Good Start Genetics has expanded its Cambridge headquarters by adding 15,479 square feet of office space in Blackstone Square.

The molecular diagnostics company now occupies a total of 32,079 square feet in the building,

Jones Lang LaSalle Executive Vice President Peter Bekarian and Vice President Daniel Kollar negotiated the transaction on behalf of owner Centremark Properties Inc.

“The Centremark team’s ability to deliver high quality lab and office fit up in a cost effective manner has enabled Good Start Genetics to meet our business targets,” Good Start Genetics Chief Executive Officer Don Hardison said in a statement.

Acquired in 2007 by Centremark Properties, Blackstone Square is a brick and beam landmark building that has been upgraded to first class standards. Centremark Properties improved the vacant building to feature new lobbies, elevators, common area finishes, shared amenities and state of the art mechanical systems and infrastructure.

The building is located one block from Memorial Drive with views of the Charles River.