For sale by managing broker-owner. Prime investment opportunity. Class A masonry office building ideally situated in the heart of downtown Sterling, Illinois—approximately 100 miles west of Chicago and 45 miles east of the Quad Cities. Known for its striking architectural design, this property is one of the most aesthetically pleasing office buildings in the region and beyond. The building has undergone extensive recent renovations, including a brand-new roof, updated ADA-compliant restrooms, and improvements to the parking lot, ensuring modern functionality and convenience. Conveniently located, the property is in close proximity to key local amenities, including the Sterling Police Department, City Hall, the U.S. Post Office, and the Whiteside County Courthouse. The building also benefits from being surrounded by a variety of restaurants, retail establishments, and other government buildings, enhancing its appeal for both tenants and visitors alike. Currently, the building is home to WIPFLI, LLP, a prominent national CPA and consulting firm that employs over 3,000 people and ranks among the top 20 accounting firms in the United States. With WIPFLI as a high-credit tenant, the building enjoys stable occupancy and a strong, reliable income stream. The property has maintained 100% occupancy since its completion in 1992, offering a secure investment opportunity. This property presents a rare opportunity to own a prestigious, well-maintained office building in a highly desirable location.