Carport Ideas

Our mortgage banker friend has informed us that covered parking would more than pay for itself in terms of increasing the value of our property. We would just have to sacrifice a major portion of the yard. I am thinking that we could build a carport along the lines of this pavilion. It would be wide enough to accommodate two cars and a garden tool area. On the alley side it would be walled and have garage doors with openers. On the inside it would be open like the pavilion with knee walls. It is this pavilion stretched out wider and longer.
The tool area would be enclosed for security, but there would be wall sections that slide wide open for easy access.
Part of the idea is that if we were entertaining we could use this space as a pavilion and this type of construction would cost less than building a solid structure. This is our non- apartment idea. We are encouraged to add an apartment to a garage for the sake of neighborhood density, but we have an opinion contrary to that.