Hi there.
My city has a lot of low residential suburbs. But even low residential, houses end up being not high, but quite large buildings with several households (3-4) living in them. I tried zoning single squares, or 2x2, but this also resulted in either big houses, or they turned into ugly blocky apartment blocks, with very little variety. between them.
I'd like to create a suburbia with single-family homes like in SimCity 4, what's the best way to do that?