Sixth Street Center offers a premier office environment in the heart of Ontario’s desirable commercial corridor. This renovated three-story building stands out as the only property of its size in the area, featuring a distinctive fourth-floor penthouse and rooftop terrace that elevate its appeal. Tenants benefit from high ceilings, abundant natural light through an excellent window line, and dual elevators for convenience. The property provides ample parking and is strategically positioned immediately south of the I-10 Freeway at Mountain Avenue, ensuring seamless connectivity to major routes including the 15, 57, 60, and 210 Freeways. Located near Ontario Mills Mall and Montclair Plaza, the building is surrounded by retail, dining, and service amenities, creating a vibrant work-life balance for occupants. Its central location between Los Angeles, Orange, Riverside, and San Bernardino counties makes it an ideal hub for businesses seeking regional accessibility. Sixth Street Center is perfectly suited for professional office and medical office users looking for a modern, functional space in a high-demand market.