417 3RD STREET Under contract-accepting backup offers. Live the Key Largo dream from this beautifully maintained oceanside retreat in Largo Sound Village. Built in 2016 and only 10 years young, this 4-bedroom, 3-bath property offers more than 2, 500 square feet of flexible living space with the strength, efficiency and layout buyers want in the Florida Keys. Unlike many older Keys homes, this residence was thoughtfully built to modern expectations with solid poured-concrete walls, a metal roof, impact windows and doors, spray-foam-insulated attic and an elevated Flood Zone X setting designed to help mitigate flood risk and provide peace of mind. The upper residence features 3 bedrooms, 2 baths, 9-foot ceilings and a bright open floor plan made for gathering. The kitchen is the heart of the home, offering abundant cabinetry, granite counters, stainless appliances, coastal mosaic backsplash and an oversized island ideal for entertaining, casual meals and serving the day’s fresh catch. French doors open to a 43-foot-wide covered balcony with plenty of room for outdoor dining, lounging and evening cocktails in the island breeze. Downstairs, a well-appointed 1-bedroom, 1-bath guest apartment includes its own living and dining area, kitchenette/wet bar, refrigerator and covered porch, creating exceptional flexibility for guests, extended family, multigenerational living or potential rental appeal. A separate air-conditioned office provides a comfortable private workspace. Parking and storage are major standouts. The oversized 26-by-30-foot two-car garage is a rare and valuable Keys feature with room for vehicles, boating gear, dive equipment, fishing tackle, paddleboards, bikes and tools. The generous lot and open parking area provide ample space for a boat, RV, trailer and other toys, making this property especially appealing for buyers who want to fully enjoy the Keys lifestyle without sacrificing practicality. A new central A/C installed in 2025, tankless water heater, buried propane tank, gas dryer and gas-range hookup add comfort and efficiency. Easy-care tile flooring fits perfectly with relaxed coastal living, and furnishings are available as an option for buyers seeking a more seamless transition. The neighborhood boat ramp is just steps away, placing Largo Sound and the Atlantic within easy reach for fishing, diving, snorkeling, kayaking, paddleboarding and unforgettable days on the water. Key Largo is known as the Diving Capital of the World, with John Pennekamp Coral Reef State Park, the iconic Christ of the Abyss, world-class reefs, waterfront restaurants, fresh seafood, live music and endless boating adventures nearby. As the first of the Florida Keys, Key Largo offers the tropical escape buyers dream about while still providing convenient access to the mainland and South Florida. Rentals are permitted with a 28-day minimum, creating potential for monthly or seasonal income when the home is not being personally enjoyed. With a newer 2016 build, high-end finishes, separate guest accommodations, rare garage space, abundant parking and boat-friendly access, this property is ideal as a primary residence, second home or Keys investment. Whether your perfect day means chasing mahi offshore, snorkeling over coral reefs, hosting friends on the balcony or simply slowing down beneath the palms, this is the Key Largo lifestyle buyers come searching for. Opportunities like this are few and far between, and serious buyers should act quickly before this one is gone.