Norm, I have a little Mobile Home like that in Florida. Down there, they have what's known as Code Enforcement folks that cruise through to make sure no unbought and unpaid for building type work is being done on anyone's properties. Here in Maryland we have a similar arm of big Government called Inspections and Permits departments. There is where you have to file building plans ( Architect's charges) Pay the permit Fees, then be subject to periodic inspections while the work is in progress. Then once final inspection is approved you get the fun of paying the extra taxes assessed because now you property has increased in value and the government can soak you for more taxes. It sort of incentivises letting your property deteriorate,,,,,,, in my opinion. Needless to say, I bet you can tell, I hate giving my hard earned money to THE MAN.
PS you did a beautiful job with your deck etc