Any number anyone here might throw out is about worthless.
Get a couple of quotes local from folks in that type remodeling business. Have them eyeball your exact house and requirements.
Only those type numbers mean much. Try to bargain with a good fellow who needs the work. Maybe if you can bag some of the materials for super discount, such as the columns you can save a few bucks.
Costs vary too much around different parts of the country and are too situational geared to a particular job to throw around meaniful numbers. Only those on an actual quote mean much.
Knowing the real World, something in the few thousand might pass as a bargain. Just for chuckles they are getting over $10K for your basic corrugated lean to car port for a mobile home and that does not include the cement slab. Go figure, peeps are actually paying it. Whatever the market will bear. Your mileage may vary.
