12 W Garfield Avenue Now registered with the county and ready to build! Los Rios Subdivision is a brand-new residential community located off S. Trosper Blvd in Alton. This subdivision features 23 spacious lots with no HOA and flexible building guidelines. Each lot requires a minimum of 1, 300 sq ft of living area, with homes built using brick, stone, or stucco exteriors. Situated in a rapidly growing area, Los Rios offers convenient access to major roads, schools, and everyday amenities. It’s an excellent opportunity for builders or buyers looking for affordability, location, and long term value. Secure your lot today in one of Alton’s most promising new neighborhoods!