Cornerstone Storage offers secure self-storage in Sioux Falls, SD — with options for every need and budget. Choose from climate-controlled storage units, standard self-storage, contractor bays, warehouse-size units, and outdoor parking for RVs, boats, and vehicles. Enjoy convenient drive-up access for fast, easy loading. Perfect for homeowners, contractors, small businesses, and e-commerce sellers. Serving Sioux Falls and surrounding communities with affordable, flexible month-to-month storage. Locally owned and operated with gated access and security monitoring. Reserve your unit online today!
New management. Is doing amazing things if you need an storage place this is the place to be!!
April 2026
It's impressive what the new management is doing here. The online rental system is so simple to use, and they have a lot of options. Everything we have rented was in pristine condition, too. Highly recommended!
April 2026
You can rent online so easy now! New ownership is really making a huge difference and doing a amazing job. The variety here is really incredible!
