Self Storage Units in Ontario, CA

Mountain Avenue Self Storage at 630 South Mountain Avenue

Office Hours
OFFICE HOURS9:00 AM - 6:00 PM
Gate Hours
DRIVE UP UNITS6:00 AM - 9:00 PM
HALLWAY UNITS(BESIDE MAJOR HOLIDAYS)9:00 AM - 5:45 PM
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Find a Storage Unit Now

Our self storage units are ideal for local residents and businesses. Choose better storage today from Mountain Avenue Self Storage!

Online Payments

Clean and Safe

Live-In Manager

Family Owned and Operated

Security Cameras

Pest Control

Excellent Customer Service

Well-Lit Facility

Storage Units at S Mountain Ave & Mission

Self storage units located next to the Subway on S Mountain Ave

Our self storage units at Mountain Avenue Self Storage are available in a variety of sizes at fair monthly rates. We rent month-to-month, so you don’t need to guess at how long you’ll need your storage unit upfront. 

Our on-site management is local to the Ontario, California, area. This means that our experts are familiar with the area, familiar with our community, and familiar with your self storage needs.

We have both drive-up access and indoor self storage units as needed by our customers. No matter what your storage needs call for, we’re confident we can help! 

Browse our available self storage units online now and start renting with ease today.

Our Storage Units in Ontario, California

Find the storage units you deserve right here in Ontario

Indoor Storage Units

These storage units feature indoor access, allowing you to stay out of the elements while working at your unit. Whether you’re moving items in or searching for something you boxed up, stay out of the rain and sun!

Drive-Up Storage Units

Drive-up units allow for the easiest loading and unloading of items. In addition to the convenience of moving your items in or out, these units also feature longer access hours.

Month-to-Month Rentals

Not sure how long you’re going to need your storage unit? We get it. Renovations can stretch on. You may not get through the waiting list at that new apartment for months. That’s okay; we’ve got you covered.

Commercial Storage Solutions in Ontario

Trust us to help you solve your storage problems

Whether you’re a local resident or a local business, we’re confident in our ability to find what you need for your storage problems. 

Our storage units are ideal space solutions for businesses. 

Stack our monthly rates per square foot up against other commercial space options, and we’re sure you’ll see the value! 

Rent our storage units online and solve your need for inventory or equipment storage in no time.

Ontario Self Storage Questions & Answers

Find the answers you need before storing your items

Our storage facility at 630 S Mountain Ave is perfectly suited for your storage needs. We know you may have some questions about self storage or our storage units, and we’re happy to help. Here are some frequently asked questions we’ve assembled to get you started.

Where can I find storage units in Ontario?

Mountain Avenue Self Storage offers a variety of storage units right here in Ontario near W Mission Blvd.

How much does a storage unit cost at Mountain Avenue Self Storage?

Our storage units range in size and amenities, and the price will vary as a result. Check out our available units right here to find the monthly rate for what you need.

Can you help me move into my storage unit?

Moving in is easy at Mountain Avenue Self Storage! We offer free moving carts to help you move your heavy items, and you can rent a drive-up unit to make it even more convenient.

What areas does your facility serve?

We serve a variety of communities around our facility, including Ontario, Narod, Montclair, and more!

Do you offer any regular specials for military personnel?

Military, police, and firefighters get 10% off storage units at our facilities.