During an open house, a potential purchaser has noticed the granny flat does not have a window in the kitchen or main bedroom, which would appear to be contrary to Council requirements. At the time of listing, your vendors stated the granny flat was Council approved, but you have not investigated this yourself.
The potential purchaser has submitted a formal Offer to Purchase with a special condition; subject to proof of Council Approval for the granny flat.

Q. You need to make sure this documentation is available for the purchaser. How do you work out if the granny flat is Council approved or not?
Mention any specialist advice you would seek and any relevant legislation you need to follow.