Yeah this sort of pisses me off.  If a road is marked private I assume there's only one owner.  If there are multiple houses connected to a road, the road must have some sort of right of way and no longer completely "private" even if they have to pay a HOA fee for the road... so still wondering what the guidance is on stuff like this -- as well as OSM QA tools (forgot, was it OSMI or osmose?) that flags "public" roads hidden behind private roads ... Then again I think driveway should all automatically be flagged as private...