Yes but tam you are a complete one off and I tend to think the same as you but there are millions that don't do ,if you need to deal with them you have to follow their ideas I'm afraid.I've never bought a van with a hab check and never had one done since my frankia as most of the time the one doing it is a clown. The few folk on here that get them done is because of a warranty
This is a 26 year old motorhome that is far from original. I can only see problems letting any so called professional near it.
P.si just bought a van that the fridge didn't work and the gas system was incomplete
Just ignoring them won't help you sell your van.