Good luck with the city and with the annoying neighbor. At least the city should leave you alone once you finish the permit process.
We live in a community with regulations that at least one car must be able to park in the garage. Our garage is labeled as a 4 car garage. but we can only fit 2 cars. One stall is taken up by my woodworking stuff. The other side has a 16' door but there is a dumbwaiter sticking out right where the driver's door would open. There is not enough room to park 2 cars and still allow the doors to open.
Steve