A rare opportunity to enjoy exceptional space, privacy, and possibilities on an expansive 24,000+ sq. ft. lot in an established Diamond Bar neighborhood. Set behind a gated entrance, this distinctive property offers mountain views, a custom natural-rock pool, generous driveway and parking areas, and an impressive outdoor setting designed for both relaxation and entertaining. The spacious backyard is a true highlight, featuring a fully fenced resort-style pool, multiple gathering areas, mature landscaping, and a separately enclosed garden and orchard with a variety of fruit trees. The size and layout of the lot provide exceptional flexibility for future improvements and may offer potential for an ADU, expanded outdoor living areas, or other enhancements, subject to buyer investigation and all applicable city requirements and approvals. Inside, the home offers soaring ceilings, an elegant entry, and an open, comfortable layout connecting the main living areas to the backyard. Extensive improvements completed in 2021 include updated flooring, kitchen, and bathrooms. The property is also equipped with a leased solar system. Conveniently located near the 60, 57, and 71 freeways, shopping, schools, Cal Poly Pomona, Mt. SAC, and everyday amenities. With its expansive lot, gated privacy, mountain views, resort-style pool, and exciting future possibilities, this property offers a combination of space and versatility that is increasingly difficult to find in Diamond Bar.