Positioned within the highly desirable Concours Plaza business park, 3333 Concours St., Building 4 presents a rare opportunity to acquire a high-image, two-story professional office building in the heart of Ontario's thriving Airport Area submarket. Constructed in 2005, the property features modern architectural design, quality interior build-out, and abundant natural light, creating an ideal environment for professional office, medical, or owner-user occupancy. The building offers a flexible layout with private offices, conference areas, and support space, making it suitable for a wide range of users. Strategically located just west of Haven Avenue, the property provides immediate access to the I-10, I-15, and 210 freeways, and is within minutes of Ontario International Airport, major business hubs, hotels, and retail amenities. This prime location supports both long-term investment stability and strong user demand. With its combination of institutional-quality design, excellent accessibility, and premier business park setting, this asset represents an exceptional opportunity for investors and owner-users seeking a presence in one of the Inland Empire's most dynamic commercial corridors.