Supplemental Guarantor Information - Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Beazer homes' ownership interest in guarantor subsidiaries	100.00%
ASSETS
Cash and cash equivalents	$ 251,583	$ 324,154	$ 504,459	$ 487,795
Restricted cash	38,901	62,941
Accounts receivable (net of allowance of $1,052 and $1,245, respectively)	52,379	34,429
Income tax receivable	419	46
Owned inventory	1,697,590	1,557,496
Land not owned under option agreements	0	3,857
Investments in unconsolidated entities and marketable securities	13,734	38,341
Deferred tax assets, net	325,373	2,823
Property and equipment, net	22,230	18,673
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	18,994	23,460
Total assets	2,421,203	2,066,220	1,986,789
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	113,539	106,237
Other liabilities	148,966	142,516
Intercompany	0	0
Obligations related to land not owned under option agreements	0	2,916
Total debt (net of discounts of $3,639 and $4,399, respectively)	1,528,275	1,535,433
Total liabilities	1,790,780	1,787,102
Stockholders’ equity	630,423	279,118	240,550	262,247
Total liabilities and stockholders’ equity	2,421,203	2,066,220
Beazer Homes USA, Inc.
ASSETS
Cash and cash equivalents	232,226	301,980	499,341	481,394
Restricted cash	37,177	61,945
Accounts receivable (net of allowance of $1,052 and $1,245, respectively)	0	0
Income tax receivable	419	46
Owned inventory	0	0
Land not owned under option agreements		0
Investments in unconsolidated entities and marketable securities	773	773
Deferred tax assets, net	325,373	2,823
Property and equipment, net	0	0
Investments in subsidiaries	649,701	253,540
Intercompany	913,733	1,195,349
Other assets	12,519	17,226
Total assets	2,171,921	1,833,682
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	31,703	38,871
Intercompany	2,384	2,405
Obligations related to land not owned under option agreements		0
Total debt (net of discounts of $3,639 and $4,399, respectively)	1,507,411	1,513,288
Total liabilities	1,541,498	1,554,564
Stockholders’ equity	630,423	279,118
Total liabilities and stockholders’ equity	2,171,921	1,833,682
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	21,543	22,034	6,324	8,215
Restricted cash	1,724	996
Accounts receivable (net of allowance of $1,052 and $1,245, respectively)	52,378	34,428
Income tax receivable	0	0
Owned inventory	1,697,590	1,557,496
Land not owned under option agreements		3,857
Investments in unconsolidated entities and marketable securities	12,961	37,568
Deferred tax assets, net	0	0
Property and equipment, net	22,230	18,673
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	6,471	6,144
Total assets	1,814,897	1,681,196
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	113,539	106,237
Other liabilities	116,718	102,833
Intercompany	916,925	1,196,823
Obligations related to land not owned under option agreements		2,916
Total debt (net of discounts of $3,639 and $4,399, respectively)	20,864	22,145
Total liabilities	1,168,046	1,430,954
Stockholders’ equity	646,851	250,242
Total liabilities and stockholders’ equity	1,814,897	1,681,196
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	1,006	1,614	1,637	646
Restricted cash	0	0
Accounts receivable (net of allowance of $1,052 and $1,245, respectively)	1	1
Income tax receivable	0	0
Owned inventory	0	0
Land not owned under option agreements		0
Investments in unconsolidated entities and marketable securities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	0	0
Intercompany	2,384	2,405
Other assets	4	90
Total assets	3,395	4,110
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	545	812
Intercompany	0	0
Obligations related to land not owned under option agreements		0
Total debt (net of discounts of $3,639 and $4,399, respectively)	0	0
Total liabilities	545	812
Stockholders’ equity	2,850	3,298
Total liabilities and stockholders’ equity	3,395	4,110
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(3,192)	(1,474)	$ (2,843)	$ (2,460)
Restricted cash	0	0
Accounts receivable (net of allowance of $1,052 and $1,245, respectively)	0	0
Income tax receivable	0	0
Owned inventory	0	0
Land not owned under option agreements		0
Investments in unconsolidated entities and marketable securities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	(649,701)	(253,540)
Intercompany	(916,117)	(1,197,754)
Other assets	0	0
Total assets	(1,569,010)	(1,452,768)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(919,309)	(1,199,228)
Obligations related to land not owned under option agreements		0
Total debt (net of discounts of $3,639 and $4,399, respectively)	0	0
Total liabilities	(919,309)	(1,199,228)
Stockholders’ equity	(649,701)	(253,540)
Total liabilities and stockholders’ equity	$ (1,569,010)	$ (1,452,768)