Privacy, timeless architecture, and exceptional craftsmanship define this owner-designed Lochwood-Lozier custom estate in the prestigious Reserve at Newcastle. Tucked along a quiet street against a lush greenbelt, the home showcases soaring ceilings, expansive windows, newly refinished hardwood floors, intricate millwork, crown molding, wainscoting, and rich stone detailing. Three thoughtfully designed levels blend grand entertaining with everyday comfort, offering formal and casual living spaces, a chef's kitchen, private office, abundant storage, and five bathrooms. Upstairs, four spacious bedrooms include an additional en-suite bedroom and a luxurious primary retreat with a spa-inspired five-piece bath, walk-in closets, Juliet balcony, and peekaboo views of the Seattle skyline, golf course, Cascade Mountains, and the Pacific Ocean. A versatile upstairs playroom provides space to unwind. The expansive lower level features a fifth bedroom, private theater, wet bar, recreation room, and wine cellar, with room for memorable gatherings of more than 100 guests. A covered, heated outdoor living area with a full kitchen and stone fireplace opens to beautifully landscaped, fully fenced grounds for year-round enjoyment. Whole-home audio and a generator add comfort and convenience. Minutes from Bellevue, Seattle, Newcastle Golf Club, and scenic trails, within the Issaquah School District, this rare estate offers refined Pacific Northwest living and enduring appeal.