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Mountain Avenue Office Plaza 222 N Mountain Ave 637 - 4,145 sq ft of Office Space Available in Upland, CA 91786

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HIGHLIGHTS

  • Ample on-site parking for tenants and visitors, providing easy access to your office space in Upland, CA.
  • Conveniently located within walking distance of Mountain Plaza Mall, offering easy access to retail stores and dining options for maximum convenience.
  • Enjoy a serene central courtyard that fills the building with natural light, creating a peaceful atmosphere for tenants and visitors alike.
  • All-inclusive rate covers utilities, building services, and property expenses, offering simplicity and budget predictability for your business.
  • Prime corner location at W 9th St & N Mountain Ave, providing high visibility and maximum exposure for your business in a high-traffic area.
  • Central air and heating provide year-round comfort, maintaining an ideal temperature for a productive and comfortable workspace.

ALL AVAILABLE SPACES(4)

Display Rent as

  • SPACE
  • SIZE
  • TERM
  • RATE
  • USE
  • CONDITION
  • AVAILABLE
  • 1st Floor, Ste 111
  • 855 sq ft
  • Negotiable
  • £15.71 /sq ft pa £1.31 /sq ft pcm £13,431 pa £1,119 pcm
  • Office
  • Full Fit-Out
  • 01/02/2026

Ground-floor corner Suite #111 is approximately 855 square feet and features a welcoming bullpen area, three private offices, and abundant natural light. The suite faces Mountain Ave. and will be available February 1, 2026.

  • Rate includes utilities, building services and property expenses
  • Fits 4 - 6 People
  • 1 Workstation
  • Fully Carpeted
  • Natural Light
  • Fully Fit-Out as Standard Office
  • 3 Private Offices
  • Central Air and Heating
  • Corner Space
  • Wheelchair Accessible
  • 2nd Floor, Ste 203
  • 1,378 sq ft
  • Negotiable
  • £13.37 /sq ft pa £1.11 /sq ft pcm £18,430 pa £1,536 pcm
  • Office
  • Full Fit-Out
  • Now

Suite 203 – This distinctive second-floor corner suite encompasses approximately 1,378 rentable square feet. The layout includes a reception area, open bullpen, three private offices and IT room.

  • Rate includes utilities, building services and property expenses
  • Fits 4 - 12 People
  • 1 Conference Room
  • Central Air and Heating
  • Corner Suite
  • Premium Fit Out
  • Fully Fit-Out as Standard Office
  • 4 Private Offices
  • 1 Workstation
  • Corner Space
  • Lots of Natural Light
  • 2nd Floor, Ste 213-A
  • 637 sq ft
  • Negotiable
  • £13.37 /sq ft pa £1.11 /sq ft pcm £8,520 pa £709.98 pcm
  • Office
  • Full Fit-Out
  • 30 Days

Suite 213-A | 637 RSF: The corner suite features a reception area, and two private offices. Available in 30 days.

  • Rate includes utilities, building services and property expenses
  • Fits 2 - 6 People
  • 1 Workstation
  • Fully Carpeted
  • Fully Fit-Out as Standard Office
  • 2 Private Offices
  • Central Air and Heating
  • Corner Space
  • 2nd Floor, Ste 216-A
  • 1,275 sq ft
  • Negotiable
  • £13.37 /sq ft pa £1.11 /sq ft pcm £17,053 pa £1,421 pcm
  • Office
  • Full Fit-Out
  • Now

Suite 216-A | 1,275 RSF – A versatile office suite with a professional reception area, open bullpen for collaborative work, dedicated conference room, storage, and two private offices. Perfect for growing teams. Available now.

  • Rate includes utilities, building services and property expenses
  • Fits 4 - 8 People
  • 1 Conference Room
  • Central Air Conditioning
  • Professional reception area to welcome clients
  • Private conference room
  • Convenient storage space
  • Fully Fit-Out as Standard Office
  • 2 Private Offices
  • 1 Workstation
  • Fully Carpeted
  • Open bullpen for collaborative work
  • Two private offices
  • Available in 30 days
Space Size Term Rate Space Use Condition Available
1st Floor, Ste 111 855 sq ft Negotiable £15.71 /sq ft pa £1.31 /sq ft pcm £13,431 pa £1,119 pcm Office Full Fit-Out 01/02/2026
2nd Floor, Ste 203 1,378 sq ft Negotiable £13.37 /sq ft pa £1.11 /sq ft pcm £18,430 pa £1,536 pcm Office Full Fit-Out Now
2nd Floor, Ste 213-A 637 sq ft Negotiable £13.37 /sq ft pa £1.11 /sq ft pcm £8,520 pa £709.98 pcm Office Full Fit-Out 30 Days
2nd Floor, Ste 216-A 1,275 sq ft Negotiable £13.37 /sq ft pa £1.11 /sq ft pcm £17,053 pa £1,421 pcm Office Full Fit-Out Now

1st Floor, Ste 111

Size
855 sq ft
Term
Negotiable
Rate
£15.71 /sq ft pa £1.31 /sq ft pcm £13,431 pa £1,119 pcm
Space Use
Office
Condition
Full Fit-Out
Available
01/02/2026

2nd Floor, Ste 203

Size
1,378 sq ft
Term
Negotiable
Rate
£13.37 /sq ft pa £1.11 /sq ft pcm £18,430 pa £1,536 pcm
Space Use
Office
Condition
Full Fit-Out
Available
Now

2nd Floor, Ste 213-A

Size
637 sq ft
Term
Negotiable
Rate
£13.37 /sq ft pa £1.11 /sq ft pcm £8,520 pa £709.98 pcm
Space Use
Office
Condition
Full Fit-Out
Available
30 Days

2nd Floor, Ste 216-A

Size
1,275 sq ft
Term
Negotiable
Rate
£13.37 /sq ft pa £1.11 /sq ft pcm £17,053 pa £1,421 pcm
Space Use
Office
Condition
Full Fit-Out
Available
Now

1st Floor, Ste 111

Size 855 sq ft
Term Negotiable
Rate £15.71 /sq ft pa
Space Use Office
Condition Full Fit-Out
Available 01/02/2026

Ground-floor corner Suite #111 is approximately 855 square feet and features a welcoming bullpen area, three private offices, and abundant natural light. The suite faces Mountain Ave. and will be available February 1, 2026.

  • Rate includes utilities, building services and property expenses
  • Fully Fit-Out as Standard Office
  • Fits 4 - 6 People
  • 3 Private Offices
  • 1 Workstation
  • Central Air and Heating
  • Fully Carpeted
  • Corner Space
  • Natural Light
  • Wheelchair Accessible

2nd Floor, Ste 203

Size 1,378 sq ft
Term Negotiable
Rate £13.37 /sq ft pa
Space Use Office
Condition Full Fit-Out
Available Now

Suite 203 – This distinctive second-floor corner suite encompasses approximately 1,378 rentable square feet. The layout includes a reception area, open bullpen, three private offices and IT room.

  • Rate includes utilities, building services and property expenses
  • Fully Fit-Out as Standard Office
  • Fits 4 - 12 People
  • 4 Private Offices
  • 1 Conference Room
  • 1 Workstation
  • Central Air and Heating
  • Corner Space
  • Corner Suite
  • Lots of Natural Light
  • Premium Fit Out

2nd Floor, Ste 213-A

Size 637 sq ft
Term Negotiable
Rate £13.37 /sq ft pa
Space Use Office
Condition Full Fit-Out
Available 30 Days

Suite 213-A | 637 RSF: The corner suite features a reception area, and two private offices. Available in 30 days.

  • Rate includes utilities, building services and property expenses
  • Fully Fit-Out as Standard Office
  • Fits 2 - 6 People
  • 2 Private Offices
  • 1 Workstation
  • Central Air and Heating
  • Fully Carpeted
  • Corner Space

2nd Floor, Ste 216-A

Size 1,275 sq ft
Term Negotiable
Rate £13.37 /sq ft pa
Space Use Office
Condition Full Fit-Out
Available Now

Suite 216-A | 1,275 RSF – A versatile office suite with a professional reception area, open bullpen for collaborative work, dedicated conference room, storage, and two private offices. Perfect for growing teams. Available now.

  • Rate includes utilities, building services and property expenses
  • Fully Fit-Out as Standard Office
  • Fits 4 - 8 People
  • 2 Private Offices
  • 1 Conference Room
  • 1 Workstation
  • Central Air Conditioning
  • Fully Carpeted
  • Professional reception area to welcome clients
  • Open bullpen for collaborative work
  • Private conference room
  • Two private offices
  • Convenient storage space
  • Available in 30 days

PROPERTY OVERVIEW

Situated at the prime corner of Mountain Avenue and 9th Street, 222 N Mountain Avenue presents an exceptional office space in a tranquil, park-like setting. This meticulously maintained, two-story garden office building boasts a central open-air courtyard, creating a peaceful and welcoming atmosphere for both tenants and visitors. Surrounded by lush, mature landscaping, the property provides a serene work environment, all while offering convenient access to major freeways just minutes away.

  • Atrium
  • Bus Route
  • Courtyard
  • Balcony

PROPERTY FACTS

Property Type
Office
Year Built
1979
Number of Floors
2
Property Size
43,903 sq ft
Costar Property Class
B
Typical Floor Size
21,951 sq ft
Clear Internal Height
12 ft
Parking
220 Surface Parking Spaces
Covered Parking
Walk Score®
Easily Walkable (79)
Bike Score®
Good for cycling (71)
What is a Walk Score®, Transit Score® & Bike Score®?
Walk Score® measures how walkable a location is.
Transit Score® measures access to public transport.
Bike Score® measures how accessible a location is by bike
What is a Walk Score®
, Transit Score® & Bike Score?
Walk Score® measures how walkable
a location is. Transit Score®
measures access to public transport. Bike Score®
measures how accessible a location is by bike®
  • Listing ID: 29863393

  • Date on Market: 27/11/2025

  • Last Updated:

  • Address: 222 N Mountain Ave, Upland, CA 91786

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