816 15TH Avenue NE Prime location in the heart of Historic Old Northeast! This newly renovated 1920s four-bedroom, 2, 884-square-foot home with a detached 726-square-foot, two-bedroom guest house/ADU is located just steps from North Shore Park and the waterfront. The inviting front porch and the redesigned layout offer a seamless flow from the living, dining and kitchen areas for casual entertaining, plus an informal family room and sitting area overlooking the pool, while the formal living room features a wood-burning fireplace. The gourmet kitchen features all-new soft-close cabinetry, built-in pantry storage, quartz countertops, an oversized center island, Thermador appliances and gas cooking. The primary suite includes a fully renovated ensuite bathroom, walk-in closet and flexible space for a dressing room, home office or nursery. Three additional bedrooms and an updated hall bath complete the second floor, with Blanco Dolomite marble tile in both full bathrooms. Additional updates include new 7.5-inch Shaw engineered hardwood flooring, hurricane-impact-rated windows and doors, new Hardie board siding and trim, new electrical and plumbing, two new HVAC systems with new first-floor ductwork, and a new tankless water heater. Outside, the fully fenced backyard offers a private tropical oasis with palms, new landscaping, artificial turf, a putting green, a renovated pool, and a new hot tub. New pool equipment and automation, plus sealed pavers at the driveway and entry, complete the space. The detached two-car garage includes a two-bedroom, one-bath guest house/ADU above with a full kitchen, offering flexible space for guests, extended family, a home office, or a potential rental opportunity. Don't miss your chance to experience one of the most desirable neighborhoods within walking distance of vibrant downtown St. Petersburg! ****Listing video includes digitally enhanced effects and minimal decorative accessories. Furnishings, structural elements and property features are unaltered and unchanged.