I have a SFH on busy highway 51 in northern Wisconsin. It has a wooden "shadowbox" fence facing the highway that can be seen nearly a mile away. Every time I drive past I keep thinking that this fence could possibly make me money.
Can I turn this fence into a "billboard"? Was thinking allowing local businesses to put up vinyl signs, but want to be sure I'll be legal in doing this. I called the town clerk regarding putting up a sign and was told they have a "sign ordinance", but I'm not sure if that applies to billboards; didn't ask for clarification.
Who should I contact to make sure I'm legal or is this something I shouldn't even bother with? Has this ever been done?