Basalite began as a part of Basalt Rock Company, Napa, CA in the mid 1930's and was acquired by Pacific Coast Building Products in 1979 becoming one of the largest suppliers of concrete masonry products in Western North America. Product lines include structural block, interlocking paving stones, wall systems, retaining walls, ornamental and garden products, and a full range of packaged concrete/mortar products.

The use of Basalite Concrete Masonry Units, or CMU, has grown rapidly in demand over the past couple of decades. This has been due to not only the building boom in Northern California, but also as result of advances in building design and changes in architectural preference.