Adding storage units to unused outbuilding

[Jared Heinen]

I am currently in the process of closing on my first rental property, a house hack triplex. The property has a very large detached garage (roughly 1800 sq ft). I would like to build storage units into the garage as the tenants have no desire to park in there. I am wondering if anyone knows of any storage unit kits or something similar to install rather then custom building everything. Any other thoughts and ideas are welcome as well! Thank you

[Chris Koenig]

Have not personally used these but they are affordable and have seen them in person at storage sites & trade shows. 

Janus MASS units