Be conciliatory. He's obviously overworked, underpaid and power tripping on the little bit of juice he has. Call the secretary for the permit office and make sure you have the full requirements for plan submissions and meet them. I.e. sometimes they will not accept plans on 8 1/2x11 paper, 11x17 at a minimum, etc, permit app signed in blue ink, zoning permit pre approved, etc.
Generally once you come hat in hand and let them know he's the Daddy they suddenly become very helpful. Then they start thinking they really don't want to F with your fresh air calcs and daylighting percentages (both bogus ---That which is odiferous and causeth plants to grow--- on an existing basement anyway) and they just come out and sign off on what you're asking for.
Kiss a little ass and you'll get there. Played a Fathom this weekend, cool game.