I know, this is completely crazy, just asking the people who ultimately decide, instead of people on the internet, whose expertise you don't even know.
Somehow it seems like nowadays there are more and more people who like irony, tease the questioners, and well. Of course I googled.
Calling the building authority? Do you know how the officials/employees often are nowadays? They first check what kind of person you are, maybe dig out the old building application, etc. Do you think they want to do you a favor? They might have their eye on you and if you are 10 cm too close to the building boundary, there will be trouble. Budgets are all tight. If the carport is exemption from approval, no one at the office needs to find out. In my 60 years, I have seen enough horses vomiting. Sorry.
Why should some forum members have no idea? Maybe one of them has built such a carport themselves and shares their experience. I just have to pick out what I need.
It's not life-threatening anyway. Somehow you manage. I am also looking for answers on how to interpret the data. It says on the internet when a carport is exempt from approval, but how I have to interpret that is the question.
But thanks for your words