Not sure if I am posting in the right category. Having trouble finding out the distance a 500g propane tank needs to be away from structures and ignition sources in Henderson County NC. Most internet searches show 10ft. I am pretty sure I was told 25ft by a gas company. If any one knows I thank you in advance.
Is this specific to Henderson County NC? Am not clear if local governments may have higher standards that supersede these.
Call a local propane supplier. They will know. 
Will do. Was not being patient and wanting to waiting to Monday.
Most common sizes for residential can be right next to the house with a couple of safety distances that apply for openings and ignition source.