Supplemental Guarantor Information - Unaudited Condensed Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Total debt (net of premium of $1,535 and $1,482, respectively, and debt issuance costs of $14,509 and $15,514, respectively)	$ 1,336,483	$ 1,331,878
ASSETS
Cash and cash equivalents	158,623	228,871	$ 144,881	$ 251,583
Restricted cash	15,963	14,405
Accounts receivable (net of allowance of $350 and $354, respectively)	51,797	53,226
Income tax receivable	288	292
Owned inventory	1,618,544	1,569,279
Investments in unconsolidated entities	5,065	10,470
Deferred tax assets, net	312,666	309,955
Property and equipment, net	19,335	19,138
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	5,862	7,522
Total assets	2,188,143	2,213,158
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	86,730	104,174
Other liabilities	121,711	134,253
Intercompany	0	0
Total liabilities	1,544,924	1,570,305
Stockholders’ equity	643,219	642,853
Total liabilities and stockholders’ equity	2,188,143	2,213,158
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Total debt (net of premium of $1,535 and $1,482, respectively, and debt issuance costs of $14,509 and $15,514, respectively)	0	0
ASSETS
Cash and cash equivalents	(6,408)	(4,500)	(8,384)	(3,192)
Restricted cash	0	0
Accounts receivable (net of allowance of $350 and $354, respectively)	0	0
Income tax receivable	0	0
Owned inventory	0	0
Investments in unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	(713,629)	(701,931)
Intercompany	(791,878)	(737,340)
Other assets	0	0
Total assets	(1,511,915)	(1,443,771)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	0	0
Intercompany	(798,286)	(741,840)
Total liabilities	(798,286)	(741,840)
Stockholders’ equity	(713,629)	(701,931)
Total liabilities and stockholders’ equity	(1,511,915)	(1,443,771)
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Total debt (net of premium of $1,535 and $1,482, respectively, and debt issuance costs of $14,509 and $15,514, respectively)	1,321,640	1,320,065
ASSETS
Cash and cash equivalents	159,886	215,646	152,824	232,226
Restricted cash	14,683	12,867
Accounts receivable (net of allowance of $350 and $354, respectively)	0	0
Income tax receivable	288	292
Owned inventory	0	0
Investments in unconsolidated entities	773	773
Deferred tax assets, net	312,666	309,955
Property and equipment, net	0	0
Investments in subsidiaries	713,629	701,931
Intercompany	789,502	734,766
Other assets	822	577
Total assets	1,992,249	1,976,807
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	25,014	11,315
Intercompany	2,376	2,574
Total liabilities	1,349,030	1,333,954
Stockholders’ equity	643,219	642,853
Total liabilities and stockholders’ equity	1,992,249	1,976,807
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total debt (net of premium of $1,535 and $1,482, respectively, and debt issuance costs of $14,509 and $15,514, respectively)	14,843	11,813
ASSETS
Cash and cash equivalents	4,292	16,866	(547)	21,543
Restricted cash	1,280	1,538
Accounts receivable (net of allowance of $350 and $354, respectively)	51,797	53,225
Income tax receivable	0	0
Owned inventory	1,618,544	1,569,279
Investments in unconsolidated entities	4,292	9,697
Deferred tax assets, net	0	0
Property and equipment, net	19,335	19,138
Investments in subsidiaries	0	0
Intercompany	0	0
Other assets	5,040	6,930
Total assets	1,704,580	1,676,673
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	86,730	104,174
Other liabilities	96,345	122,561
Intercompany	795,910	739,266
Total liabilities	993,828	977,814
Stockholders’ equity	710,752	698,859
Total liabilities and stockholders’ equity	1,704,580	1,676,673
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total debt (net of premium of $1,535 and $1,482, respectively, and debt issuance costs of $14,509 and $15,514, respectively)	0	0
ASSETS
Cash and cash equivalents	853	859	$ 988	$ 1,006
Restricted cash	0	0
Accounts receivable (net of allowance of $350 and $354, respectively)	0	1
Income tax receivable	0	0
Owned inventory	0	0
Investments in unconsolidated entities	0	0
Deferred tax assets, net	0	0
Property and equipment, net	0	0
Investments in subsidiaries	0	0
Intercompany	2,376	2,574
Other assets	0	15
Total assets	3,229	3,449
LIABILITIES AND STOCKHOLDERS’ EQUITY
Trade accounts payable	0	0
Other liabilities	352	377
Intercompany	0	0
Total liabilities	352	377
Stockholders’ equity	2,877	3,072
Total liabilities and stockholders’ equity	$ 3,229	$ 3,449