4437 Calhoun Avenue Set behind private gates on a quiet, tree-lined street in the coveted Library Square neighborhood, this newer construction estate offers a 5-bed, 5.5-bath main residence and 1-bed, 1-bath detached ADU. Stepping inside, you are welcomed by a spacious open-concept floor plan defined by soaring 11-foot ceilings and expansive walls of glass that flood the interiors with natural light. The living and dining areas flow seamlessly into the gourmet chef's kitchen, appointed with top-of-the-line Bertazzoni appliances, custom cabinetry and an oversized waterfall island. Floor-to-ceiling sliding glass doors extend the living space onto the patio, creating an effortless indoor-outdoor flow to a private backyard retreat highlighted by a sparkling pool and spa. The main residence offers five generously sized ensuite bedrooms, including a luxurious primary suite that features a private balcony, wet bar, custom walk-in closet and spa-inspired bath complete with a soaking tub, oversized shower and dual-sink vanity. Adding exceptional versatility, the 479 sq. ft. ADU has its own address, a living room, full kitchen, bedroom and bathroom, providing an ideal space for guests, multigenerational living, a home office, gym, or whatever your lifestyle requires. Fully integrated smart-home technology places control of the climate, lighting, fireplaces and speakers at your fingertips, while additional amenities include a dedicated laundry room, security cameras, solar panels, Hansgrohe fixtures throughout, three-zone HVAC and an attached two-car garage. This property is ideally located nearby exceptional dining, shopping and entertainment options found along Ventura Boulevard and at Westfield Fashion Square.