One Mount Washington property is testing those limits. In the private remarks, the instructions for viewing this for-sale property call out a few things, from the not-so-unusual "drive-by only," to the "do not disturb occupants." But here's the kicker: you can't even stop your car. If you disturb the occupants, you "do so at your own risk."

The property is also a cash-only sale, and since it is being sold as-is there are no inspections and contingencies. No photos and site unseen, would you buy?