Security Self Storage of Madison

Storage Unit Sizes & Description

Finding the right self storage unit can feel overwhelming. That’s why we’ve put together this simple guide to help you understand our self storage unit sizes and what they can hold. Whether you’re looking for a small space to declutter or a larger unit for a major move, our storage facility offers a variety of options to meet your needs. Browse the table below to find the perfect self storage solution for you.

SizeCapacity 
5×5 Similar in size to a small closet, offering approximately 25 sq.ft. Perfect for decluttering small spaces or storing seasonal items. Fits several medium-sized boxes of books, clothing, or documents. Great for storing electronics or business files.
5×10 Large closet size unit. It comfortably holds a queen-size mattress set, dresser, and several boxes. Ideal for small apartment moves, decluttering a bedroom, or storing seasonal furniture. Think of it as an extra room for your belongings.
10×10The size of a large walk in closet. It’s perfect for storing the contents of a 1-bedroom apartment, including a queen-size mattress set, sofa, dining table, and numerous boxes. Great for those moving, renovating, or needing significant decluttering space
10×15Comparable to a small bedroom. It can fit the contents of a 2-bedroom apartment, including appliances like a refrigerator or washer/dryer, along with furniture and boxes. Perfect for those moving or undergoing extensive renovations.
10×20The size of a single-car garage. Fits the contents of a three-bedroom home, including large furniture sets and appliances. This size is ideal for families moving from larger homes, or businesses storing excess inventory. Think of it as a secure, extra garage.
10×25An oversized garage. Holds the contents of a 3-4 bedroom home, including furniture, appliances, and large equipment. Perfect for families relocating, businesses storing extensive inventory or equipment. Think of it as a secure, extra-large garage space.
10×301& ½ car garage. Accommodates the contents of a 3-4 bedroom house, furniture sets, major appliances, workout equipment, vehicle or a small boat. Ideal for relocations, or businesses inventory. It’s a secure, oversized garage for all your belongings.

Outdoor Storage Also Available

*Call for climate control availability. We have a number of different size units available.

About Our Storage Facility

Welcome to Security Self Storage. We’re located in Madison, Wisconsin and offer clean, well-lit, gated, and secure indoor and outdoor storage units with video surveillance to keep your valuables protected. Choose from traditional self storage, where you drive right up to storage unit’s door for easy loading/unloading, climate controlled storage or outdoor storage for boats and RVs.


Our goal is to provide clean, safe and secure storage at a price below  our competitors. The price of your storage unit is based on the size, and the size you need depends on what you’re storing. Please give our office a call at (608) 441-1111, or view the our storage units page to get an idea of what can fit into a particular size unit.

Security Self Storage offers a variety of different size units, from a small telephone booth size to a large multiple car garage size. Whatever you need to store, whether large or small, we are here to help.

Tour Our Climate Controlled Storage Facility

Customer Reviews

“Affordable, clean, secure, and friendly employees. I would definitely recommend them.” -Martha E.
See more of what our customers have to say by visiting our review page!