6,545,000	(113,000)	304,000
Loss on extinguishment of debt	0		(19,764,000)		(153,000)		0		(998,000)		0		(3,638,000)		0		(19,917,000)	(4,636,000)	(45,097,000)
Other expense, net																	(49,191,000)	(58,165,000)	(69,119,000)
Loss from continuing operations before income taxes																	(6,874,000)	(35,653,000)	(175,970,000)
Benefit from income taxes																	(41,797,000)	(3,489,000)	(40,347,000)
Equity in income of subsidiaries																	0	0	0
Income (loss) from continuing operations	60,288,000	[2]	(13,193,000)	[2]	(8,224,000)	[2]	(3,948,000)	[2]	11,328,000	[2]	(5,442,000)	[2]	(19,111,000)	[2]	(18,939,000)	[2]	34,923,000	(32,164,000)	(135,623,000)
Loss from discontinued operations, net of tax																	(540,000)	(1,704,000)	(9,703,000)
Equity in loss of subsidiaries																	0	0	0
Net income (loss)																	34,383,000	(33,868,000)	(145,326,000)
Unrealized loss related to available-for-sale securities																	(1,276,000)	0	0
Comprehensive income (loss)																	33,107,000	(33,868,000)	(145,326,000)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Total revenue																	0	0	0
Home construction and land sales expenses																	39,255,000	41,246,000	60,952,000
Inventory impairments and option contract abandonments																	245,000	0	275,000
Gross profit																	(39,500,000)	(41,246,000)	(61,227,000)
Commissions																	0	0	0
General and administrative expenses																	0	0	0
Depreciation and amortization																	0	0	0
Operating income (loss)																	(39,500,000)	(41,246,000)	(61,227,000)
Equity in income (loss) of unconsolidated entities																	0	0	0
Loss on extinguishment of debt																	(19,917,000)	(4,636,000)	(45,097,000)
Other expense, net																	(50,786,000)	(59,458,000)	(71,474,000)
Loss from continuing operations before income taxes																	(110,203,000)	(105,340,000)	(177,798,000)
Benefit from income taxes																	(14,247,000)	(10,765,000)	(68,026,000)
Equity in income of subsidiaries																	130,879,000	62,411,000	(25,851,000)
Income (loss) from continuing operations																	34,923,000	(32,164,000)	(135,623,000)
Loss from discontinued operations, net of tax																	0	0	0
Equity in loss of subsidiaries																	(540,000)	(1,704,000)	(9,703,000)
Net income (loss)																	34,383,000	(33,868,000)	(145,326,000)
Unrealized loss related to available-for-sale securities																	(1,276,000)
Comprehensive income (loss)																	33,107,000	(33,868,000)	(145,326,000)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total revenue																	1,463,767,000	1,287,577,000	1,005,677,000
Home construction and land sales expenses																	1,153,125,000	1,030,304,000	828,368,000
Inventory impairments and option contract abandonments																	8,062,000	2,633,000	11,935,000
Gross profit																	302,580,000	254,640,000	165,374,000
Commissions																	58,028,000	52,922,000	43,585,000
General and administrative expenses																	136,349,000	121,035,000	109,937,000
Depreciation and amortization																	13,279,000	12,784,000	13,510,000
Operating income (loss)																	94,924,000	67,899,000	(1,658,000)
Equity in income (loss) of unconsolidated entities																	6,545,000	(113,000)	304,000
Loss on extinguishment of debt																	0	0	0
Other expense, net																	1,600,000	1,278,000	2,328,000
Loss from continuing operations before income taxes																	103,069,000	69,064,000	974,000
Benefit from income taxes																	(27,642,000)	7,058,000	27,380,000
Equity in income of subsidiaries																	0	0	0
Income (loss) from continuing operations																	130,711,000	62,006,000	(26,406,000)
Loss from discontinued operations, net of tax																	(532,000)	(1,736,000)	(9,695,000)
Equity in loss of subsidiaries																	0	0	0
Net income (loss)																	130,179,000	60,270,000	(36,101,000)
Unrealized loss related to available-for-sale securities																	0
Comprehensive income (loss)																	130,179,000	60,270,000	(36,101,000)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total revenue																	379,000	736,000	941,000
Home construction and land sales expenses																	0	0	0
Inventory impairments and option contract abandonments																	0	0	0
Gross profit																	379,000	736,000	941,000
Commissions																	0	0	0
General and administrative expenses																	114,000	128,000	114,000
Depreciation and amortization																	0	0	0
Operating income (loss)																	265,000	608,000	827,000
Equity in income (loss) of unconsolidated entities																	0	0	0
Loss on extinguishment of debt																	0	0	0
Other expense, net																	(5,000)	15,000	27,000
Loss from continuing operations before income taxes																	260,000	623,000	854,000
Benefit from income taxes																	92,000	218,000	299,000
Equity in income of subsidiaries																	0	0	0
Income (loss) from continuing operations																	168,000	405,000	555,000
Loss from discontinued operations, net of tax																	(8,000)	32,000	(8,000)
Equity in loss of subsidiaries																	0	0	0
Net income (loss)																	160,000	437,000	547,000
Unrealized loss related to available-for-sale securities																	0
Comprehensive income (loss)																	160,000	437,000	547,000
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Total revenue																	(379,000)	(736,000)	(941,000)
Home construction and land sales expenses																	(379,000)	(736,000)	(941,000)
Inventory impairments and option contract abandonments																	0	0	0
Gross profit																	0	0	0
Commissions																	0	0	0
General and administrative expenses																	0	0	0
Depreciation and amortization																	0	0	0
Operating income (loss)																	0	0	0
Equity in income (loss) of unconsolidated entities																	0	0	0
Loss on extinguishment of debt																	0	0	0
Other expense, net																	0	0	0
Loss from continuing operations before income taxes																	0	0	0
Benefit from income taxes																	0	0	0
Equity in income of subsidiaries																	(130,879,000)	(62,411,000)	25,851,000
Income (loss) from continuing operations																	(130,879,000)	(62,411,000)	25,851,000
Loss from discontinued operations, net of tax																	0	0	0
Equity in loss of subsidiaries																	540,000	1,704,000	9,703,000
Net income (loss)																	(130,339,000)	(60,707,000)	35,554,000
Unrealized loss related to available-for-sale securities																	0
Comprehensive income (loss)																	$ (130,339,000)	$ (60,707,000)	$ 35,554,000

[1] (a)Gross profit in fiscal 2014 and 2013 includes inventory impairment and option contract abandonments as follows:(In thousands) Fiscal 2014 Fiscal 20131st Quarter $31 $2042nd Quarter 880 2,0253rd Quarter 2,010 —4th Quarter 5,386 404 $8,307 $2,633

[2] Net (loss) income from continuing operations in fiscal 2014 and 2013 includes loss on extinguishment of debt (as follows). (In thousands) Fiscal 2014 Fiscal 20131st Quarter $— $—2nd Quarter (153) (3,638)3rd Quarter (19,764) —4th Quarter — (998) $(19,917) $(4,636)