The D.Z. Cook Company was founded in 1967 by David Cook based originally in San Francisco, CA. Today, our sales office and 25,000 square-foot warehouse are strategically located in Hayward, CA. We are a manufacturer’s representative firm representing the industry's best-in-class electrical and lighting manufacturers for the Northern CA and Western Nevada markets. D.Z. Cook Company is dedicated to connecting opportunities with contractors and end-users to our distributor partners.