Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Net Income (Loss) Per Share [Abstract]

Schedule of shares outstanding to calculate both the basic and diluted loss per share

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2018			2017			2018			2017
	(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)
Net loss attributable to common stockholders of SG Blocks, Inc.	$	(1,026,037	)	$	(1,043,301	)	$	(3,013,042	)	$	(3,439,303	)
Net loss per share - basic and diluted:
Basic and diluted	$	(0.24	)	$	(0.25	)	$	(0.71	)	$	(2.09	)
Weighted average shares outstanding:
Basic and diluted		4,260,041			4,177,890			4,260,041			1,647,916