If you're going to go through the trouble of placing a metal box that weighs several thousand pounds in your yard, you should start by making sure your local code enforcers aren't going to promptly make you move it.
As of this writing, I checked the city I live in. Codes vary substantially from place to place, so you'll have to verify for your own locale what the deal is.
Here's how I found out I'd (probably) be enforcer-free:
1. google: your city building code
2. click on first result, go to some your city webpage
3. click on 'frequently asked questions' then 'inspections and permits' then 'permits' then 'do i need a permit?'
4. sweet! under “work exempt from permits”:
One-story detached accessory structures, provided the floor area does not exceed 200 square feet (18.58 m2).
Please keep in mind that although you do not need a permit to build or install the structure you must still abide by any zoning rules and regulations in regards to height, setbacks and trade permits. If you decide to install electricity or plumbing systems into the structure you will be required to obtain those trade permits. Please visit the ‘Zoning’ page to find out what which regulations apply to your home in regards to structure height and/or yard setback areas.”
For further information regarding our storage containers for rental or sales OR a project like this, contact Rolando @AZ Containers at 877-292-6937.