Cover
Jul. 05, 2022
Entity Addresses [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 05, 2022
Entity File Number 001-38037
Entity Registrant Name SG BLOCKS, INC.
Entity Central Index Key 0001023994
Entity Tax Identification Number 95-4463937
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 5011 Gate Parkway
Entity Address, Address Line Two Building 100
Entity Address, Address Line Three Suite 100
Entity Address, City or Town Jacksonville
Entity Address, State or Province FL
Entity Address, Postal Zip Code 32256
City Area Code 646
Local Phone Number 240-4235
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.01
Trading Symbol SGBX
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Former Address [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 5011 Gate Parkway
Entity Address, Address Line Two Building 100
Entity Address, Address Line Three Suite 100
Entity Address, City or Town Jacksonville
Entity Address, State or Province FL
Entity Address, Postal Zip Code 32256