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| Led by John Spears, Sustainable Design Group is based in Maryland and comprised of LEED certified green architects and builders, specializing in sustainable, green, custom home design and construction including energy efficient passive solar homes, passive solar additions, green home renovation, and green home remodeling and construction. Sustainable Design Group | Main: (301) 428-1040 | Fax: (301) 916-8786 | 22923 Wildcat Road, Gaithersburg, Maryland 20882 © Copyright 2010 Sustainable Design Group. All Rights Reserved. |
