570 Seventh Ave. in contract for double last year’s price

The brightly lit building at 570 Seventh Ave. in the tech-magnet area just south of Times Square is in contract for $163 million — nearly twice as much as the sellers paid for it a year ago.

Carlyle Investment Management and Daniel Ghadamian and Josh Zamir’s Capstone Equities bought the 167,000 square-foot office building on the southwest corner of W. 41st Street for $83 million, or $500 a foot, in July 2013.

Thanks to huge new LED signs and 20,922 square feet of retail space on a high visibility corner, the owners are selling the 21-story building for $163 million, or $976 per foot, to American Realty Capital.

Douglas Harmon and Adam Spies of Eastdil Secured marketed the transaction.

Earlier this year, the duo sold the two Class A buildings owned by Boston Properties across 41st Street at sky-high pricing. Five Times Square sold for $1.55 billion, while a 45 percent stake in Times Square Tower was sold to Norges Bank, valuing it at $1.51 billion.

The parties did not return requests for comment.