Nestled in the exclusive, private gated community of Mountain Park in Calabasas, this luxurious estate with brand new 1+1 600 sq ft detached guesthouse, offers 8 bedrooms, 7 bathrooms, and 5,357 sq ft of refined living space on a generous 1.3-acre lot. Updated in 2019, the downstairs features stunning Italian marble flooring and a completely remodeled kitchen has a large center island with waterfall countertops, a breakfast area and butler's pantry with built-in espresso maker and wine fridge. The grand foyer, accessed through double doors, showcases a chic floor-to-ceiling crystal chandelier that cascades down to a marble pedestal adorning the elegant sweeping staircase and open catwalk. The formal living room impresses with a two-way see-through fireplace with dramatic floor-to-ceiling marble surround. The media room is perfect for entertaining, complete with a built-in wet bar, motorized dropdown screen, and HD projector. High ceilings and abundant windows fill the home with natural light. The main level includes 2 bedrooms and 2.5 bathrooms, while the upper level features a spacious primary retreat that includes an en-suite bathroom with dual sinks, dedicated vanity area, relaxing soaking tub, separate steam shower, and large walk-in closet. Enjoy gatherings in the large recreation room and enjoy the convenience of having an in-home fitness room. Convenience is paramount with a 4-car attached garage, 3-unit zoned AC, upstairs laundry, and a second laundry area in the garage. The stately rear grounds, accessible from the formal dining room, media room, and kitchen, offer resort-like amenities including a built-in BBQ area, covered patio with outdoor bar and two-way fireplace, firepit, private tennis and basketball court, an inground pool with waterfall spa, amongst a park-like setting with retro-style park benches and well-appointed lamp posts. The detached guesthouse, fully renovated in 2023, includes 1-bedroom, 1-bathroom, and kitchenette. This elite private community offers various sport courts, exercise trails, dog park, playground area, and 24-hour guard-gated security, making this home a true haven of luxury and exclusivity.