Oh damn... I would have definitely said straight to her face that she can forget about her "Umschlag"... especially with such a "performance". I really can't stand that.
Phew, that really doesn't sound good. As far as I know, the mayor also has nothing to do with building permits. I think if I were you, I would be pretty angry and try to report the real estate agent to the Chamber of Crafts or whoever is responsible.