Ohana Dwelling Unit - P&Z code

[Hotzcatz]

I think the requirements for a house to be granfathered (i.e. legally built without a permit) is for the house to be built prior to 1915 with documentation prior to 1930, but I'd have to recheck to make certain. There is then a whole list of rules for how much changes can be made before the house has to be brought up to code.