Rarely does a property offer this level of flexibility, privacy, and usable land in the heart of Round Rock. Situated on just over one acre across two separate lots, this extensively updated property features a beautifully renovated main home plus a fully permitted guest house with its own address, separate utilities, private driveway, and climate-controlled garage - ideal for multigenerational living, guests, or a home-based business. The 2,382-square-foot main home has been thoughtfully updated with smooth ceilings, luxury vinyl plank and tile flooring, fresh interior and exterior paint, replacement windows and doors, updated lighting, and modern finishes throughout. The spacious living room with a brick fireplace flows into the dining area and updated kitchen featuring granite countertops, abundant cabinetry, a double oven, and newer stainless steel appliances. A dedicated office offers work-from-home flexibility, while the oversized primary suite includes a remodeled walk-in shower, brand-new dual-sink vanity, and generous closet space. Outside, mature oak trees shade an expansive backyard and covered patio complete with a misting system and solar lighting. The approximately 504-square-foot guest house sits on its own separately addressed lot and features one bedroom, one-and-a-half baths, a full kitchen, vaulted wood ceilings, covered porch, and fenced yard. A separate four-car driveway, independent utilities, RV hookup with water and sewer dump, and a 656-square-foot climate-controlled garage/workshop add exceptional versatility. Additional improvements include updated HVAC with UV air purification, water softener, whole-home security system with cameras, remodeled primary bath, and newer flooring, paint, lighting, and appliances. Just minutes from HEB, Dell, Kalahari Resort, Old Settlers Park, Round Rock Premium Outlets, and I-35, this one-of-a-kind property offers the rare combination of space, flexibility, and everyday convenience.