Experience the pinnacle of Newport Beach living in this brand-new, single-story masterpiece spanning 4,677 square feet of refined design and modern luxury. Set on one of Dover Shores most desirable streets, this architectural gem blends sophisticated style with effortless indoor-outdoor living. Step inside to soaring ceilings and a dramatic 33-foot motorized sliding glass wall that opens seamlessly to your private backyard retreat complete with a sparkling pool, BBQ island, firepit, and elevated deck for entertaining under the sun or stars. The heart of the home is the chef-inspired kitchen, featuring Thermador appliances, Le Blanc quartzite countertops, and a walk-in pantry, all framed by custom cabinetry and natural stone finishes found throughout the residence. The 1,000 sqft primary suite is a sanctuary, boasting a coffee bar, his-and-hers layout, makeup vanity, freestanding tub, and an oversized shower wrapped in breathtaking Michelangelo Dolomite quartzite slabs. Three additional ensuite bedrooms, a glass-enclosed office, and a den provide versatility for family and guests alike. Upstairs, the expansive rooftop deck delivers panoramic, forever Back Bay views, complete with a firepit, BBQ, and bathroom, creating the ultimate space for sunset gatherings. Additional highlights include a 3-car garage and a fully integrated Savant home automation system, ensuring every modern convenience is at your fingertips. This is modern coastal living at its finest. 1918 Santiago is a home where every detail is intentional, every finish is natural, and every view is extraordinary.