Prime Turnkey Opportunity: Fully Renovated Multi-Family Property in Historic St. Charles. Unlock incredible investment value with this exceptional 11,280 square foot multi-family property situated on a spacious 0.46-acre lot at 840 Spring Ave. Perfectly tailored for savvy investors seeking strong, stable rental yields, the building features fully renovated 1-bedroom, 1-bathroom apartment units designed to meet modern tenant demands. Each updated space boasts contemporary hardwood flooring, central air conditioning, and a private patio, alongside the crucial daily conveniences of on-site shared laundry facilities and dedicated off-street parking. Tucked away on a remar...kably quiet, pet-friendly street, this asset is built to minimize vacancies and maximize long-term cash flow. Location is everything, and this property delivers an unbeatable geographic advantage with exceptional walkability in the heart of Saint Charles. Tenants can comfortably walk to local grocery stores, vibrant restaurants, popular neighborhood bars, and the campus of Lindenwood University, ensuring a steady, built-in demographic of student and faculty renters. Residents are also just minutes from the historic charm, boutique shopping, and riverside dining of the Historic Main Street and Frenchtown Districts. With quick access to major commuter corridors and the Boeing employment hub, this high-demand location guarantees enduring appeal and consistent renter interest.