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History of GBI-AvisHistory of Modular Homes of GBI-Avis

Going Strong for 178 Years!


Centrally Located - Just 30 Minutes from Boston, Worcester, or Providence



History of GBI-Avis


Guaranteed Builders Inc. merged with Wallis Lumber in 1979 and was launched as a company with a future. Our company's 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.


From beginning to end, our packages can include:
land, surveying and engineering, building permits, site work - excavation, well, septic design and installation, town water or sewer, footings, foundation, choice of cabinets, flooring, countertops and appliances, just to name a few.







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