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Office For Lease • 568+ SF
| Name | Space Use | Size | Rent | Details |
|---|---|---|---|---|
| 1st Floor Ste 110 | Office | 4,056 SF | $24.00 USD/SF/YR | |
Reception, 7 Private Offices, Open Office, Kitchen
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| 1st Floor Ste 227 | Office | 1,525 SF | $22.80 USD/SF/YR | |
Compact suite with open area and four private offices, ideal for small teams needing a mix of workspace and privacy.
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| 2nd Floor Ste 228 | Office | 1,538 SF | $22.80 USD/SF/YR | |
3 Private Offices, Open Office
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| 2nd Floor Ste 232 | Office | 568 SF | $22.80 USD/SF/YR | |
Reception, 2 Private Offices, Available 10/1/2026
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| 2nd Floor Ste 250 | Office | 1,291 SF | $22.80 USD/SF/YR | |
Open Area, 2 Private Offices
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| 2nd Floor Ste 260-A | Office | 1,600 SF | $22.80 USD/SF/YR | |
Open Area and One Private Office.
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| 3rd Floor Ste 350 | Office | 11,525 SF | $22.80 USD/SF/YR | |
Reception, 8 Private Offices, Open Office, Kitchen, 3 Storage Rooms, Conference Room, Exclusive Atrium.
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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.
| Renovated three-story professional building with rooftop terrace |
| Prime Ontario location near I-10 and major Southern California freeways |
| Ideal for office and medical office users with flexible suite options |
| High ceilings, excellent window line, dual elevators, and ample parking |
| Surrounded by retail and dining amenities near Ontario Mills Mall |
| Commuter Rail | Drive | Walk | Distance |
|---|---|---|---|
| Upland (San Bernardino Line - Southern California Regional Rail Authority (Metrolink)) | 5 min | - | 2.1 mi |
| Montclair (San Bernardino Line - Southern California Regional Rail Authority (Metrolink)) | 6 min | - | 2.3 mi |
| Airport | Drive | Walk | Distance |
| Ontario International | 10 min | - | 5.4 mi |
| John Wayne/Orange County | 49 min | - | 39.4 mi |
| Long Beach (Daugherty Field) | 56 min | - | 43.4 mi |
| Parking Available: | Yes |
| Reserved: | No |
| Spaces Provided: | 250 |
| Type: | Surface |
| Included in Rent: | Yes |
Andrew Peake
Lee & Associates Commercial Real Estate Service
Andrew Peake
Lee & Associates Commercial Real Estate Service
