First time on the market in 57 years—this is the kind of Riverside property that rarely becomes available! Set on an expansive .31-acre lot, 5105 Golden Avenue offers a rare combination of space, character, flexibility, and income potential in an established Riverside neighborhood. The main residence features 4 bedrooms and 2 bathrooms with multiple living and gathering spaces, including a living room, family room, dining area, den, and mudroom. Two fireplaces add warmth and character, including one gas fireplace and one traditional wood-burning fireplace. The spacious kitchen offers abundant cabinetry and workspace, while a dedicated indoor laundry room adds everyday convenience. Beyond the primary living areas, the home also features a basement and substantial attic space, providing an uncommon amount of additional usable and storage space. A large covered front porch creates an inviting entrance and another great place to enjoy the outdoors. Adding tremendous versatility is the detached 1-bedroom, 1-bath ADU with its own separate meter—creating an excellent opportunity for rental income, extended family, guests, or multigenerational living. Outside, the 13,504-square-foot lot offers plenty of room to spread out with mature landscaping, lawn areas, multiple outdoor spaces, gated access, a long driveway, and a detached two-car garage. With its 4-bedroom, 2-bath main residence, separately metered 1-bedroom, 1-bath ADU, two fireplaces, oversized lot, basement, attic space, detached garage, and abundant parking, this rare Riverside property offers an exceptional combination of everyday living, versatility, and long-term investment potential.