Digital seems to be made to order for the Auto industry. One of the dealerships I shoot had no exterior signs (top photo). Seems they were fighting with the local authorities for approval (they wanted sign on 3 sides and the county only permits on one side). So I reshoot the building (worse angle, but better day) so the angle matches another building (2nd photo). So after I brought it into PS I carefully adjusted the building with signs so the building shape matched the new image (photo 3), and moved over the signs. Then I straightened the building before printing. PS time, ? hour! Not bad.
Not bad at all. I have been working with perspective tools in PS like this awhile and I know how difficult it is to get a believable angle. Had you not explained your steps, i would have assumjed this was a straight shot.