4458 Katherine Avenue Experience refined California living in this exceptional modern farmhouse, ideally situated in Sherman Oaks' desirable Library Square neighborhood. Sophisticated design, advanced technology, and effortless indoor-outdoor entertaining come together beautifully throughout the property. The home offers five bedrooms and four-and-a-half bathrooms in the main residence, plus a detached guest retreat with an additional room and bathroom-perfect for visitors, a private office, fitness studio, or creative space. Soaring ceilings and oversized windows fill the open living areas with natural light, while the beautifully appointed kitchen features Thermador appliances, quartz countertops, custom cabinetry, and a generous walk-in pantry. Expansive sliding doors connect the interior to a private, resort-style backyard complete with a pool, spa, fire pit, built-in BBQ, and low-maintenance landscaping surrounded by lush greenery. The impressive primary suite includes vaulted ceilings, a fireplace, private balcony, spacious walk-in closets, and a spa-inspired bathroom with a soaking tub, multi-head shower, dual vanities, and dedicated grooming station. Additional highlights include multiple fireplaces, custom built-ins, designer lighting, a wine display, an updated surround-sound system, whole-home water purification, armored doors, high-end camera surveillance, and integrated smart-home controls for lighting, climate, audio, and security. Conveniently located near Ventura Boulevard, Westfield Fashion Square, Whole Foods, Trader Joe's, restaurants, parks, and the 101 and 405 freeways, this remarkable property offers an exceptional combination of luxury, privacy, and modern convenience.