History
Guaranteed Builders and Developers, Inc. merged with Wallis Lumber in 1979 and was launched as a company with a future. Our philosophy was to keep the American dream alive of owning a home of your own, well within your financial ability. GBI is continuing even further today, building quality constructed modular homes in our own facility located at 14 West Street in Douglas, MA.
Specialties
Builder of Custom Modular Homes, Panelized Garages, Additions, and Septic Systems. We offer complete site work packages. Fully licensed and insured. We are a true full service modular builder and can handle all aspects of the construction process for you. From pulling the permits and site work to finish carpentry, GBI-Avis will manage your project every step of the way. It is the GBI-Avis difference. From construction in our manufacturing facility to utilizing our own heavy equipment and our staff of skilled trades people GBI-Avis handles every step of your project insuring a high quality product that we are proud to stand behind.