87 Del Oro Lagoon Waterfront Luxury in Bel Marin Keys. Experience resort-style living every day in this exceptional Mediterranean waterfront residence - one of the largest and most finely crafted homes in Bel Marin Keys. Originally built in 1987 and completely redesigned and expanded in 2006, this 4-bedroom, 3-bath masterpiece spans approximately 3, 532 sq. ft., offering significantly more living space than most homes in the neighborhood. Every element of this home reflects thoughtful design and superior quality. Sunlight pours through oversized Pella windows, framing sweeping water and greenery views, creating a seamless indoor-outdoor connection. Walnut hardwood floors flow through the main living areas, complemented by Italian travertine in the chef's kitchen and family room. The gourmet kitchen is a true centerpiece, featuring a 48-inch Thermador dual-fuel range, Gaggenau steam and convection ovens, two Bosch dishwashers, a Sub-Zero side-by-side refrigerator/freezer, and Sub-Zero wine storage for 147 bottles. The expansive island and open family area are designed for both everyday living and effortless entertaining - all set against breathtaking water vistas. Step outside to your private waterfront haven: a covered stone patio with built-in 42'' BBQ, sink, refrigerator, and cabinetry - perfect for gatherings - flowing to a spacious natural stone terrace and down to an ipe deck and private dock. From here, enjoy waterskiing, kayaking, paddleboarding, or simply relaxing beside the tranquil water. The primary suite is a serene retreat, opening to a private balcony - the perfect place for morning coffee or peaceful afternoons with a book and sweeping views. Dual walk-in closets provide exceptional storage, while the spacious spa-inspired bath offers comfort and privacy, creating a true sanctuary within the home. Additional highlights include a dedicated office with custom cabinetry, HardieBoard siding, real-stone exterior accents, a whole-home generator, and meticulous craftsmanship throughout - features rarely found in this community. This is more than a home; it's a lifestyle - an exceptional blend of elegance, comfort, and waterfront adventure in one of Marin's most unique neighborhoods.