A Private Hilltop Estate in Poway. Perched on a serene 3-acre hilltop in the exclusive gated community of William Ranch—an enclave of just 10 estate homes—this custom single-story residence offers luxury, sustainability, and peaceful living in the heart of Poway. The main home features 4 bedrooms and 4 bathrooms, with a detached casita that includes its own full bath—ideal for guests, multigenerational living, or a private office. The thoughtfully designed floor plan maximizes privacy while maintaining seamless flow for daily life and entertaining. Enter through a gated front courtyard with fireplace, fountain, and multiple sitting areas that set a tone of tranquility. Inside, 10+ foot ceilings, elegant archways, and oversized sliding doors fill the space with natural light and frame stunning views. The great room and chef’s kitchen serve as the heart of the home, boasting top-of-the-line Thermador appliances, double ovens, a large island with breakfast bar, and a butler’s pantry with wine fridge—perfect for everything from casual meals to formal gatherings. This home stands out for its advanced energy system: a high-efficiency SunPower solar array paired with 3 Tesla Powerwall batteries. The system powers the entire home—including two electric vehicles, water heater, and Modpool filtration—while generating surplus energy, resulting in an annual SDGE rebate. The award-winning Modpool with integrated spa and retractable cover offers a sleek, efficient alternative to oversized traditional pools. With its streamlined footprint and integrated equipment, it delivers everyday enjoyment and spa-like relaxation—without the high cost/upkeep typical of 30,000-gallon pools. The outdoor areas were intentionally designed for drought-conscious, low-maintenance living—no thirsty lawn, just beautifully planned hardscape, defensible space, and natural materials. You’ll enjoy generous outdoor living without the hassle or water costs, with plenty of space to entertain, relax, and take in the views. The location combines the best of both worlds: total privacy and quiet, with proximity to all that Poway and North County have to offer. If you are seeking a traditional neighborhood, this home may not be for you—but if you value serenity, space, and separation from the noise of city life, you’ll find this setting unmatched. Additional Highlights: Two separate 2-car garages (4-car total) + guest parking Luxurious primary suite with sitting area, backyard access, dual vanities, and walk-in closet Detached casita with private entrance and full bath Open, efficient layout prioritizing comfort, function, and privacy A rare opportunity to own a modern, energy-independent, fire-conscious estate in one of Poway’s most desirable communities. Welcome home to William Ranch.