Behind large private gates at the end of a long, tree-lined driveway off Mandeville Canyon Rd, this nearly one-acre compound spans two parcels and offers complete privacy enclosed by mature trees. Designed by architect Lise Claiborne Matthews, AIA, ASID. Driven by the philosophy that no two clients are alike, her designs never repeated themselves; yet all embraced the same core values: soft natural light, a layout tailored to the rhythm of family living, and uncompromising detail to its finishes. Defined by what she termed understated elegance, the home showcases a classic shingled exterior paired with impressive interior spaces boasting soaring ceilings, gracefully curved glass, and French doors leading outward at nearly every turn, all highlighted by exceptional millwork and decorative molding. The main floor effortlessly unites grand formal areas with relaxed daily gathering spaces. A light-filled living room featuring a marble fireplace flows seamlessly into the formal dining room, while a sunken family room provides a cozy retreat with a secondary fireplace and built-in media center. Designed for both everyday cooking and entertaining, the gourmet kitchen centers on a rich butcher-block island, equipped with double sinks, a premium Viking range, Sub-Zero refrigeration, two Miele dishwashers, and a walk-in pantry, extending into a sun-drenched breakfast nook and adjacent sunroom. A private guest suite, an expansive study, and a sixth bedroom finish this level, each framed by lush garden views and soft ambient light. An emphasis on solitude and retreat defines the architectural design. Distinct living quarters offer complete independence while maintaining a smooth fluid flow from the upper-level sleeping sanctuaries down to the lower pool house. The luxurious primary suite serves as a private haven, complete with an intimate sitting area, French doors opening to an exclusive balcony, dual walk-in closets, and an elegant marble spa-bath featuring double vanities, a steam rain shower, deep soaking tub, and separate water closets. The additional secondary bedrooms are impressively proportioned and bathed in sunshine. Crafted for ultimate relaxation and entertainment, the lower level features a dedicated cinema, billiards hall, climate-controlled wine cellar, soothing sauna, home gym, playroom, convenient kitchenette, and a central light atrium. The magnificent grounds showcase a 50-foot saltwater pool positioned on the northwest side, accompanied by a tranquil koi pond, expansive lounging decks, and multiple open-air seating nooks. A standalone gym facility with potential for ADU conversion, a spacious three-car garage, and a sweeping motor court accommodating over twelve vehicles round out this extraordinary Westside estate.