Welcome to 55 Hartman – Irvine’s Ultra-Modern Three-Story Estate in the Prestigious Guard-Gated Community of Altair. This architectural masterpiece offers 5,029 sqft of luxurious living on a private 7,500 sqft corner lot. With striking design, rare vertical space, and seamless indoor-outdoor flow, this one-of-a-kind residence sets a new benchmark for modern elegance in Irvine. Step inside to a dramatic 3-story foyer with floor-to-ceiling windows that flood the home with natural light. The fully integrated Control4 Smart Home system allows effortless control of lighting, audio, climate, security, and motorized window treatments. The expansive great room connects to the backyard through a full wall of sliding glass doors that pocket into the wall, creating a true indoor-outdoor living experience. The adjacent sunroom, with motorized shades, transforms into a tea room, children’s playroom, or lounge. The chef’s kitchen boasts a massive quartz island, professional-grade stainless steel appliances, and custom cabinetry, flowing into a bright dining area and open-concept living space—perfect for everyday luxury or entertaining guests. The resort-style backyard includes a sparkling custom pool and spa, a sunken firepit lounge, and a built-in BBQ island, ideal for alfresco gatherings. Lush landscaping is maintained by an automated irrigation system for year-round ease. Upstairs, the elegant primary suite offers two custom walk-in closets and a spa-inspired bath with soaking tub, dual vanities, and glass shower. The third floor has been enclosed and reimagined as a peaceful tea room with large windows and a flexible entertainment area with wet bar and half bath. This home features nearly 1 milliion in high-end upgrades throughout, including designer finishes, custom details, and cutting-edge smart technology—delivering a lifestyle of sophistication, comfort, and effortless luxury. Altair offers world-class amenities including a 7,000 sqft clubhouse, resort pools, tennis courts, parks, and fitness centers. Minutes from Irvine Spectrum, Great Park, and award-winning Irvine Unified schools.