Upper Lucas Valley

Upper Lucas Valley may be the best-preserved Eichler neighborhood in California: all single-level homes from the mid-1960s — atriums, walls of glass, radiant heat, including the double-A-frame gable models — under a homeowners association whose architectural control has kept the streetscape essentially intact for sixty years.

Published counts run from just over 300 to 435 homes; call it roughly 400, tucked into a green valley behind Marinwood with hills on every horizon. For buyers who want the neighborhood to still look like the brochure, nothing else compares.