San Juan Preservation TrustFounded in 1979, the San Juan Preservation Trust is a private, nonprofit and membership-based land trust dedicated to helping people and communities conserve land in the San Juan Islands of Washington State. Together with our landowner partners and member/supporters, the Preservation Trust permanently protects more than 300 properties, 50 miles of shoreline, 25 miles of trails, and more than 18,000 acres on 22 islands.