Welcome to 905 Hydra Ct, a beautifully designed two-story estate at the end of a quiet cul-de-sac in the highly desirable Rancho Santalina community of San Marcos. This 5-bedroom, 4-bathroom energy efficient home with owned solar offers 3,908 sqft of light-filled living space with modern comfort and multi-generational flexibility. A grand entryway opens to an expansive great room, ideal for daily living and entertaining. The gourmet kitchen features an oversized center island, premium appliances, a walk-in pantry, and a dining area flowing into the main living space. A private guest bedroom and full bathroom offer space for extended family, guests, or a home office, and a 2-car garage provides ample storage including EV charge station. Upstairs, a massive bonus loft creates a versatile media room, play space, or tech center. The primary suite is a true sanctuary with a spa-like en suite featuring dual vanities, a soaking tub, a separate walk-in shower, and a large walk-in closet. Three additional bedrooms, an upstairs laundry room, and well-appointed bathrooms complete the top floor. Set on a 6,097 sqft lot, the private backyard offers a low-maintenance space to enjoy Southern California weather. Minutes from top-rated San Marcos schools (Joli Ann Leichtag Elementary, San Marcos High), parks, dining, shopping, and easy highway access.