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Reserve Your Storage Unit in Helena, MT – RV, Boat & More

Find the Right Storage Space in Helena – Book Your Unit Now

We offer a wide variety of storage unit types and sizes to meet any requirements you might need, from simple self-storage to boat and RV. We take pride in making sure our storage units are clean, secure, and affordable, providing you with the peace-of-mind you deserve. Feel free to call us anytime for your unit or simply rent your storage unit below!

10% discount for active military, law enforcement, fire department, EMS. 
Thank you for your service!

5 x 10

A 5x10 unit offers roughly 50 square feet of space, perfect for small furniture, boxes, and seasonal items. Think of it as an extra walk-in closet — big enough for a dresser, a few chairs, and about a dozen boxes. It’s a great choice if you’re cleaning out a spare room, storing college furniture, or keeping outdoor gear and tools out of the way.

$50 / month

10 x 10

At 100 square feet, a 10x10 unit is one of the most popular sizes. It can comfortably hold the contents of a one-bedroom apartment — a couch, mattress set, dining table, appliances, and plenty of boxes. If you’re moving or downsizing, this size gives you the flexibility to store furniture without feeling cramped.

$70 / month

10 x 15

A 10x15 unit has enough room for the contents of a small two-bedroom home. It’s ideal for storing larger pieces like sectionals, bedroom sets, or appliances, with room left over for boxes and bikes. This size is also a good fit for small business owners who need extra storage for inventory or equipment.

$80 / month

10 x 20

A 10x20 unit offers 200 square feet — enough space for a small household’s belongings or a full-size vehicle. Picture fitting a living room set, multiple bedroom sets, and large appliances all in one place. This is a popular option for families between homes or anyone looking to store a car, boat, or trailer securely indoors.

$95 / month

10 x 25

With 250 square feet, a 10x25 unit can handle the contents of a three- or four-bedroom house. You could store large furniture, multiple appliances, outdoor gear, or even a vehicle alongside household items. It’s a great choice if you’re doing a home renovation, managing an estate, or just need room to grow.

$110 / month

10 x 30

A 10x30 unit gives you a generous 300 square feet — about the size of a two-car garage. It can hold everything from a four-bedroom home, including living room sets, large appliances, and outdoor furniture. For business owners, it provides warehouse-style storage for equipment, materials, or inventory.

$125 / month

10 x 40

At 400 square feet, the 10x40 is our biggest space — perfect for storing a large home’s entire contents, multiple vehicles, or a boat and trailer. It’s roughly the size of an oversized two-car garage, offering plenty of room to maneuver and organize your belongings. Many customers use this size for long-term storage, business inventory, or large-scale projects.

$175 / month

OUTDOOR COVERED VEHICLE/RV/BOAT STORAGE (40 x 10)

Our 10x40 covered parking spaces are designed for Montana-sized adventures. With 40 feet of length, these spaces comfortably fit most RVs, travel trailers, boats, and large trucks — keeping them protected from the elements while still offering easy access year-round.

$80 / month

OUTDOOR UNCOVERED RV/BOAT STORAGE

20 FT. LONG OR LESS

$45 / month

Why Rent Storage Units from Security Storage?

Customer Service

We provide genuine customer service and are committed to offering you exceptional value for your hard earned money.

Rent and Pay Online

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