Just like a house, the slab should match the dimensions of the shed. Depending on what you want, the size of your shed, and what local code requires, a concrete base can be optional.

Those kits can be useful if you skills are limited but typically they're not of the same quality as if you bought lumber and stick framed the shed.

Another option is a local shed company. I bought one and the price compared very favorably with building it myself. Assuming you have access to the spot you want the shed, they pretty much drop it in place.

Hello Nick! Our company has been making pre-cut shed kits since 1995, and ship kits free all over the US and portions of Canada (you didn't say where you are located :) ) - our in house staff can answer your questions about preparing your site as well (toll free 1-866-297-3760 EST M-F 9-5pm, Saturdays 9-4pm, Sundays by appointment or chance). Good luck! Kim www.JamaicaCottageShop.com