v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Nov. 08, 2018
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Trading Symbol CHCI  
Entity Registrant Name Comstock Holding Companies, Inc.  
Entity Central Index Key 0001299969  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Class A [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   3,683,199
Class B [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   220,250