1409 Washington Avenue – Historic Downtown St. Louis Office Building for Sale Prime Investment Opportunity | 10% Cap Rate | Rare Onsite Parking | Seller Financing Available Positioned in the heart of the Washington Avenue Loft District, 1409 Washington Avenue presents a rare chance to acquire a five-story historic office building with strong in-place income and substantial upside potential. The property features two ground-floor retail spaces and 72 small office suites on floors two through five, all elevator-served and supported by 21 onsite parking spaces — an exceptionally valuable amenity in Downtown St. Louis. In addition to tenant convenience, the parking lot itself offers significant income potential, especially during nearby events and peak downtown hours. Based on last year’s P&L, the building operates at a 10% capitalization rate, providing solid existing cash flow. Competing office suite and coworking spaces nearby are achieving nearly double the current rents, revealing a clear opportunity to rebrand and reposition the property as a modern coworking destination. While the building currently lacks shared amenities, future ownership could enhance market appeal and rents by adding common-area features typical of successful coworking brands — such as shared conference rooms, lounge areas, phone booths, and event or collaboration spaces. As a historic structure, the building may also qualify for Missouri and Federal Historic Tax Credits if improvements or a conversion project are undertaken. The seller is open to providing seller financing, offering flexibility for qualified investors or developers. Surrounded by residential lofts, hotels, restaurants, and nightlife, the property is within walking distance of CITYPARK Stadium, Busch Stadium, and Enterprise Center, placing it at the center of downtown’s revitalization corridor and long-term growth trajectory.