Welcome to 5215 Seashell Avenue, an extraordinary waterfront retreat nestled within the highly coveted enclave of Seagate, where boating, paddleboarding, and unforgettable sunsets become part of everyday life. Perfectly positioned at the end of a quiet cul-de-sac and surrounded by prestigious homes, this exceptional residence offers 110 feet of prime canal frontage with direct access for small boats, jet skis, and endless waterfront adventures. Watch dolphins and manatees glide by from the comfort of your own backyard. Just moments from Waterside Shops, Artis-Naples, fine dining, and Naples' world-renowned beaches, this location is very best of the Naples lifestyle. Thoughtfully reimagined by MHK Architecture and renovated in 2023, this four-bedroom, three-bath residence seamlessly blends sophisticated design with effortless coastal living. Inspired by the timeless appeal of California ranch-style architecture, the home showcases a fresh mid-century contemporary aesthetic filled with warmth, light, and understated elegance. Step inside to discover expansive open-concept living spaces defined by soaring vaulted ceilings, wide-plank light oak hardwood flooring, and striking designer finishes. Walls of glass invite the outdoors in, creating a seamless transition to the home's spectacular waterfront setting and enhancing the sense of space and serenity throughout. At the heart of the home is a stunning chef's kitchen designed for both everyday living and grand entertaining. Featuring sleek European-style flat-panel cabinetry, premium stainless steel appliances, an oversized waterfall-edge island, dedicated bar area, and an inviting dining space, it is as functional as it is beautiful. The private owner's suite serves as a true sanctuary, offering a spacious bedroom with custom accent wall, a beautifully designed walk-in closet with bespoke built-ins, and a spa-inspired bath complete with a freestanding soaking tub, oversized walk-in shower, dual vanities, and a separate water closet. A thoughtful split-bedroom floor plan provides privacy for family and guests, with two additional guest suites and a versatile fourth bedroom currently configured as an office/media room. Additional highlights include a well- appointed laundry room with abundant storage and a two-car garage featuring an epoxy-finished floor. Outside, a resort-style oasis awaits. Enjoy year-round entertaining beneath the covered outdoor living and dining areas, complete with television and ample space to gather. The sparkling pool and spa overlook the tranquil canal, while the waterfront patio with firepit creates the perfect setting for sunset cocktails. Boating enthusiasts will appreciate the floating dock and direct water access, making spontaneous days on the water effortless. Residents also have the opportunity to join the exclusive Seagate Beach Club, offering private access to one of Naples' most pristine stretches of white-sand beach.