18772 S Houghton Road Spectacular views, wide open desert, city, sunrise and sunset views from this home perched at the foot of the Santa Rita mountains. Custom built home with open floor plan, large rooms, custom millwork and built-ins (made with natural pecan, cherry, mahogany, alder, cholla and other woods) make this a truly unique home. A lot of thought went into its orientation and construction. Built for major energy efficiency, metal framed stucco, thick walls created using ''Mikey Block'' (Styrofoam reinforced w/concrete and rebar), solar hot water heater circulates under floors to create an energy efficient space that's easy to heat and cool. The main house is 3 bed/ 2 bath, featuring a large great room, formal dining room, large kitchen and a combined pantry/ laundry room. Covered back patio runs the length of the house, with sunset view. Electronic "fence" with two dog collars for safe roaming. Uses the Sun to heat the house with radiant heat and water from the sky to go to 4 cisterns for watering plants. Has post-tensioning, preventing cracks. Studio guest casita w/ full bath and efficiency kitchen. Lots of storage, including 2 accessible attic areas with pull-down ladders and a storage/ workshop off the guest casita. Three-car carport in front of casita, all on over 4 acres.