Custom atrium ranch on 3.65 acres in Lake St. Louis! This energy-efficient home is built with 2x6 construction, new Anderson windows, LED lighting throughout, geothermal heating & cooling (WaterFurnace Series 7 variable speed), and a 20.2 kW solar array for incredible cost savings. The open-concept main level features a fully remodeled bathroom, gourmet kitchen with custom cabinetry, granite countertops, high-end appliances, hands-free faucet, and a large center island that flows into the breakfast room and covered deck. The living room boasts floor-to-ceiling windows, motorized Zebra shades, and a wood-burning fireplace, with a formal dining room and main-floor office adding function and style. Two luxurious primary suites—one on each level—each include spa-like bathrooms, with the lower level offering a heated bathroom floor. The finished lower level also includes a full 2nd kitchen, large family room, optional gym/4th bedroom, oversized windows for natural light and ample storage space. Smart home features include Google Home integration, a central automation hub, and whole-house water filtration. Step outside to your private backyard oasis with patio, hot tub, and landscaped yard. Additional highlights: 3-car garage with Tesla charging station, storage shed, and outlets under the eaves for holiday lights. Cleared, level lot offers endless possibilities—pool, sports, or entertaining space. Luxury, efficiency, and thoughtful design all in one!