This is one of the most complete indoor-outdoor entertainment homes to hit the market in years, and a rare opportunity after 27 years of ownership. Set on a premium .41 acre corner cul-de-sac lot in the most sought after Simi Valley Silverthorne Community and spanning over 4,000 sq ft, this property stands apart with features that are exceptionally difficult to find in combination. From true gated RV parking that accommodates a huge 45 foot long RV, with full hookups and backup generator capability to power the house in event of an outage, a resort-style backyard built to host 100+ guests, this home was designed to deliver a lifestyle, not just square footage. Inside, the home blends warmth and craftsmanship with custom stone fireplaces, reclaimed wood accents, and a fully remodeled chef's kitchen featuring Viking appliances, Waterstone fixtures, custom cabinetry, and striking copper and stone finishes. Multiple entertainment spaces, including a dedicated game room with a copper bar, create a layout ideal for hosting at scale. The executive office is a standout feature with full mahogany built-ins, wainscoting, and a custom granite desk, offering a true luxury workspace. Upstairs, oversized bedrooms, a private en-suite guest room, and an expansive primary suite with dual fitness rooms provide both comfort and flexibility. The primary bath and fully built-out closet deliver a spa-like experience. The backyard rivals private resorts, anchored by a fully automated pool with slide, grotto, waterfall, and spa, alongside a covered patio designed for large gatherings. The full Viking outdoor kitchen, outdoor fireplace with TV, heaters, fans, misting system, and smart-controlled lighting create an environment that is nearly impossible to replicate at this price point. Additional features include a fully finished garage with extensive storage, Tesla charging, tankless water heater, whole-home Wi-Fi system, full security setup, solar, LED lighting, and newer HVAC systems. For buyers seeking a rare combination of scale, upgrades, giant RV functionality, and true entertainment capability, this is a one-of-a-kind opportunity.