Introducing 5021 Surf Avenue, a masterfully designed residence located in Sea Gate-Coney Island's premier oceanfront gated community. This legal two-family home is currently configured as a grand single-family layout, offering over 4,100 square feet across three expansive levels, plus a fully finished 1,000+ sq ft basement. Set on an oversized 65" x 165" lot, the property blends architectural elegance with thoughtful functionality, all within one of Brooklyn's most private residential enclaves. The main floor features an open-concept layout anchored by a chef-approved kitchen with a dramatic quartz waterfall island, custom navy cabinetry with copper hardware, full-height slab backsplash, and top-of-the-line German WOLF appliances. Adjacent living and dining areas are framed by oversized windows, wide-plank oak floors, and two stunning fireplaces, creating a warm yet elevated ambiance. A floating glass-paneled staircase adds architectural fluidity between levels, while radiant underfloor heating and multi-zone air conditioning ensure year-round comfort. Upstairs, the sun-drenched primary suite offers a true retreat, complete with a boutique-style walk-in closet and spa-quality bath featuring a freestanding soaking tub, dual vanities, and a mosaic-tiled steam shower. Additional bedrooms are generously scaled, including a top-floor suite with vaulted ceilings and bay water views, along with a dedicated media lounge and flex space ideal for work-from-home or guest quarters. The fully finished lower level offers a gym, playroom, and recreation lounge, adaptable to any lifestyle. Outdoors, a sprawling backyard is designed for relaxation and entertaining, with a built-in jacuzzi, large patio, and newly planted trees enhancing the landscaped setting. A private driveway offers parking for multiple vehicles in addition to the garage. Sea Gate residents enjoy 24/7 security via a private police department, access to a members-only beach and beach club, two playgrounds, a basketball court, pet walking areas, and a full-service bath and spa facility. Combining timeless design, superior craftsmanship, and resort-style living, 5021 Surf Avenue is a rare and exceptional offering just moments from the Atlantic shoreline.