Here's my Studio Shed. It's a company called "Wooley Sheds". They are made of steel and insulated. There's an air-cond too. I will take some pictures of the inside after our storm passes, right now the inside is a pre-storm storage! I've had it for a few years and love it. Hurricane Wilma took some shingles of last year but it's steel underneath so it was only cosmetic.
It's probably stronger than my house! ~Leisa