Renting Storage Units Made Easy

1. Select Storage Unit Size

2. Enter Billing Information

3. Confirm Information

Rent Self Storage Units in Helena, MT

Mountainside Mini Storage offers a wide variety of self-storage unit types and sizes to meet any requirements you might need. We know that finding and renting a storage unit can be daunting which is why we make sure to maintain a clean, secure & most of all-affordable storage facility. Feel free to call us anytime for your unit or simply rent your self-storage unit below!


10X5 (10 x 5 x 8.5)

It fits the contents of a one full bedroom, including small to medium-sized boxes.

$50 / month

10X5 (10 x 5 x 8.5)

It fits the contents of a one full bedroom, including small to medium-sized boxes.


1 Month for
$50.00

$50.00 / month

$25

The Reservation Deposit is the deposit amount needed to reserve a unit and the full amount will be credited back on the first rental invoice.

10X10 (10 x 10 x 8.5)

It fits the contents of two full bedrooms, including several small to medium-sized boxes, and items such as mattress sets, sofas, chests of drawers, bookcases, and desks.

$65 / month

10X10 (10 x 10 x 8.5)

It fits the contents of two full bedrooms, including several small to medium-sized boxes, and items such as mattress sets, sofas, chests of drawers, bookcases, and desks.


1 Month for
$65.00

$65.00 / month

$25

The Reservation Deposit is the deposit amount needed to reserve a unit and the full amount will be credited back on the first rental invoice.

10X15 (10 x 15 x 8.5)

It fits the contents of an entire family room including several small to medium-sized boxes, and items such as mattress sets, sofas, chests of drawers, bookcases, and desks.

$75 / month

10X15 (10 x 15 x 8.5)

It fits the contents of an entire family room including several small to medium-sized boxes, and items such as mattress sets, sofas, chests of drawers, bookcases, and desks.


1 Month for
$75.00

$75.00 / month

$25

The Reservation Deposit is the deposit amount needed to reserve a unit and the full amount will be credited back on the first rental invoice.

10X20 (10 x 20 x 8.5)

It fits the contents of an entire family room and two full bedrooms, including several small to medium-sized boxes.

$99 / month

10X20 (10 x 20 x 8.5)

It fits the contents of an entire family room and two full bedrooms, including several small to medium-sized boxes.


1 Month for
$99.00

$99.00 / month

$25

The Reservation Deposit is the deposit amount needed to reserve a unit and the full amount will be credited back on the first rental invoice.

10X25 (10 x 25 x 8.5)

It fits the contents of a fully furnished 3 bedroom house, including oversized items such as a couch, mattress sets, a dresser, a refrigerator, a washer/dryer, a dining room set, an entertainment center and several large boxes.

$130 / month

Waiting List

10X25 (10 x 25 x 8.5)

It fits the contents of a fully furnished 3 bedroom house, including oversized items such as a couch, mattress sets, a dresser, a refrigerator, a washer/dryer, a dining room set, an entertainment center and several large boxes.


1 Month for
$130.00

$130.00 / month

$25

The Reservation Deposit is the deposit amount needed to reserve a unit and the full amount will be credited back on the first rental invoice.

10X30 (10 x 30 x 8.5)

It fits the contents of a multi-bedroom house, including several oversized items like a couch, a refrigerator, a washer/dryer, and a dining room set or several large boxes.

$150 / month

10X30 (10 x 30 x 8.5)

It fits the contents of a multi-bedroom house, including several oversized items like a couch, a refrigerator, a washer/dryer, and a dining room set or several large boxes.


1 Month for
$150.00

$150.00 / month

$25

The Reservation Deposit is the deposit amount needed to reserve a unit and the full amount will be credited back on the first rental invoice.

Why Rent Self Storage Units From Mountainside Mini Storage?

Customer Service

We are dedicated to customer service. We are committed to offering you exceptional value for your hard earned money. We strive to ensure an amazing experience renting storage.

Rent and Pay Online

Our website is easy to use and has all the features for a rich interactive experience. We make renting self storage units easy and hassle free!