Come fall in love with this fabulous pool home with HUGE VIEWS! Centrally located in the desirable hills of Diamond Bar and within the highly acclaimed Walnut Valley Unified School District, this beautifully upgraded residence offers an exceptional blend of space, privacy, and refined design. Situated on an 8,493 square foot lot, you will find 3212 square feet of finished living space. This includes a main floor bedroom and bathroom, family room, living room, formal dining room, and huge bonus room that spans the length of the house! Bonus room is actually larger than some ADU's, 500 +/- square feet with its own entrance, egress windows, and separate central AC! This space might be perfect for a junior ADU conversion or multi-generational living! You could also create a 5th bedroom in this area by adding a wall and a door near the built-in cabinets. Upstairs you will discover 2 more bathrooms and 3 bedrooms. Primary suite has huge mountain views, vaulted ceilings, and ensuite bath with dual sinks. As you enter the home you are welcomed by a grand foyer with soaring ceilings and an elegant-curved staircase that creates an immediate impression of scale and architectural character. Private rear yard has views, view deck, and fabulous lap pool that is perfect for exercise and entertaining family and friends. Bright, airy, and well-proportioned living spaces are complemented by a three-car garage and a versatile floor plan that adapts to a variety of lifestyles. Don't miss the dual AC units and gas fireplace, as well as a gas stove in the spacious kitchen. All 3 Bathrooms and the kitchen have been updated, interior paint is fresh, home features smooth ceilings, recessed lights, PEX re-pipe, and a whole house fan. Enjoy the best of both privacy and convenience, with easy access to shopping, hiking trails, major freeways, restaurants, and highly rated schools, this location is hard to beat. This home presents a rare opportunity to own a spacious, design-oriented property in one of Diamond Bar's most sought-after hillside communities. Special bonus: NO HOA! Don't wait, this one will not last!