Sustainable Spaces | 504 followers on LinkedIn. Sustainable Spaces is the Bay Area’s leading provider of home performance services, helping homeowners create homes that are comfortable, healthy, and energy efficient. Founded in 2004 with the mission of providing homeowners with a resource for finding and fixing the root causes of wasted energy in their homes, Sustainable Spaces is dedicated to offering whole-system solutions. A licensed general, solar, HVAC and insulation contractor, the company’s integrated team of HERS-certified Home Performance Specialists, environmental engineers, and specially trained Home Performance Retrofitters combine customer service with building science innovations and engineering solutions to transform homes into the most efficient, healthy versions of themselves.