Finding basic rules for building house in the county in Texas

[Arti Piland]

Where can we find basic information & rules on building a house in the county in Texas?  We have already contacted local city & county officials & are finding out bits & pieces of information on building a house in the county.  First, they said there are no rules & then there was something said of a setback & then well restrictions, etc. We gathered that over several phone calls with different people of different city & county departments.  Shouldn't there be one place to find this information?  We feel that there is probably one place, whether in a book or online, where we should be able to find all construction regulations, building requirements, etc. for building a house(s) in the county.  Does anyone know where to find this regardless of what Texas county it is?