Making an Antique Sustainable

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Jonathan Feldman, an architect, and his wife, Lisa Lougee, an interior designer, gut-renovated a 1905 house in San Francisco to create the bright, airy home that they share with their daughters, Summer, far left, and Sasha.

Matthew Millman for The New York Times

Making an Antique Sustainable

Can an old house ever be as green as new construction? One architect was determined to prove it was possible, using his own San Francisco home.