Welcome to 340 9th Street, a newly constructed coastal-modern home in one of Atlantic Beach's most desirable locations. Enjoy a true walkable and golf-cart-friendly lifestyle with easy access to the beach, Atlantic Beach Country Club, neighborhood parks, dining, and shopping. Designed for both luxury and functionality, the chef's kitchen features a full suite of premium Thermador appliances, custom cabinetry, an oversized island, and a dedicated wine and beverage refrigerator. A fully equipped catering kitchen (scullery) offers an additional refrigerator, dishwasher, oven/microwave, sink, and extensive storage--ideal for entertaining while maintaining a clean main kitchen. The open-concept living space is filled with natural light and seamlessly connects to the outdoor living area, creating the ultimate indoor-outdoor flow. A modern fireplace and custom millwork add warmth and sophistication throughout. The first floor includes a flexible guest suite or office with a full bathroom and walk-in shower, perfect for visitors or remote work. The owner's suite is a private retreat featuring a vaulted ceiling, expansive natural light, and a spa-inspired bathroom with generous countertop space, dual vanities, and a walk-in shower with a soaking tub inside--offering a true luxury experience. Dual walk-in closets provide ample storage and thoughtful design. Upstairs, a spacious retreat/flex space is surrounded by four en-suite bedrooms, each with its own private bathroom. The oversized laundry room includes dual washer and dryer sets, a utility sink, and dedicated folding space. Additional features include a custom mudroom with built-ins, a functional drop zone for everyday organization, and a garage with high ceilings, perfect for Monkey Bar storage, and pre-plumbing for a beachside washer/dryer setup. The backyard is designed for entertaining, featuring a newly constructed pool with a fire feature, Trex decking, and space pre-plumbed for an outdoor kitchen. Gas lanterns and propane connections enhance the coastal ambiance. This home offers the perfect combination of new construction, luxury finishes, walkability, and proximity to the beach, making it a standout opportunity in Atlantic Beach.