CalPortland
Wholesale Building MaterialsCalifornia, United States1001-5000 Employees
CalPortland is a regional wholesale building materials company serving the Western United States and Canada. It supplies cement production and distribution, ready-mixed concrete, aggregates, asphalt, and other building materials, along with construction services to support projects. Founded in 1891 and based in Glendora, California, the company pursues sustainable materials and renewable technologies and has earned ENERGY STAR recognition for twenty consecutive years. Its customers are construction professionals and projects in the Western U.S. and Canada that require reliable material supply and technical expertise to meet building challenges. A recent development includes Wildlife Habitat Council Conservation Certification for conservation programs at the El Segundo Ready Mix Plant and Crestmore Center for Technical Excellence, announced in January 2026.