Welcome to 733 Atlantic Street, a custom-built home in the heart of Old Mount Pleasant offering thoughtful design, charm, and one of the largest Accessory Dwelling Units in the neighborhood.Inside the main home, no detail has been overlooked. The spacious owner's suite features a private outdoor shower seamlessly connected to the bathroom--a favorite luxury of the current owners.The kitchen is equally impressive, with high-end KitchenAid appliances (including fridge drawers, a 6-burner gas cooktop with hood, and built-in microwave), custom cabinetry, and a massive 9-foot island that anchors the space. Hardwood floors, shiplap accents, a gas fireplace in the living room, and built-in storage throughout highlight the home's craftsmanship.Upstairs, you'll find threetucked-away bedrooms. One has its own private bath, while the other two share a Jack-and-Jill. Down the hall is a spacious reimagined laundry room with two full sets of washers/dryers, a sink, counters, and abundant cabinetry designed to make everyday living more functional. For added convenience, there's also a secondary laundry closet near the guest bedrooms.Step outside to a screened-in porch with a wood-burning fireplace and wet bar, perfect for year-round entertaining. The backyard is private and offers an ideal spot for a plunge or cocktail pool, while the fully fenced front yard provides a safe and welcoming area for kids or pets to play.The incredible guest cottage is a rare find, complete with its own bedroom, bathroom, full kitchen, laundry, and multiple living/flex roomsideal for long-term guests, extended family, or even potential rental income.Additional features include:-- Whole-house water filtration system--Built-in electric car charger--Encapsulated crawlspace with dehumidifier--Home located in X zone/no flood insurance requiredAll of this is located in one of Mount Pleasant's most sought-after neighborhoods just minutes from Shem Creek, Sullivan's Island, and downtown Charleston.