3509 Saint Croix Avenue Located in the highly sought-after Erwin Farms community in McKinney, this home offers a rare combination of flexible living space, thoughtful upgrades, and a prime location close to everything North McKinney has to offer. One of the standout features is the versatile layout, with the primary suite and its private ensuite bathroom located on the first floor, along with a secondary bedroom positioned next to another full bathroom. This setup provides excellent flexibility for guests, extended family, or anyone who appreciates the convenience of having multiple bedrooms on the main level. Throughout the home, every window is finished with custom plantation shutters, providing a cohesive high-end look while offering excellent privacy and natural light control. The home also includes several valuable improvements that buyers often add after closing. The backyard features a stamped concrete patio creating a great space for relaxing or entertaining, while French drains installed throughout the yard help divert water and improve drainage. A pergola in the backyard is negotiable with an acceptable offer, giving buyers the option to further enhance the outdoor living space. Car enthusiasts, hobbyists, or those simply needing additional storage will appreciate the true three-car garage, complete with epoxy flooring and a generator transfer switch for convenient generator hookup. Beyond the home itself, the location is hard to beat. Erwin Farms is known for its parks, trails, and neighborhood amenities, while also offering quick access to local schools and the rapidly expanding Highway 380 corridor, where shopping, dining, and entertainment options continue to grow. With its functional layout, practical upgrades, and desirable location, this home presents a great opportunity to enjoy everything the Erwin Farms community has to offer.