Perfectly positioned in Zilker's desirable northern pocket just minutes from downtown Austin, this exceptional 2016-built residence offers a rare combination of space, flexibility, and modern design on a 10,250-square-foot corner lot. With 3,516 square feet of total living space, a detached guest apartment, multiple living areas, and a highly functional floor plan, this home offers a level of versatility rarely found in 78704. The 2,975-square-foot main residence is designed for both everyday living and entertaining. The first floor features an open kitchen, dining, and living area with fireplace, dedicated office, sitting area with wet bar, and a spacious primary suite with its own fireplace, built-in storage, and convenient access from the walk-in closet to the laundry room. Upstairs, three additional bedrooms include a private guest suite with full bath and two bedrooms connected by a Jack-and-Jill bath. A second living area with built-in wet bar opens to a balcony with sweeping downtown views, and a second laundry hookup adds exceptional convenience. Above the detached two-car garage, the 541-square-foot guest apartment features its own private entrance from the side street, full kitchen, full bath, laundry closet, built-in storage, and screened balcony. Ideal for guests, multigenerational living, a private office, or rental income, the apartment has a proven history of successful rental use. The private courtyard-style backyard is designed for entertaining with an expansive deck, built-in fire pit, low-maintenance turf, and room to add a pool. Additional features include solar panels, standing-seam metal roof, natural gas generator, and EV charger. Located near Zilker Park, Barton Springs, the Hike-and-Bike Trail, S. Lamar's acclaimed restaurants, and downtown Austin, and zoned to Zilker Elementary, O. Henry Middle School, and Austin High, this is a rare opportunity to own a spacious, flexible home in one of Austin's most coveted neighborhoods!