This Happy Valley masterpiece, on a traffic-free cul-de-sac, was built as the personal residence of its noted designer. Outdoor dining areas survey the magnificent terraced garden and adjoin a waterfall feature and firepit. A path from the garden leads to the incomparable hiking and views in Briones Regional Park. Inside, the home features a chef’s kitchen with custom cabinetry, marble and granite counters, top appliances, a breakfast bar, and garden views; two fireplaces with stone mantles generating warmth throughout; custom window treatments and light fixtures; SONOS sound system inside and out; smart televisions; hand-scraped oak flooring; elevated wood-beam ceilings; thick walls and double-paned windows; two offices with built-in features; top bathroom fixtures and tiles; a great room adjoining a granite and tile wet bar; distinctive custom railings; two tankless water heaters; garages for four cars; ample cabinet and storage spaces; hot tub; and en-suite bathrooms for most bedrooms.