Stewart Plaza
400 N Mountain Ave, Upland, CA 91786
13,697
SF AvailableRental Details
- Number of spaces 10
- Total square feet available 13,697 SF
- For Lease Contact for pricing
- Space Types General Office
- Lease Type Full Service, Modified Gross
- Date Updated Feb 2, 2026
Reach out to the broker for more info on lease terms and amenities
True
For Lease 10 Spaces Available
101 |
Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Executive Suites Available as well Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
211 |
Reception, 3 Offices, Balcony Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Executive Suites Available as well Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
215 |
Reception, 3 Offices, Balcony Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Executive Suites Available as well Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
229 |
Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Executive Suites Available as well Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
230 |
Executive Suite Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
231 |
Executive Suite
Brian Melkesian
Lee & Associates |
233 |
Professional Medical/Office Environment, Built Out Offices for Immediate Occupancy, Close Proximity to I-15, I-10 & CA-210 Freeways, Possible Building Signage
Brian Melkesian
Lee & Associates |
234 |
professional/medical office environment, built-out offices for immediate occupancy, close proximity to I-15, I-10 & I-210 freeways, located in close proximity to many retail amenities, elevator served, possible building signage
Brian Melkesian
Lee & Associates |
249 |
Executive Suite Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
300 |
Reception, 4 Offices, Break Area Elevator Served Ideal For Office + Medical Uses Heavy Parking with Easy Access Executive Suites Available as well Surrounded by Many Retail Amenities In Close Proximity to 10 & 210 Freeways
Brian Melkesian
Lee & Associates |
Contacts
Lee & Associates
Building Details
- For Lease Contact for pricing
- Property Type Office - General Office
- Property Size 41,732 SF
- Lot Size 3.96 Acre
- Parking Spaces Avail. 167
- Parking Ratio 4.00 / 1,000 SF
- Property Tenancy Multi-Tenant
- Building Class B
- Year Built 1987
- Date Updated Feb 2, 2026
Getting Around
-
Walk Score ®
Very Walkable (73) -
Transit Score ®
Some Transit (28) -
Bike Score ®
Bikeable (69)
Location
- City Upland, CA
- Zip Code 91786
- Market Inland Empire
Points of Interest
Claremont
2.78 miles
Pomona–North
4.82 miles
Rancho Cucamonga
6.23 miles
East Ontario
6.49 miles
Pacific Electric - Etiwanda Station
8.51 miles
Chevron
0.57 miles
Shell
0.62 miles
USA Gasoline
0.76 miles
eVgo
0.80 miles
76
0.96 miles
Vons 2681 Fuel Station
1.04 miles
Upland Village Center
1.36 miles
Valero
1.56 miles
Costco Gasoline
1.58 miles
North/Sophomore Parking Lot
0.82 miles
Montclair Transcenter Park And Ride
1.51 miles
SARH Employee Parking
1.68 miles
East Mesa Parking
2.05 miles
Holden Parking
2.11 miles
Sanborn Parking
2.23 miles
Claremont Wilderness Park South Parking
3.57 miles
Avis
0.14 miles
E-Z Clean Car Wash
0.17 miles
Prime Wash Express
0.69 miles
Pacific Car Wash
0.99 miles
Enterprise
1.01 miles
Squeaky Clean
1.21 miles
Route 66 Car Wash
1.37 miles
Hertz
1.39 miles
Mission Car Wash
1.90 miles
Miss Donuts & Boba
0.14 miles
EZ Burger & Grill
0.17 miles
Petrilli's Pizza
0.31 miles
Kedai
0.32 miles
Upland Kabob Restaurant
0.32 miles
Poki & Maki
0.32 miles
Wingstop
0.32 miles
The Flame Broiler
0.32 miles
Panda Express
0.35 miles
Stater Bros.
0.50 miles
Big Lots
0.58 miles
ALDI
0.63 miles
Smart & Final
0.65 miles
Sprouts Farmers Market
0.77 miles
Walmart
0.78 miles
Marshalls
1.00 miles
Vons
1.11 miles
Walmart Supercenter
1.12 miles
Passport Health Upland Travel Clinic
0.37 miles
Sun Coast West Medical Clinic
0.64 miles
Conscious Behavioral Health
0.69 miles
The Medicine Shoppe
0.90 miles
Upland/Ontario Health Clinic
0.90 miles
Four Seasons Surgery Centers
0.98 miles
Upland Police Department
1.02 miles
CareMore Health
1.05 miles
UPLAND STATION #161
1.12 miles
400 N Mountain Ave Listing Summary
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Office Space Available at 400 N Mountain Ave
Office space currently available at 400 N Mountain Ave adds up to a total of 13,697 square feet across 10 listing(s). The largest individual space listed offers 5,974 square feet. Property use types available for lease at this property include: general office.
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Learn More about 400 N Mountain Ave
400 N Mountain Ave is located in the Inland Empire market and pertains to the 91786 zip code. The property incorporates a total of 13,697 square feet of space. 400 N Mountain Ave features a parking ratio of 4.00 / 1,000 SF, offering a total of 167 parking spaces. 400 N Mountain Ave was built in 1987.
Interested in researching more about this property? Access in-depth research on 400 N Mountain Ave, including ownership details, transaction history, property characteristics, taxes, mortgage data, violations and more by creating a free account and viewing the full property report.
Lee & Associates
