Verified answer

The installing of a garage door is considered a medium-difficult do-it-yourself project for a two-person team, at an average cost of $300 -$500, depending on the type of door chosen.

If you intend to have a contractor do the work, expect to pay $750 -$1,200 to have an average-sized 16x7 foot steel garage door installed and up to $3000 for a custom stained exotic wood panelled door.

To gut your garage and not make good as in fix the holes where screws and alike where, should run you approximately $300 - $400.

If would be difficult to give you anything other than a guess without knowing just how big the garage is and what type of finish you expect after the conversion. If you wanted a average type door, plus no finish to the walls to the garage you should be looking at approximately $1350 depending on which door.

Edit:

If you intend to keep what has come out of the garage to resell , if not add about $400 for a dumpster.

Is this the price for a Legal conversion. What about fire walls, vents, electrical and to shut down the A/C vents