Ganneston Construction is a Maine based company offering general contracting, construction management and design-build services to its clients since 1963. It is the only general contractor certified as a Woman-Owned Business by the State of Maine. Ganneston Constructions primary focus is on the renovation and new construction of commercial, historical, industrial, institutional, multi-family, government and pre-engineered metal building projects to private and public clients in Maine and New Hampshire.
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