I'll also give you my opinion on whether or not you should save money by designing your own carport or buy a set of simple carport plans.
If you live on a property without enough space to build a garage, the next best option to building a garage may be to build your own carport.
A carport will provide your car with overhead protection from the elements like rain and snow, and will also function as a protective shield from falling leaves and branches if your driveway is lined with trees.
Best of all, a carport is not too difficult to build on your own.
If you're ambitious, you may be tempted to draw up your own set of plans.
However, I can tell you from experience that you'll usually save time and money in the long run by buying a set of simple carport plans because even though a carport looks simple enough to build, the design can be a bit more complicated than you think.
A set of carport plans will also provide you with an accurate material list to ensure that you buy the right materials in the right quantities.
This will allow you to budget your project appropriately and avoid delays because you didn't buy enough wood at the outset, or cost you extra money because you bought too much.
A set of plans will also help ensure that the design meets your local building codes and HOA regulations.
Carports also have to withstand heavy winds because many do not have walls to shield out the wind.
Therefore, if you are prone to storms and heavy winds, you'll have to build your carport so that the roof does not get blown away by the elements.
Also, if you live in an area that gets pounded by heavy snowfall, you'll need to build the structure so that it does not collapse under the heavy weight of accumulated snow.
With these factors in mind, in the long run you'll save time, money, and frustration by buying a reliable set of plans rather than attempting to design your carport on your own.