Discover an extraordinary opportunity to design and build a custom luxury residence on one of Altadena's most desirable estate parcels. This expansive, flat, double-wide, 20,000+ sq ft. lot with 80' of street frontage is privately positioned at the end of a quiet cul-de-sac. The lot offers both serenity and prestige in a prime neighborhood, near the Altadena Town & Country Club. Once home to a 4,200 sq ft, 5bedroom, 5bath estate lost in the Eaton Fire. The property retains an impressive collection of resort style amenities, all less than three years old. These existing improvements provide a significant financial advantage, saving the future owner hundreds of thousands of dollars in development costs, and dramatically accelerating the build timeline. The grounds are already transformed with premium hardscaping, artificial turf, mature landscaping, and a gated circular driveway. A beautifully designed outdoor kitchen/BBQ, private sports court (basketball/pickleball), and a stunning pool and spa remain intact, offering an unparalleled foundation for your future home. Imagine creating a modern architectural masterpiece with walls of glass, open concept living, seamless indoor-outdoor flow, and breathtaking mountain views. This property offers a rare opportunity to build immediately, with essential infrastructure already in place.