Decoration and building limit

I was wondering the same thing on whether there was a building and decoration limit, but what concerns me most is the land you buy... I'm wondering if it's possible for you to completely buy all the land and make a clean Springfield because that's what I'm aiming to do.

I'm letting Lisa do both Cleaning in Springfield and Krustyland, I thought not to bother with Homer because he just groans if you make him do it, so it's best to leave it to Lisa.

It would look so excellent with a clear land on both sides, if I can clear the whole left side I'm planning to place the Monorail on that side.. might take some thinking of how to do three stations as one.. but it'll worth the work :) I hope... my town really needs a lot of work and thinking, that's why I'm hoping if I can buy all the land.. sorted :D