Beautifully remodeled single-story home plus a newly constructed ADU, set on an expansive ~0.38-acre lot offering space, privacy, and versatility. This fully reimagined Craftsman residence is the hidden gem you've been waiting for, combining timeless charm with thoughtful, high-quality upgrades throughout. Main House (12822 Fairhaven Ext): Offers approximately 1,972 square feet with 4 bedrooms and 2.5 bathrooms, thoughtfully designed with an open layout and abundant natural light. No detail has been overlooked in the extensive upgrades, including full foundation reinforcement with insurance-approved seismic bracing, a fully owned 8 kW solar system compatible with NACS EV charging, complete roof replacement, custom white oak exterior doors, new low-E insulated windows, all new ductwork, and a fully insulated 4-car garage with epoxy flooring-ideal for a car collector or workshop enthusiast. Ideally located within the award-winning Tustin Unified School District, the property offers a rare balance of a peaceful, rural feel while remaining in the heart of Orange County, with convenient access to the 5, 22, 55, 261, and 241 freeways just minutes away. Detached ADU (12832 Fairhaven Ext): Completed in 2024 by Keynote Custom Builders, this sleek modern residence offers approximately 980 square feet with 2 bedrooms and 2 bathrooms. Designed with a clean, contemporary aesthetic, it features floor-to-ceiling windows, exceptional natural light, and exposed polished concrete flooring. The ADU also includes fully paid solar, enhancing energy efficiency and long-term value. The expansive lot provides ample parking, generous outdoor space, and flexibility for a variety of lifestyles. Ideal for multigenerational living, guest accommodations, or rental income, this property presents a rare opportunity to own a fully upgraded home with a newly built, design-forward ADU in a prime location.