Sheds

[Great-Kazoo]

Unless you own,on't put on concrete base. Even if you do, NO pad. That's considered a permanent fixture and a higher property tax, in some areas. Since you rent i would suggest a single axle enclosed trailer. Yes it's more than you have or are looking to spend. However it's MOBILE. Plus doubles as storage.
http://fortcollins.craigslist.org/rvs/3733947607.html

This one is THE Deal. Already wired with cabinets etc.
http://fortcollins.craigslist.org/rvs/3719201219.html

Why an enclosed trailer besides what i already mentioned?

If you move, a "shed' is a hassle to move. The EC goes where you do. If you decide you want to put it somewhere else in the yard, you can. Once a shed is up they are a PITA to do anything with.
IF the town / city zoning officer discovers you have a wired shed, they can & will fine you for a non -permitted living space. Same for taxes, way more, once it's considered "habitable"

We have a few sheds on the property. The spousal unit said No More. Why are we paying for something we can't take with us AND if we have to bug out, a trailer is ready when you are.

Just my $ 0.02