Welcome to 657 Gemstone Drive, San Marcos a beautifully upgraded home in the highly sought-after Rancho Tesoro community! This spacious Model Vientos Plan 1R offers 2,458 sq ft of thoughtfully designed living space and boasts a seamless blend of luxury and comfort. The open-concept floor plan features 4 bedrooms (including one bedroom and full bath on the main level), 3 bathrooms, and a versatile upstairs loft perfect as a bonus room or office. Step inside to find stunning custom upgrades throughout, including a bright, modern kitchen with shaker-style vinyl cabinets, designer tile backsplash, and premium finishes. The grand entry showcases 9-foot ceilings, leading to indoor/outdoor living spaces ideal for entertaining. Upstairs, the expansive master retreat offers a peaceful escape, complemented by a large laundry room and generously sized bedrooms. Additional highlights include upgraded custom flooring, Lutron smart lighting, and a fully landscaped backyard with turf for easy maintenance and plenty of space to relax or host guests. All appliances including washer and dryer are included with the home. Rancho Tesoro offers resort-style amenities such as a pool with cabanas, BBQ areas, firepits, three parks, and a playground. Enjoy breathtaking mountain views and the convenience of being minutes from the 78 freeway, all within a top-rated school district. Low HOA and Mello-Roos fees make this an exceptional opportunity to own in one of San Marcos’ premier communities. Don’t miss it!