Experience the timeless appeal of this Mid Century Modern architectural masterpiece nestled in the highly desirable neighborhood of Irvine's University Park! Located at the end of a cul-de-sac, 23 Ash Tree Lane is a tastefully updated home boasting modern upgrades throughout while maintaining original architectural details - including a floating staircase and a lush central Atrium. Spanning 2,775 square feet of open concept living space, the 4 bedroom, 2.5 bathroom home seamlessly integrates the living spaces on the main floor, while providing privacy with all four bedrooms upstairs (Seller has City-approved plans that include adding a downstairs 5th bedroom). Upon entry, a unique atrium brings in an abundance of natural light. A large Great Room with living and dining spaces is anchored by a central fireplace and access to the backyard - creating the ideal space to entertain with southwest exposure for dazzling sunsets. The backyard also enjoys unique access to the tranquil greenbelt and community amenities through a private gate. A Separate Family Room just off the Kitchen provides a cozy retreat for movie nights or quiet moments and peaceful views of the front Courtyard. The spacious Kitchen is a chef's dream with white cabinets, bronze fixtures, stainless steel appliances, quartz countertops, sleek open shelving, a walk-in pantry and bar seating. A 2-car garage, Powder Room, and dedicated Laundry Room with storage round out the main floor. Three bedrooms and a hall bath are conveniently located upstairs along with the Primary Suite. The enormous Primary Suite is a true sanctuary with a balcony overlooking the community greenbelt and features a cozy fireplace plus ample space for a reading nook or home office. The Primary Ensuite is a spa-like oasis with dual sinks, separate soaking tub, vanity area and a steam shower with a rain showerhead. With a location like this, convenience is at your doorstep with quick access to neighborhood amenities including walking trails, sports courts, playgrounds and an Olympic-sized pool with spa. The home also has priority admission to University Park & Vista Verde Elementary as well as easy access to the 405, amazing shopping, dining and recreational experiences like Tanaka Farms, Strawberry Farms Golf, Adventure Playground, Spectrum, and Newport Beach. Don't miss the opportunity to own this exceptional mid-century modern home in desirable University Park. Schedule your private tour today and experience it firsthand!