Supplemental Guarantor Information - Unaudited Consolidating Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 265,764	$ 293,170
Home construction and land sales expenses	230,546	238,469
Inventory impairments and option contract abandonments	0	31
Gross profit	35,218	54,670
Commissions	10,926	11,821
General and administrative expenses	31,441	28,410
Depreciation and amortization	2,341	2,907
Operating (loss) income	(9,490)	11,532
Equity in income of unconsolidated entities	142	319
Other (expense) income, net	(9,434)	(15,757)
(Loss) income before income taxes	(18,782)	(3,906)
(Benefit from) provision for income taxes	(696)	42
Equity in loss of subsidiaries	0	0
Loss from continuing operations	(18,086)	(3,948)
Loss from discontinued operations, net of tax	(4,254)	(1,190)
Equity in loss of subsidiaries	0	0
Net loss	(22,340)	(5,138)
Unrealized gain related to available-for-sale securities	206	0
Comprehensive loss	(22,134)	(5,138)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Total revenue	0	0
Home construction and land sales expenses	8,194	7,135
Inventory impairments and option contract abandonments	0	0
Gross profit	(8,194)	(7,135)
Commissions	0	0
General and administrative expenses	0	0
Depreciation and amortization	0	0
Operating (loss) income	(8,194)	(7,135)
Equity in income of unconsolidated entities	0	0
Other (expense) income, net	(9,747)	(16,032)
(Loss) income before income taxes	(17,941)	(23,167)
(Benefit from) provision for income taxes	(6,627)	141
Equity in loss of subsidiaries	(6,772)	19,360
Loss from continuing operations	(18,086)	(3,948)
Loss from discontinued operations, net of tax	0	0
Equity in loss of subsidiaries	(4,254)	(1,190)
Net loss	(22,340)	(5,138)
Unrealized gain related to available-for-sale securities	206
Comprehensive loss	(22,134)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total revenue	265,764	293,170
Home construction and land sales expenses	222,450	231,414
Inventory impairments and option contract abandonments	0	31
Gross profit	43,314	61,725
Commissions	10,926	11,821
General and administrative expenses	31,414	28,383
Depreciation and amortization	2,341	2,907
Operating (loss) income	(1,367)	18,614
Equity in income of unconsolidated entities	142	319
Other (expense) income, net	314	278
(Loss) income before income taxes	(911)	19,211
(Benefit from) provision for income taxes	5,906	(117)
Equity in loss of subsidiaries	0	0
Loss from continuing operations	(6,817)	19,328
Loss from discontinued operations, net of tax	(4,251)	(1,187)
Equity in loss of subsidiaries	0	0
Net loss	(11,068)	18,141
Unrealized gain related to available-for-sale securities	0
Comprehensive loss	(11,068)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total revenue	98	80
Home construction and land sales expenses	0	0
Inventory impairments and option contract abandonments	0	0
Gross profit	98	80
Commissions	0	0
General and administrative expenses	27	27
Depreciation and amortization	0	0
Operating (loss) income	71	53
Equity in income of unconsolidated entities	0	0
Other (expense) income, net	(1)	(3)
(Loss) income before income taxes	70	50
(Benefit from) provision for income taxes	25	18
Equity in loss of subsidiaries	0	0
Loss from continuing operations	45	32
Loss from discontinued operations, net of tax	(3)	(3)
Equity in loss of subsidiaries	0	0
Net loss	42	29
Unrealized gain related to available-for-sale securities	0
Comprehensive loss	42
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Total revenue	(98)	(80)
Home construction and land sales expenses	(98)	(80)
Inventory impairments and option contract abandonments	0	0
Gross profit	0	0
Commissions	0	0
General and administrative expenses	0	0
Depreciation and amortization	0	0
Operating (loss) income	0	0
Equity in income of unconsolidated entities	0	0
Other (expense) income, net	0	0
(Loss) income before income taxes	0	0
(Benefit from) provision for income taxes	0	0
Equity in loss of subsidiaries	6,772	(19,360)
Loss from continuing operations	6,772	(19,360)
Loss from discontinued operations, net of tax	0	0
Equity in loss of subsidiaries	4,254	1,190
Net loss	11,026	(18,170)
Unrealized gain related to available-for-sale securities	0
Comprehensive loss	$ 11,026