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DISCONTINUED OPERATIONS - Summary of Operating Results of Discontinued Operations Reflected on Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenues
Total revenue		$ 14,919
Expenses
Sales and marketing		270
General and administrative		21
Loss from discontinued operations before income taxes		(273)
Income tax benefit		(15)
Net loss from discontinued operations		(258)
Net income attributable to non-controlling interests		313
Net loss attributable to Comstock Holding Companies, Inc.	$ 0	(571)
Homebuilding
Revenues
Total revenue		14,919
Expenses
Cost of sales—homebuilding		$ 14,901

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