Cornerstone Associates Insurance Services, Inc.




Originally founded in 1948 as Grey Brothers, a partnership between two brothers, Cornerstone is now owned by Primo Santini III, and David Bonillo, who, together, have over 50 years experience in the insurance industry.

Cornerstone Associates is a full service independent insurance agency. Affiliated with Granite Insurance Service, we can place policies with over 40 property/casualty companies and have access to over 50 different life companies and every health company serving the greater Sacramento area.



521 Lincoln Boulevard, Lincoln, CA 95648


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Downtown Lincoln Association Member