Subdividing Properties for Investment

[Oliver Yu]

I am exploring some opportunities to purchase properties in desirable areas with larger lots and subdividing them to build/sell more units.  Is there a good resource on learning how evaluate these kinds of deals?  Also, what is the best way to find out the regulations and restrictions that matter around subdividing the properties.  More specifically, I'm currently looking in the Austin, TX area, but am interested in general information, too.