Perched in the highly coveted Castro Valley Hills, 4683 Proctor Road stands as a masterfully designed, custom estate built in 2025. Spanning 4,216 SF of uncompromising contemporary living, this residence commands breathtaking Bay views from an expansive lot. Inside, soaring ceilings and rich wide-plank hardwood floors frame a split-level open layout. The main floor boasts a European inspired chef's kitchen outfitted with stainless steel appliances, oversized quartz waterfall island, and sleek minimal cabinetry. 5 distinct bedroom en-suites include a spectacular main-level primary retreat with an expansive balcony overlooking the Bay. Lower level serves as an entertainment hub and multi-generational haven. Anchored by a family room and culinary station with connections for a full kitchen setup, 2nd primary suite, dedicated gym, and tea room. Designed for eco-conscious luxury, incorporating energy efficient solar power, dual-zone HVAC systems and EV charging capacity. Low maintenance landscaping gives way to panoramic California vistas across the Bay. This custom estate presents a rare turn-key opportunity for discerning buyers seeking modern design, top-rated schools, impeccable views and an exceptional East Bay lifestyle.