16416 Parthenia St Custom California Ranch with a professionally designed live/work addition, offering approximately 2, 661 square feet of flexible living and executive office space on a beautifully landscaped 7, 752-square-foot lot in the heart of North Hills. Thoughtfully expanded in 2003, the property seamlessly combines a comfortable residence with an exceptional professional office designed for today's home-based business. The residential portion welcomes you through its own private entrance into a bright living room with vaulted ceilings, skylights, and a fireplace. An open kitchen flows into the dining area, while the main level features a spacious primary suite with an en-suite shower, a guest bedroom, two additional full bathrooms, a walk-in closet, and a dedicated laundry room. Just beyond, an expansive recreation room with skylights, a wet bar, and a fireplace opens through sliding glass doors to a lush, private backyard. Designed for entertaining, the backyard is a tranquil retreat featuring mature fruit trees, multiple seating areas, a Viking outdoor kitchen complete with BBQ, side burner, refrigerator, and prep station, plus a swim spa with a counter-current system ideal for exercise or relaxation. The custom-built office addition offers an impressive work environment with high-speed connectivity, including a dedicated T1 line, Cat5 wiring throughout, a 400-amp Milbank electrical panel, two tandem 22kW Generac Guardian backup generators with automatic transfer switches, and a dumbwaiter serving both office levels. A convenient wet bar and coffee station enhance the workspace, while the upstairs executive office features two private balconies, one overlooking the backyard and swim spa, along with a spacious attic providing abundant storage across the length of the office. Additional features include two separate rooftop solar arrays serving the residence and office, a two-car garage with extensive built-in cabinetry and locking metal file storage, mature landscaping, a charming front yard with a peaceful pond and wooden swing, and numerous custom improvements throughout. Whether you're an entrepreneur, attorney, accountant, architect, engineer, creative professional, or anyone seeking an exceptional live/work environment, this distinctive property offers a rare combination of residential comfort, business functionality, and resort-style outdoor living all within a single, thoughtfully designed property.