Tower Cos. to launch major redevelopment of The Blairs in Silver Spring

The Tower Cos. is planning to launch a major redevelopment of The Blairs in Silver Spring, a roughly $625 million remake of the half-century-old suburban development that was built before the Metro extended into Maryland at a time when shopping centers were dominated by sprawling seas of asphalt parking.

The Rockville-based firm has developed a master plan that would double the number of residential units and triple the amount of commercial space at the site, bounded by Eastern Avenue, East-West…