Your neighbors have to send you zoning permits. Once you have received enough permits to expand click on "Build" and then on the expansions tab.
it will apper in your goals
The way I found is to just get rid of everything.
Sadly, you can not. To start over though, you can just delete everything in your city for a fresh start. Also, you can make another facebook account and play Cityville on that one.
Click on the build button. Then go to decorations, and then click on the city flag to purchase it.
There are no cheats for CityVille, look up CityVille glitches though.
I think it is unreleased, but there is one on Samantha's city.
Double click, hold, then press the space bar.
Yes, you can. You can see Samantha's city, for example.
I find that the only way to restart your city is to just get rid of EVERYTHING!
farm ville, frontier ville, and millionaire city
Old New York, tottaly new... and old
CityVille happened in 2010.