Discover a rare opportunity to own a duplex in Aptos' highly sought-after Rio Del Mar neighborhood. Tucked away on a quiet cul-de-sac just steps from the sand, 307 Treasure Island Dr offers the perfect blend of coastal living, income potential, and long-term value. The property features two residences totaling approximately 1,400 square feet. The upper 2-bedroom, 1-bath home is filled with natural light and features vaulted ceilings and a private balcony for enjoying the ocean air. The lower 1-bedroom, 1-bath unit offers a separate entrance and private outdoor space, ideal for rental income, guests, or extended family. An attached two-car garage provides off-street parking and additional storage. Ideal for investors, owner-occupants seeking supplemental income, or those searching for a beach-close retreat, this versatile property offers flexibility rarely found in Rio Del Mar. Live in one unit and rent the other, create space for extended family, or enjoy a unique coastal investment opportunity. Enjoy easy access to Rio Del Mar and Seacliff beaches, Aptos Village, local restaurants and shops, miles of hiking and biking trails, and convenient Highway 1 access. This is a unique opportunity to own a versatile property in one of Aptos' most desirable coastal communities.