Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.5.0.2
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2016
Aug. 03, 2016
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, 2016  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2016  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   491,365