While a little conflicted now, I do understand not to ‘throw the baby out with the bathwater’, as they say in the UK 😉
My main worries were safety, and how much property taxes would be raised once the correct sq footage was known.
Still as you all point out – few people would buy a place without a thorough inspection – if the addition is unsound (or too ugly to live) then you can always make the sale contingent on it being ‘fixed’.
But – its pretty amazing the amount of SFRs here in L.A that have something tacked on to them.