Welcome to 16857 Colven Rd, a beautifully upgraded and private Granada Hills retreat nestled on a rare 20,564 sq ft flag lot backing directly to the 14th tee box of Knollwood Country Club Golf Course. This 3-bedroom, 2.5-bathroom home offers approximately 2,516 sq ft of interior living space, with an additional 545+/- sq ft sunroom and 300+ sq ft pool house with bathroom—ideal as a guest retreat, studio, or flex space. Buyer to verify permit status and square footage. Upgrades include vaulted ceilings, recessed lighting, tiled floors, Marvin Windows with Plantation Shutters, a 60' glass-enclosed sunroom, and a finished garage with insulation, drywall, and recessed lighting. A tankless water heater ensures comfort and efficiency, and a 2021 mini-split system provides zoned cooling. Paid-off solar panels (installed in 2015) offer long-term energy savings. The property is accessed via a 160' private driveway leading to a sprawling ranch-style home. The front yard features custom lighting, fountains, ample parking, and a 320 sq. ft. 4-hole putting green. A custom wrought iron gate secures the front porch, blending curb appeal with peace of mind. The remodeled kitchen boasts rich cabinetry, a two-level granite island, tile floors, a garden window, and recessed lighting. It opens to a spacious den, and a solid wood French door connects to the west patio. The sunroom features tinted windows, recessed lighting, and French doors on both sides, plus two 10’ Longview sliders and a 13’ Marvin wood-clad French door. The primary suite offers tiled floors, recessed lighting, and a custom walk-in closet. The spa-style bathroom includes a stone accent wall, soaking tub, and a large shower enclosed with ¾” sapphire glass. Two additional bedrooms share a ¾ bath and feature mirrored closets, recessed lighting, ceiling fans, and mini-split AC. The backyard is a true resort-style oasis with terraced landscaping, remodeled PebbleTec pool and spa, built-in BBQ and fire pit, basketball court, toddler playground, and private driving range. Fruit trees—including Meyer lemon, orange, grapefruit, and pomegranate—along with a cactus garden and Queen Palms complete the scene. A rare opportunity to own a one-of-a-kind home on a premier lot with golf course access, quality upgrades, and lifestyle amenities.