Supplemental Guarantor Information - Consolidating Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Condensed Financial Statements, Captions [Line Items]
Beazer homes' ownership interest in guarantor subsidiaries	100.00%
ASSETS
Cash and cash equivalents	$ 324,154	$ 504,459	$ 487,795	$ 370,403
Restricted cash	62,941	48,978
Accounts receivable (net of allowance of $1,245 and $1,651, respectively)	34,429	22,342
Income tax receivable	46	2,813
Owned inventory	1,557,496	1,304,694
Land not owned under option agreements	3,857	9,124
Investments in marketable securities and unconsolidated entities	38,341	44,997
Deferred tax assets, net	2,823	5,253
Property, plant and equipment, net	18,673	17,000
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	23,460	27,129
Total assets	2,066,220	1,986,789
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	106,237	83,800
Other liabilities	142,516	145,623
Intercompany	0	0
Obligations related to land not owned under option agreements	2,916	4,633
Total debt (net of discounts of $4,399 and $5,160, respectively)	1,535,433	1,512,183
Total liabilities	1,787,102	1,746,239
Stockholders’ equity	279,118	240,550	262,247	198,380
Total liabilities and stockholders’ equity	2,066,220	1,986,789
Beazer Homes USA, Inc.
ASSETS
Cash and cash equivalents	301,980	499,341	481,394	360,723
Restricted cash	61,945	47,873
Accounts receivable (net of allowance of $1,245 and $1,651, respectively)	0	0
Income tax receivable	46	2,813
Owned inventory	0	0
Land not owned under option agreements	0	0
Investments in marketable securities and unconsolidated entities	773	773
Deferred tax assets, net	2,823	5,253
Property, plant and equipment, net	0	0
Investments in subsidiaries	253,540	123,600
Intercompany	1,195,349	1,088,949
Other assets	17,226	19,602
Total assets	1,833,682	1,788,204
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	38,871	52,009
Intercompany	2,405	2,747
Obligations related to land not owned under option agreements	0	0
Total debt (net of discounts of $4,399 and $5,160, respectively)	1,513,288	1,492,898
Total liabilities	1,554,564	1,547,654
Stockholders’ equity	279,118	240,550
Total liabilities and stockholders’ equity	1,833,682	1,788,204
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	22,034	6,324	8,215	10,488
Restricted cash	996	1,105
Accounts receivable (net of allowance of $1,245 and $1,651, respectively)	34,428	22,339
Income tax receivable	0	0
Owned inventory	1,557,496	1,304,694
Land not owned under option agreements	3,857	9,124
Investments in marketable securities and unconsolidated entities	37,568	44,224
Deferred tax assets, net	0	0
Property, plant and equipment, net	18,673	17,000
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	6,144	7,147
Total assets	1,681,196	1,411,957
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	106,237	83,800
Other liabilities	102,833	92,384
Intercompany	1,196,823	1,091,792
Obligations related to land not owned under option agreements	2,916	4,633
Total debt (net of discounts of $4,399 and $5,160, respectively)	22,145	19,285
Total liabilities	1,430,954	1,291,894
Stockholders’ equity	250,242	120,063
Total liabilities and stockholders’ equity	1,681,196	1,411,957
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	1,614	1,637	646	418
Restricted cash	0	0
Accounts receivable (net of allowance of $1,245 and $1,651, respectively)	1	3
Income tax receivable	0	0
Owned inventory	0	0
Land not owned under option agreements	0	0
Investments in marketable securities and unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property, plant and equipment, net	0	0
Investments in subsidiaries	0	0
Intercompany	2,405	2,747
Other assets	90	380
Total assets	4,110	4,767
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	812	1,230
Intercompany	0	0
Obligations related to land not owned under option agreements	0	0
Total debt (net of discounts of $4,399 and $5,160, respectively)	0	0
Total liabilities	812	1,230
Stockholders’ equity	3,298	3,537
Total liabilities and stockholders’ equity	4,110	4,767
Consolidating Adjustments
ASSETS
Cash and cash equivalents	(1,474)	(2,843)	(2,460)	(1,226)
Restricted cash	0	0
Accounts receivable (net of allowance of $1,245 and $1,651, respectively)	0	0
Income tax receivable	0	0
Owned inventory	0	0
Land not owned under option agreements	0	0
Investments in marketable securities and unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property, plant and equipment, net	0	0
Investments in subsidiaries	(253,540)	(123,600)
Intercompany	(1,197,754)	(1,091,696)
Other assets	0	0
Total assets	(1,452,768)	(1,218,139)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(1,199,228)	(1,094,539)
Obligations related to land not owned under option agreements	0	0
Total debt (net of discounts of $4,399 and $5,160, respectively)	0	0
Total liabilities	(1,199,228)	(1,094,539)
Stockholders’ equity	(253,540)	(123,600)
Total liabilities and stockholders’ equity	$ (1,452,768)	$ (1,218,139)