Welcome to AG 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

FEMA periodically reviews and updates the flood insurance rate maps. These maps and the corresponding zones determine the rates for flood insurance from the National Flood Insurance Program. The map changes will have an impact on flood...

We don't want you to find out the hard way that you forgot to renew your driver's license or forgot to have your car inspected or the license plates renewed. Not only can it be very expensive to forget to do so -in the way of fines or surcharge...

Albert G. Brock Insurance Company has a new look and new interactive technology to better service our clients. Our website allows our clients and visitors to research various insurance products, request quotes, and communicate with members of the...

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...
We don't want you to find out the hard way that you forgot to renew your driver's license or forgot to have your car inspected or the license plates renewed. Not only can it be very expensive to forget to do so -in the way of fines or surcharge...

1.877.242.7625

Albert G. Brock Insurance Company
53 Main Street
P.O. Box 1500
Nantucket, MA 02554




Local: 508.228.0104
Fax: 508.228.5166