In full agreement with the preceding posts. Not truly a technical concern...
Even if you own the land or propertry there can be problems. Family member last year could not get drywall installed (matter of convenience) when he finished his man-cave basement. Apparently there was a requirement that the low voltage wiring he installed (audio, hdmi, ethernet) had to be inspected beforehand. Apparently low voltage ( <50 v) is now being treated much the same as the electrical installations. Required more permits, drawings, inspections, $, etc...
You may need environmental permits, digging permits,etc, etc.. And once they know you have done it all then your property value will go "up" along with your property taxes..... And if discovered after the fact you may be forced to tear it all out. And/or fined.
DIY is not what it used to be.