Casa Aguila is pursuing several certifications for its energy efficient design. Builders say that with a few more changes the house could eventually disconnect from the grid. Photo courtesy of Alliance Green Builders

Casa Aguila is pursuing several certifications for its energy efficient design. Builders say that with a few more changes the house could eventually disconnect from the grid. Photo courtesy of Alliance Green Builders

— Builders of a new house in Ramona are trying to change the future of the residential housing market by building green, ultra-low energy homes at a lower cost...

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