Trinity E & S Insurance Services, was established in California in 1985, and is a full service multi-line MGA/Excess & Surplus Lines brokerage, serving an ever expanding network of agents and brokers with two offices in California: Bermuda Dunes and Petaluma. Our states of authority include: California, Nevada & Arizona. Trinity has enjoyed many years of continual growth and expansion and has maintained an excellent relationship with major admitted and non-admitted carriers. While our specialty during Trinitys twenty years of existence has been mainly insuring the construction contractor classes of business, we also have in-house markets for most of your other commercial insurance needs. Among the client insurance companies for which we currently underwrite are: Arch Specialty Insurance Company, First Financial Insurance Company, Burlington Insurance Company, Century Insurance Group, Guilford Specialty Group, Tower Group, Topa Insurance Company and Lloyds of London. In addition, Trinity has brokerage relationships with numerous insurance companies. I just want to thank all of the agents and insurance companies that have partnered with us and contributed to the success of Trinity E&S Insurance Services for the last twenty years. Without you, we would not have succeeded. Trinity E&S Insurance Services is dedicated to providing the highest standards of professionalism and integrity. We are committed to offering superior service to our clients so that their success will also become our success. Message from President Contractors Program ( CA, NV & AZ )Request InformationHome.