Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.7.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2017
Apr. 25, 2017
Document and Entity Information [Abstract]    
Entity Registrant Name SG BLOCKS, INC.  
Entity Central Index Key 0001023994  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Type 10-Q  
Document Period End Date Mar. 31, 2017  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2017  
Entity Filer Category Smaller Reporting Company  
Trading Symbol SGBXQ  
Entity Common Stock, Shares Outstanding   163,901