Great idea for older houses that need a little more sunshine!
Here's my feet in what I call our Breezeway. Double carport I decked and screened in. We spend most of our time out here for three seasons.
Did an older house today where they wanted more room. Others nearby added incongruent monstrosities. How about a nice sunroom in back?
Here's an example of a prefabricated addition. Click on image for link and justification.