Commercial Surety Bond Agency (CSBA) has been providing bonds to contractors since 1984. We are one of the largest surety only agents in California with over 110 years combined experience both as surety underwriters & agents. We have worked with over 300 construction companies ranging in size from one-man startups to large national firms. Our singular focus on surety, unmatched depth of experience & unrelenting passion for helping guide our clients on their journey to success truly separates us.