Welcome to Brock Insurance

Welcome to our website. Since 1886, our focus has been clear -- to be the best in the business at providing personal and commercial insurance services to our clients.  As the oldest family owned business on Nantucket we have a proven record of meeting business, personal and family insurance needs.  Our team of insurance professionals works in partnership with you to custom design coverage for you, your family and your business; from a simple automobile policy to high value homes and complex business insurance. 

As an independent insurance agency, we represent many different insurance companies  - and match your needs with the best company providing the right combination of coverage and price.

Working as your agent, we develop a comprehensive coverage plan and serve as your advocate during the claims process. We believe in old fashioned service and values and being actively involved in the community of Nantucket.

Recent News & Events

Each year, over 150 workers are killed and more than 100,000 are injured as a result of falls at construction sites. Employers need to know how to:

  • Select fall protection systems appropriate for given situations
  • Install...

Valentine’s Day is a special day – a day when flowers, candy, and jewelry are freely given to celebrate love.  If you are either giving or receiving jewelry, we want you to protect this keepsake with proper coverage either by adding it to...

With our first Winter storm on the way this weekend, we wanted to alert you that just a small amount of snow can cause more accidents than a full-blown out snowstorm.

Take a look at this video from...

Recent Blog Articles

The National Insurance Crime Bureau (NCIB) has recently released the attached video discussing the increasing concern about the ability of car thieves to obtain specific codes for the remote control device you use to unlock your car.  Fortrunately...
Many people on Nantucket think that floods don't happen on the island. Ocassionally they read in the newspaper that another house was lost to the ocean by coastal errosion and leave it at that.  In fact though, flood damage has occurred in many...
Effective January 5th, a new law in Massachusetts has gone into effect that bans the use of hand-held cellphones while driving a commercial vehicle.  This law will be enforced by the MA State Police Truck Team.  It does not affect...