I have a building that was originally on a 30x30 grid, but I've downsized it so it can easily fit a 20x20, this is so that I can place it in other parts of town. However, I am unable to change the size of the grid. Is there anyway I can just copy the buildings on the lot and paste them onto a 20x20 grid? Or downsize their existing grid?

Okay lets try another question -- is there anyway to place lots that don't exactly fit in Edit Town mode, using a cheat or something such as objects with moveobjects on?

If the size of the lot you want to place (let’s say 20x20) is smaller than the lot you want to place it on (maybe 30x30), then yes.

If the lot you want to place (30x30) is larger than the one you want to place it on (20x20) then no, it’s not possible with the way the engine is hard coded. Cheats and mods won’t do anything.

Thanks guys

This is one of those things TS4 actually does better for a change. But of course, that's cancelled out completely by the fact that you can't really add or move lots at all.