Your search satisfies here — 4201 Arques Avenue: https://show.tours/4201arquesave; Located in the highly desirable Highlands at Mayfield Ranch, this 2021 Sitterle Heritage Premier Series home—still under a 10-year builder warranty— sits on a premium corner lot and features a rare private casita, a layout seldom available in this community. This beautifully upgraded 4-bedroom, 3-bath residence is ideal for those seeking single-story luxury with flexible living. Just off the front entrance, beyond a charming rose garden and courtyard, the detached casita offers its own entrance, full bath, and walk-in closet—perfect for guests, extended family, a home office, or rental income. The home welcomes you with lush, mature landscaping maintained by the HOA front and back, creating a serene, polished setting. Inside, over $90K in documented owner upgrades shine throughout: chef’s kitchen with modern appliances, granite countertops, breakfast bar, elite water filtration system, wine refrigerator, and included washer/dryer. The main living area is light-filled with soaring ceilings, oversized windows with motorized blinds, maple hardwood floors, and a dramatic 12-foot marble fireplace. Elegant French doors open to a flexible room ideal for a home office, formal dining, or optional bedroom. The primary suite is a true retreat with backyard views, a spa-inspired bath featuring Interceramic rainforest tile, and a sunlit walk-in closet with skylight. Outside, enjoy a fully fenced private garden oasis. Minutes from Dell, Apple, Samsung, and Tesla, with easy access to Round Rock Premium Outlets, Old Settlers Park, and local trails. Zoned to top-rated Wolf Ranch Elementary, Tippit Middle, and East View High. Single-story casita homes—especially those still under warranty—don’t last. Schedule your private showing today.