Mercer Island luxury estate with rare ADU, designer kitchen, and seamless indoor-outdoor living in a premier JayMarc Homes residence near top-rated Mercer Island Schools. The Astoria showcases intentional design and refined craftsmanship, with wide-plank hardwoods extending through the main level, staircase, upper hall, and primary suite for a cohesive, elevated design. The designed kitchen is elevated for both function and entertaining, featuring slab quartz surfaces, waterfall island, statement lighting, striking range hood and walk-in pantry. A rare main-level ADU with private entrance offers exceptional flexibility, multigenerational living, or supplemental income, complete with kitchenette, beverage center and interior access. The primary suite serves as a calm retreat with a soaking tub, oversized rain shower, heated flooring and custom walk-in closet. A versatile bonus room provides additional space for media, work, or recreation. Outdoor living is designed for year-round enjoyment with covered spaces featuring skylights, heaters, integrated audio, and curated lighting-ideal for entertaining or quiet relaxation. Additional highlights include a three-car garage, solar integration, smart-home features, and professionally landscaped grounds and integrated sound system in key areas of the home. Ideally located near parks, dining, shopping, and commuter routes, this Mercer Island home offers both convenience and privacy in a highly sought-after setting.