Welcome to 15 Dias Court, an exceptional custom-built estate gracefully positioned on a quiet cul-de-sac in the rolling hills of El Sobrante. Set on a generous 10,000 sq ft lot, this exceptional residence offers 2,709 sq ft of thoughtfully designed living space, blending privacy, comfort, and sweeping panoramic hill and valley views. Designed for both elegant entertaining and everyday comfort, the home features 4 bedrooms plus a versatile den and 3 full bathrooms. Formal living and dining rooms exude sophistication, while the spacious family room with caf area creates a warm, inviting atmosphere. The designer kitchen is beautifully appointed with quartz countertops, semi-custom cabinetry, stainless KitchenAid appliances, and a built-in beverage center. The luxurious primary suite offers a serene retreat complete with a generous walk-in closet, while each bedroom opens to a balcony through classic French doors, creating a seamless connection to the outdoors. A downstairs spa-inspired bath elevates daily living with heated floors, a steam shower, and ambient lighting, and three fireplaces throughout the home add warmth and timeless appeal. The backyard unfolds as a private, park-like retreatthoughtfully designed with an expansive deck, elegant pergola, and paved patio ideal for entertaining or quiet relaxation. Lush, drought-tolerant landscaping is complemented by mature fruit trees and a serene fountain, creating a tranquil setting that invites seamless indoor-outdoor living. Additional highlights include a spacious 2-car garage with storage, Tuff Shed, EV charger outlet, and energy-efficient systems throughout. Ideally located near everyday conveniences and local favorites, you’ll find shopping just minutes away at Trader Joe’s, Sprouts, Target, Nordstrom Rack, and HomeGoods. Enjoy a variety of nearby dining options including Los Cerros, Cafe Soleil, Sue’s Place, Pear Street, Butter Pecan Bakery, and The Good Table Caf at Planting Justice Nursery. For a scenic escape, Castro Ranch Road and Alhambra Valley Road lead to Balestrieri Family Farmperfect for wine tasting and weekend outings. Commuting is effortless with a 12-minute drive to Orinda BART via San Pablo Dam Road, convenient access to nearby AC Transit bus lines, and seamless connectivity to Interstates 80 and 580, as well as Highways 4 and 24. This exceptional location offers the perfect balance of convenience and tranquil East Bay living.