Find your preferred pre-built garage kit. Kits can be found at local retailers that specialize in sheds and other pre-built storage units. They can also be found at home improvement stores such as Home Depot or Lowe's. Choose a design and style that coordinates with the house or building it will be near. There are many different options to choose from.
Order your pre-built garage kit. You can choose between a kit containing pre-cut pieces that require assembling or a pre-assembled garage which is easier to install. The garage kit can be delivered right to your driveway to avoid the hassle of moving large pieces.
Follow the step-by-step instructions that come with the kit to assure that the garage will be steady and sturdy. The instructions are fairly simple and require nothing more than a few basic tools and a ladder. Some pre-built garage kits come without shingles for the roof or finishes for the outside, so you will need to purchase these separately to add to your garage.