Exceptionally rare, original Los Altos residence offering an expansive 2,943 sqft of living space on an impressive 11,000 sqft lot. 1st time on market, this home has been lovingly cherished by 1 family. Home features 5 bedrms & 4 full baths in a sought-after location. Step inside to a bright foyer leading to formal living and dining room combo with soaring vaulted ceilings. The spacious kitchen with a walk-in pantry flows effortlessly into the main living areas. Separate family room w/fireplace and wet bar. Multiple sets of French doors lead to balconies showcasing stunning mountain views. Main floor features 3 large bdrms, full hall bath, and huge primary suite with walk-in closet, ensuite bath, and balcony. The homes lower level includes full bath, access to 3-car garage, and large guest quarters/ADU with a bedrm, full bath, kitchenette, & access to yard. Relax in the backyard with built-in pool and spa. Fresh updates include 40-year roof, all-new interior & exterior paint, carpet, lighting & front landscaping. 3-car garage & large laundry room add modern convenience. Located in a prime neighborhood just moments from top-rated Montclaire Elementary & private entrance to Rancho San Antonio. Rare opportunity to own a fantastic property in one of Los Altos most desirable areas.