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Welcome to the home of Costello & Sons – your trusted choice for California insurance and insurance across the U.S.!

The premier leader in technology insurance, venture capital/private equity, and more.

Costello & Sons is a third generation California insurance brokerage with roots originally established in downtown San Francisco. With unwavering determination and commitment to the local community, Costello & Sons has evolved over the years and now proudly boasts 5 locations including San Rafael, Sacramento, Irvine, Santa Barbara and Silicon Valley, CA.

Since our founding, Costello & Sons has continuously been dedicated to serving the Southern and Northern California insurance needs of area individuals, families and businesses. As a well established, local brokerage, Costello & Sons has grown to over 2,000 clients and over $45,000,000 in insurance premium—which puts us in the top 15% of insurance brokers across the nation.

Our broad network of providers ensures that we can secure superior California insurance for all of your coverage needs, no matter where you are located! Whether you are in need of comprehensive Irvine insurance, Menlo Park insurance, Sacramento, LA—or coverage anywhere across this great state for that matter—our years of extensive experience and industry relationships allow us to provide you with a custom, tailored policy that you can truly rely on.

While most brokers are "generalists" who attempt to be all things to all people, Costello & Sons specializes in placing insurance in 4 distinct areas: Technology Companies, Venture Capital / Private Equity Firms, and Individuals.

Costello & Sons is a full service insurance agency and brokerage firm, offering a wide range of products and services to meet the needs of our clients including property and casualty insurance, group health, life, disability and long-term care.

However, here at Costello & Sons our coverage strategies certainly don't stop there! Costello & Sons has also developed an extensive risk management program that provides education and resources for agents and brokers. Costello & Sons is also one of 18 members of TechAssure, a global group of elite brokers endorsed by the National Venture Capital Association (NVCA) to deliver "best of breed" solutions and products for their members and portfolio companies.

We are also proud to announce that Costello & Sons was recently named one of the "25 Most Innovative Insurance Agents" in the U.S. out of 26,000 existing agencies.

With both Southern and Northern California insurance offices, years of dedication and the highest-quality service, what more could you possibly as for in an insurance agency? Here at Costello & Sons we value that simple fact that we're small enough to know our clients by name yet large enough to insure you with worldwide operations. No matter where you are located, across the State of California, Costello & Sons is standing by to help you access the best coverage at the right price.


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