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Stewart Plaza 400 N Mountain Ave 230 - 14,047 SF of Space Available in Upland, CA 91786
Highlights
- Elevator-served building with flexible office and medical layouts
- Convenient location near 10 and 210 Freeways for regional connectivity
- Executive suites available for turnkey occupancy
- Heavy parking and easy access for staff and visitors
- Surrounded by retail amenities for added convenience
All Available Spaces(11)
Display Rental Rate as
- Space
- Size
- Term
- Rental Rate
- Space Use
- Condition
- Available
Shell space available. Ideal For Office + Medical Uses. Surrounded by Many Retail Amenities. Executive Suites Available as well.
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 5,974 SF of adjacent space
Shell space available. Ideal For Office + Medical Uses. Surrounded by Many Retail Amenities. Executive Suites Available as well.
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 5,974 SF of adjacent space
2 Offices, Bullpen
- Rate includes utilities, building services and property expenses
- 3 Private Offices
- Fully Built-Out as Standard Office
3 Offices, Bullpen
- Rate includes utilities, building services and property expenses
- 3 Private Offices
- Fully Built-Out as Standard Office
Executive Suite
- Rate includes utilities, building services and property expenses
- 1 Private Office
- Partially Built-Out as Standard Office
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
Executive Suite
- Rate includes utilities, building services and property expenses
- 1 Private Office
- Partially Built-Out as Standard Office
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
Executive Suite
- Rate includes utilities, building services and property expenses
- 1 Private Office
- Partially Built-Out as Standard Office
- Rate includes utilities, building services and property expenses
- Office intensive layout
- Fully Built-Out as Standard Office
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
- Rate includes utilities, building services and property expenses
- Office intensive layout
- Fully Built-Out as Standard Office
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
Executive Suite
- Rate includes utilities, building services and property expenses
- 3 Private Offices
- Fully Built-Out as Standard Office
Built-out medical space available. Reception, 5 Exam Rooms, Lab, Breakroom, Nurses Station, Doctor's Office. Elevator Served. Surrounded by Many Retail Amenities. Executive Suites Available as well.
- Rate includes utilities, building services and property expenses
- 7 Private Offices
- Fully Built-Out as Standard Medical Space
| Space | Size | Term | Rental Rate | Space Use | Condition | Available |
| 1st Floor, Ste 101 | 2,800 SF | Negotiable | $44.85 CAD/SF/YR $3.74 CAD/SF/MO $125,572 CAD/YR $10,464 CAD/MO | Office/Medical | Shell Space | Now |
| 1st Floor, Ste 104 | 3,174 SF | Negotiable | $44.85 CAD/SF/YR $3.74 CAD/SF/MO $142,344 CAD/YR $11,862 CAD/MO | Office/Medical | Shell Space | Now |
| 2nd Floor, Ste 211 | 1,595 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $65,028 CAD/YR $5,419 CAD/MO | Office | Full Build-Out | Now |
| 2nd Floor, Ste 215 | 1,815 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $73,998 CAD/YR $6,166 CAD/MO | Office | Full Build-Out | 30 Days |
| 2nd Floor, Ste 229 | 257 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO | Office | Partial Build-Out | Now |
| 2nd Floor, Ste 230 | 257 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO | Office | Partial Build-Out | Now |
| 2nd Floor, Ste 231 | 230 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $9,377 CAD/YR $781.42 CAD/MO | Office | Partial Build-Out | Now |
| 2nd Floor, Ste 233 | 257 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO | Office | Full Build-Out | Now |
| 2nd Floor, Ste 234 | 257 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO | Office | Full Build-Out | Now |
| 2nd Floor, Ste 249 | 555 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $22,627 CAD/YR $1,886 CAD/MO | Office | Full Build-Out | 30 Days |
| 3rd Floor, Ste 300 | 2,850 SF | Negotiable | $40.77 CAD/SF/YR $3.40 CAD/SF/MO $116,194 CAD/YR $9,683 CAD/MO | Office/Medical | Full Build-Out | Now |
1st Floor, Ste 101
| Size |
| 2,800 SF |
| Term |
| Negotiable |
| Rental Rate |
| $44.85 CAD/SF/YR $3.74 CAD/SF/MO $125,572 CAD/YR $10,464 CAD/MO |
| Space Use |
| Office/Medical |
| Condition |
| Shell Space |
| Available |
| Now |
1st Floor, Ste 104
| Size |
| 3,174 SF |
| Term |
| Negotiable |
| Rental Rate |
| $44.85 CAD/SF/YR $3.74 CAD/SF/MO $142,344 CAD/YR $11,862 CAD/MO |
| Space Use |
| Office/Medical |
| Condition |
| Shell Space |
| Available |
| Now |
2nd Floor, Ste 211
| Size |
| 1,595 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $65,028 CAD/YR $5,419 CAD/MO |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| Now |
2nd Floor, Ste 215
| Size |
| 1,815 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $73,998 CAD/YR $6,166 CAD/MO |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| 30 Days |
2nd Floor, Ste 229
| Size |
| 257 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO |
| Space Use |
| Office |
| Condition |
| Partial Build-Out |
| Available |
| Now |
2nd Floor, Ste 230
| Size |
| 257 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO |
| Space Use |
| Office |
| Condition |
| Partial Build-Out |
| Available |
| Now |
2nd Floor, Ste 231
| Size |
| 230 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $9,377 CAD/YR $781.42 CAD/MO |
| Space Use |
| Office |
| Condition |
| Partial Build-Out |
| Available |
| Now |
2nd Floor, Ste 233
| Size |
| 257 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| Now |
2nd Floor, Ste 234
| Size |
| 257 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $10,478 CAD/YR $873.16 CAD/MO |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| Now |
2nd Floor, Ste 249
| Size |
| 555 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $22,627 CAD/YR $1,886 CAD/MO |
| Space Use |
| Office |
| Condition |
| Full Build-Out |
| Available |
| 30 Days |
3rd Floor, Ste 300
| Size |
| 2,850 SF |
| Term |
| Negotiable |
| Rental Rate |
| $40.77 CAD/SF/YR $3.40 CAD/SF/MO $116,194 CAD/YR $9,683 CAD/MO |
| Space Use |
| Office/Medical |
| Condition |
| Full Build-Out |
| Available |
| Now |
1 of 1
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Matterport 3D Tour
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Street View
Street
Map
1st Floor, Ste 101
| Size | 2,800 SF |
| Term | Negotiable |
| Rental Rate | $44.85 CAD/SF/YR |
| Space Use | Office/Medical |
| Condition | Shell Space |
| Available | Now |
Shell space available. Ideal For Office + Medical Uses. Surrounded by Many Retail Amenities. Executive Suites Available as well.
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 5,974 SF of adjacent space
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
1st Floor, Ste 104
| Size | 3,174 SF |
| Term | Negotiable |
| Rental Rate | $44.85 CAD/SF/YR |
| Space Use | Office/Medical |
| Condition | Shell Space |
| Available | Now |
Shell space available. Ideal For Office + Medical Uses. Surrounded by Many Retail Amenities. Executive Suites Available as well.
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 5,974 SF of adjacent space
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 211
| Size | 1,595 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | Now |
2 Offices, Bullpen
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- 3 Private Offices
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 215
| Size | 1,815 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | 30 Days |
3 Offices, Bullpen
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- 3 Private Offices
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 229
| Size | 257 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Partial Build-Out |
| Available | Now |
Executive Suite
- Rate includes utilities, building services and property expenses
- Partially Built-Out as Standard Office
- 1 Private Office
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 230
| Size | 257 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Partial Build-Out |
| Available | Now |
Executive Suite
- Rate includes utilities, building services and property expenses
- Partially Built-Out as Standard Office
- 1 Private Office
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 231
| Size | 230 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Partial Build-Out |
| Available | Now |
Executive Suite
- Rate includes utilities, building services and property expenses
- Partially Built-Out as Standard Office
- 1 Private Office
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 233
| Size | 257 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | Now |
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- Office intensive layout
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 234
| Size | 257 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | Now |
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- Office intensive layout
- Can be combined with additional space(s) for up to 1,028 SF of adjacent space
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
2nd Floor, Ste 249
| Size | 555 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office |
| Condition | Full Build-Out |
| Available | 30 Days |
Executive Suite
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Office
- 3 Private Offices
1 of 1
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
3rd Floor, Ste 300
| Size | 2,850 SF |
| Term | Negotiable |
| Rental Rate | $40.77 CAD/SF/YR |
| Space Use | Office/Medical |
| Condition | Full Build-Out |
| Available | Now |
Built-out medical space available. Reception, 5 Exam Rooms, Lab, Breakroom, Nurses Station, Doctor's Office. Elevator Served. Surrounded by Many Retail Amenities. Executive Suites Available as well.
- Rate includes utilities, building services and property expenses
- Fully Built-Out as Standard Medical Space
- 7 Private Offices
Property Overview
Stewart Plaza offers a prime office and medical environment in the heart of Upland, CA. This professionally managed property features elevator service, abundant parking, and flexible suite sizes ranging from compact executive offices to expansive medical layouts. Tenants benefit from proximity to major transportation corridors, including the 10 and 210 Freeways, ensuring seamless regional connectivity. The surrounding area is rich with retail amenities, creating a convenient and vibrant setting for employees and clients alike. Medical professionals will appreciate suites designed with exam rooms, labs, and nurse stations, while traditional office users can select spaces with reception areas, private offices, and collaborative bullpens. Executive suites are also available for businesses seeking a turnkey solution. The property’s strategic location near Montclair, Ontario, and Claremont positions tenants within a dynamic Inland Empire market known for strong demographics and growth potential.
- Atrium
- Signage
Property Facts
Building Type
Office
Year Built/Renovated
1987/2021
Building Height
3 Stories
Building Size
47,850 SF
Building Class
B
Typical Floor Size
15,950 SF
Unfinished Ceiling Height
12’
Parking
140 Surface Parking Spaces
Surface Tandem Parking
Covered Parking
Covered Tandem Parking
Reserved Parking
Walk Score®
Very Walkable (76)
Contacts
-
Brian Melkesian -
Luke Melkesian -
Lee & Associates Commercial Real Estate Services
1 of 8
Videos
Matterport 3D Exterior
Matterport 3D Tour
Photos
Street View
Street
Map
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Stewart Plaza | 400 N Mountain Ave
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