Welcome to Commercial One

We provides life, home, automobile, and business insurance and we work with various carriers to help our clients to find the best coverage at the right price that suits their needs and expectations. We are committed to keep expanding our carrier base, to work with more well-known nationwide insurance carriers to offer our clients more choice.

Our Services

Business Insurance

With many coverage options we can protect your business from accident to natural disasters. Our experienced agents will help you to find the best coverage at an affordable price for your business policy.

Homeowners Insurance

We find the suited home insurance to help protect your home, your rental property against damage, theft, the elements and other covered events.

Automobile Insurance

Enjoy many services and benefits from our automobile insurance. We serve you quality at a nice price from our knowledgeable and friendly agent.

Life Insurance

You want to protect you and your loved ones? we can help you to find right coverage for you and your family.


Customer’s Testimonials

Featured Articles

Before I just got call from previous insurance company when they need me to renew my insurance. Since I switched to COIS I’ll get call from COIS’ office not only at the renew date. The owner even invited me to join their trucking drivers BBQ party on weekend. You asked me how about their work performance? PERFECT! The staffs keep update on my policy term to ensure non cancellation, and they are efficient and expedite on processing insurance need, policy change request.’

Huai Gang Shan

‘Best Agency Service in the Bay Area, they have so many choices to choose a proper insurance!’

Luan Nguyen

‘I heard about COIS from my co-workers and they said this insurance company provides reasonable premium for insurance coverage, also staff are professional and nice. You know for us, a reasonable insurance and thoughtful after-sale service are most important factors to select an insurance company. I switched my previous insurance to COIS and so far I’m happy with my decision. BTW, the owner of CEO is agreeable, warm-hearted guy. I like this guy.’

Hiep Tran

‘I’m so happy with COIS’ after-sale service. No other insurance agent will provide cell phone number for urgent contact. But, the owner of COIS gave me his cell phone number and told me just gave him call anytime when I need help. On call 24/7 if anything were to happen.

Brian He

This is my second year by COIS. No need to say too much, excellent claim service, very friendly staff, I feel well treated in COIS.

Juan Deleon

I really appreciated the owner and his staff’s helping and advice. I remembered two years ago when I just got trucking license and became a truck driver. I was referred by one of my co-workers to come to COIS. I have a bunch of questions in my head. I called owner almost every day to find answers at that time, even the late evening. Now I felt sorry for my behavior at that time, because I bothered him a lot. Honestly some questions are already exceed his working range like how to get best trucking dealers around me, how to finance my trucking etc. The owner of COIS never showed any impatience, even the highest record I called him 6 times in a day. I speak very little English and I always asked him as my interpreter while I meet him. I trust him and treat him as a good friend.

Fu Sheng Lei