Stunning East-facing executive home with Casita in the highly sought-after Altamont Village of Mountain House. This exceptional property offers 4,021 total sq ft, including a 3,547 sq ft main residence and a 474 sq ft private casita with its own entrance and addressideal for multi-generational living, in-laws, guests, or rental income (approx. $1,500+/mo, buyer to verify). The main home features 4 bedrooms, 3.5 bathrooms, and a 3-car garage, formal living and dining rooms, a spacious family room with fireplace, and a dedicated office/den. The gourmet kitchen showcases granite slab countertops, stainless steel appliances, a casual dining area, and a butler's pantry. Upstairs, the expansive primary suite includes a private retreat, dual walk-in closets, and a luxurious bath, along with a loft-style family room and built-in tech area. The Casita has been refreshed with NEW paint, NEW flooring, and NEW appliances, offering a turnkey living space with granite counters & balcony. Enjoy a private backyard with covered patio, ceiling fans, gazebo, and large side yard with shedperfect for entertaining. Plantation shutters, surround sound, security system, NO HOA, and proximity to top-rated schools, parks, trails, shopping, and commuter routes complete this exceptional opportunity.