What is the smallest self storage unit?

The smallest self storage unit you'll typically find is a 5x5 (25 square feet), though some facilities offer storage lockers as small as 3x3 feet. Self storage mini units like these are a great fit for documents, seasonal decorations, personal keepsakes, or small business files — basically, anything that deserves a safe home outside of yours.

What's the difference between a mini self storage unit and a storage locker?

Both solve the same problem: getting you more space beyond what you have at home. The difference comes down to size. Mini self storage units range from 5x5 to 5x10 feet, while storage lockers are typically smaller — around 3x3 feet. If you've got more than a few boxes to stash, a self storage mini unit is usually the more workable choice.

What's the most affordable self storage option?

A 5x5 mini self storage unit is typically your most budget-friendly option, running about $35–55 per month in most areas. To find the best self storage mini storage deals near you, use SelfStorage.com's search and compare tool — just enter your zip code, filter by size and features, and browse thousands of listings from local facilities side by side.

Affordable Mini Self Storage Units Near You

Mini self storage units are the most practical and budget friendly way to reclaim your space without committing to more room than you actually need. Ranging from 5x5 to 5x10 with lower ceilings than traditional self storage, mini self storage sits just above storage lockers. From basic self storage mini units to small self storage with added amenities - there's a solution out there for you. SelfStorage.com makes it easy to compare self mini storage rentals in your area so you can find the right fit at the right price.

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What Is Mini Self Storage?

Mini self storage is an affordable, space-conscious way to declutter and downsize in your home. Mini self storage units are compact 5x5 and 5x10 self storage units with a ceiling height that is typically less than 8 feet. These units have incredible storage capacity for their small footprint, offering as much room as a walk in closet or small bedroom.

Mini Self Storage Unit Pricing Guide

What does a self storage mini unit cost? You'll find that these small units pack a big punch with a miniature price tag. Here's what you can expect from mini storage prices and what they can hold for you.

5x5 Mini Self Storage

25 sq ft

Average 2025 Price

$35–55/month

Common Items Stored

Small bedroom furniture, 15–20 boxes, seasonal clothes, holiday decorations, small appliances, sports equipment

5x10 Mini Self Storage

50 sq ft

Average 2025 Price

$55–85/month

Common Items Stored

Studio apartment contents, major appliances, 30–40 boxes, business inventory, exercise equipment

How to Use Mini Self Storage

Who Benefits from Self Mini Storage?

Apartment renters
College students
Military families
People preparing to move
Small business owners
Growing families
Home renovators and DIYers

What Can Self Mini Storage Do for Me?

Offers extra closet overflow for seasonal clothing and decorations
Temporary self storage for life transitions
Offseason storage for children's toys and sporting goods
Provides personal and professional document storage
Deployment or PCS storage
Secure home items during renovations and DIY projects

Rated 4.4 out of 5 stars by our customers on

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Debra Tillung

September 20, 2023

Quick And As Easy As You Can Get!

I made a reservation on the internet to see the 5x5 storage locker online and it was as simple to do as you can get. I went the next day and seen the storage locker and the 2 men that helped me were quick and helpful and glad to answer any questions I had. So everything went very smoothly!!!

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Nancy Gottschall

July 26, 2022

Excellent Customer Service

I reserved a 5x5 unit online, then went to the store to sign on the dotted line. I was first shown the unit I had reserved, but decided it was a bit too small. No problem! Tina showed me a couple other unit size options. I choose a larger unit best suited for my needs. No hassle about the previous reservation. Tina answered all my questions and clearly explained every aspect of renting the unit -- even showing me the best entrance to use to get to my unit; explaining payment due dates; hours of operation and everything in between. Great customer service. I would recommend SelfStorage to anyone looking for a clean storage facility that won't destroy your budget with courteous management, too.

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Andre Bucknor

May 15, 2022

Didn't know I needed this

I do my due diligence. Whenever I'm looking for a product (this case a storage unit) I always look for the best quality and price. I reserved with a branded storage place and the BEST possible price. Average prices for a 5x10 were around $100 (but over), but I was able to reserve a unit for $76/mo with a first month half off deal. Even better, SelfStorage lists all of the competitors prices to compare. So, stumbled across this site, but glad I did.

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Deb Sharpnack

March 02, 2020

The process of reserving online was simple

The process of reserving online was simple, the employees in the office were welcoming and ready with the data to assist with the reservation and paperwork, the facility was immaculate and easy to navigate, the environment was safe and secure, and I enjoyed a Jolly Rancher candy complimentary! The price for my 5x10 unit in Orange County is reasonable and the special promotion was a plus. I was impressed with everything!!!

Frequently Asked Questions

It really depends on how long you're planning to store. Renting a self mini storage unit — at roughly $35–55 per month — is usually the more affordable path for short-term situations. A comparable shed, on the other hand, runs $800–2,500 upfront before you factor in installation, labor, or foundation work. If you're storing long-term and have the outdoor space, a shed might pay off over time. But for flexibility and low commitment, mini self storage units are hard to beat.