renovation and additions

Barrett L. Williamson Architects is an architecture firm formed by Barrett in 1998. The firm values design innovation and quality, uses standard components creatively for cost-effective solutions, and approaches design in ecologically responsible ways. It has extensive experience in high performance energy efficient buildings and systems, and much of its work involves renovation and additions to existing buildings, including rehabilitations and additions to historic buildings.

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architectural designenergy efficient building designhistoric building rehabilitationnew construction