Safe, Reliable Self-Storage in Sun Prairie, DeForest, & Madison, WI

When you choose A+ Storage, you can rest assured that your belongings and valuables are in safe hands. Our extensive range of storage facilities offers protection and safekeeping for goods of all sizes and needs. We offer clean, climate-controlled, and highly-protected facilities to keep your belongings safe for as long as you need.

We Offer Senior & Military Discounts!

Excellent Customer Service

Unmatched Facilities

At A+ Storage, we go above and beyond for each of our clients. As a family-owned and operated business, we know the importance of speaking to a real person every time you need assistance. You talk to a knowledgeable employee, not a call center. We strive to always answer the phone and take no shortcuts when it comes to technology and security. We treat your valuables like our own!

At A+ Storage, You Can Expect:

Self-Storage
Household Storage
Commercial Storage
Car Storage
Motorcycle Storage
Security Lighting
Video Surveillance
Clean Units
Paved Driveways
Climate Controlled Storage Available
Pest Control
Contractor Bays for Full Function, Roughed Out to Add a Bathroom
A Wide Range of Unit Sizes, From 5’x10’ to 40’x50’

Self-Storage
Household Storage
Commercial Storage
Car Storage
Motorcycle Storage
Security Lighting
Video Surveillance
Clean Units
Paved Driveways
Climate Controlled Storage
Pest Control
A Wide Range of Unit Sizes, From 5’x10’ to 12’x50’
We have almost 1,400 units to serve your storage needs

Learn More About Our Storage Services

Storage Facilities

Sizes & Prices

Policies

Sun Prairie
Location

DeForest
Location

Madison
Location

Parkside
Location

A+ Storage is a Proud Sponsor of the Following Organizations

A+ Storage is a Proud Sponsor of Shelter From The Storm Ministries: Kindness 4 Kids

by nextAdmin1 | Apr 20, 2026 | Community Involvement

An Unforgettable Evening of Inspiration and Impact It was an unforgettable evening filled with meaningful connection, powerful stories, and an inspiring keynote that uplifted and motivated all who attended. The night began with a welcoming cocktail hour, creating the...