1308 - 1310 S Phillips Ave, Sioux Falls, SD 57105Beautiful Craftsman Four Square side-by-side duplex in the historic McKennan Park neighborhood. Renovated in 2015 with complete upgrades to plumbing, electrical, HVAC, and roofing systems while retaining its classic architectural features and timeless charm. Currently owner-occupied on one side with the other side providing rental income. Continue the current arrangement and enjoy living in one of Sioux Falls' most sought-after historic neighborhoods while generating significant income or take advantage of the property's strong double income-producing potential by renting out both units. Both sides feature two spacious master suites each with private bathrooms finished in high end marble or tile. There's also a convenient main-floor powder room for guests. Custom kitchens are designed to maximize workspace and storage, offering granite countertops, abundant cabinetry, original built-in pantries, and high-end stainless-steel appliances. Finished lower-level family rooms and main-level sunrooms provide added living space, while separate front and rear entrances, mudrooms with built-in benches, and generous storage in the attic and garage will enhance everyday conveniences. The owner's residence showcases exceptional added upgrades, including travertine tile, in-floor heating, a fireplace, custom new and historic built-ins and wainscoting, new wood floors, a climate-controlled wine cellar, a floor-to-ceiling tiled walk-in shower, and a chef's gas range with direct exterior ventilation. The second unit offers a highly desirable open main floor layout with spacious living areas, abundant storage, and features designed to support strong rental demand and long-term occupancy. Outdoor amenities include a heated 528-square-foot garage with substantial attic storage, a beautifully landscaped semi-private patio, underground sprinklers, and low-maintenance landscaping.Located just two blocks from McKennan Park, one-half mile from the Avera campus, and less than one mile from the Sanford campus, this property offers a rare combination of historic character, modern convenience, and investment flexibility. Recently renovated properties offering this combination of historic charm, modern systems, luxury finishes, and income-producing potential rarely become available in McKennan Park. Whether you're seeking an elegant owner-occupied residence with supplemental income or a premium double investment opportunity in one of Sioux Falls' most desirable neighborhoods, this property delivers.