@Duncan ******
Brandon is absolutely right. In CM, 500 Baht gets you Certificate next day (or only 50 Baht and you get in a few weeks if not urgent). Girl on 2nd Floor back stairwell handles it, just show her your Lease, and in 1 minute your done applying. (No doubt it would take as much time dealing with the "Colonel", for the privilege of paying an extra 500 Baht. Nonsense.)