Building a full -fledged garage on the site is not rational. The easiest way is to concrete part of your square meters, and in order to eliminate atmospheric precipitation to the surface of the car, you should build a small canopy.
Making all these manipulations is extremely easy. It will only be necessary to comply with some elementary construction rules. Firstly, under the concrete part of the site there must be drainage. Secondly, it would be nice to mount a reinforcement in concrete, playing the role of a screed. Thirdly, do not be greedy, concrete coating should not be less than 10 centimeters.
Everything related to the canopy is even easier. There are no strict requirements, except for one, there must necessarily be equipped with water drainage, this will avoid the collapse of the structure, and, as a result, violation of the integrity of the paintwork of the car.