3333 Concours St., Building 4 presents a compelling opportunity to acquire a ±11,628 SF two-story professional office building in the prestigious Concours Plaza within Ontario's highly desirable Airport Area. Newly reduced to $4,250,000 (approximately $366/SF), the property offers approximately 1,687 SF currently vacant and available for immediate owner-user occupancy, while the balance of the building provides existing rental income to help offset ownership costs. For buyers requiring additional space, ownership may consider opportunities to accommodate additional owner-user occupancy, subject to existing tenant lease terms and availability. The property is well suited for medical groups, healthcare providers, attorneys, accounting firms, insurance companies, financial services, engineering firms, and other professional users seeking the benefits of building ownership while maintaining an existing income stream. Conveniently located near Ontario International Airport with excellent access to I-10, I-15 and major Inland Empire business and employment centers.