Spanning 208,000 sq ft, the $195-million County Office Building 3 (COB3) is the first net-zero energy, LEED Platinum, mass timber civic building in the U.S.

Scope of work on this $350-million project included construction of 16 miles of express lanes in each direction between Redwood City and South San Francisco.

At 108,900 sq ft, this state-of-the-art facility is a key component of San Mateo County’s plan to offer every unsheltered person a safe and dignified atmosphere to serve their needs as they transition to permanent housing.

The nation’s first mass-timber, net-zero energy, low-carbon public building also provides the San Mateo County civic structure with gravitas.

The construction of the $96-million, 115,000-sq-ft, LEED Gold-certified athletics and educational community college facility in Redwood, Calif., would test Blach Construction’s safety program in unique ways.