So this shed ranging from 64 square feet to 240 square feet can be set up in as little as 6 hours! While you would need to add the utilities this can be pre-configured for your needs. Here is what they say about the materials they use:
Currently Studio Shed’s prefabricated panels use a variety of green building materials. Every Studio Shed is constructed from FSC-certified dimensional lumber. Both the aluminum-frame windows and the HardieBacker siding are recyclable materials. They use Low-VOC paint on all surfaces and have engineered the structure to create an absolute minimum of waste.