Rare opportunity in Steiner Ranch! Located in a gated community on a private .54-acre lot, this exceptional property offers something almost impossible to find in Steiner Ranch at this price— a stunning detached guest house or ADU with 1,239 square feet of living space. Perfect for multigenerational living, long-term guests, a private office, or a creative studio, the guest house features its own living area with custom built-ins, Huge living area, kitchen, spacious private bedroom, full bathroom, storage space, covered porch, and walls of windows overlooking the resort-style backyard. It feels like a home of its own and adds incredible flexibility and value to the property. The custom main home offers approximately 4,246 square feet with 5 bedrooms, 5 bathrooms, a dedicated office, game room, and media room. Designer details are showcased throughout including a chef-inspired kitchen, custom lighting, built-ins, designer wallpaper, real wood flooring, designer carpet, and an impressive custom designed primary suite closet. The oversized 3-car garage includes additional air-conditioned flex space ideal for storage, a workshop, gym, or hobby area. Outside, enjoy a true backyard retreat with a covered patio and built-in outdoor kitchen, fireplace, large swimming pool with diving board, hot tub, fire pit area, and mature heritage oak trees creating a private park-like setting. This property is perfect for multigenerational living or someone needing an ADU (Accessory Dwelling Unit), Mother-in-law suite, guest house, casita, or a detached area for work purposes.