depending on the county you may actually need a real survey. my county does, also requires plans and elevations, requires copies of stair designs etc.
homeowners permits also may require a certified copy of the deed in many cases to prove that the owner is actually the one pulling the permit. if you live on a well and septic, you will definitely need a proper survey marking the location of well and septic.

if you call your building department they will have the permit package that you can print off, it will give you the requirements.

also do not dig without having your services located,