718 Arch Street 718 Arch St in Ottawa, IL offers a unique multi-unit investment opportunity with four total units split between two separate buildings, plus a spacious 4-car detached garage. Each building contains two units, providing flexibility for rental income or owner occupancy. The layout allows for multiple income streams and reduced vacancy risk, making it an excellent choice for investors seeking strong cash flow potential. Conveniently located near local amenities and major routes, this property combines functionality, versatility, and long-term earning potential in one attractive package.