Knock Knock matches renters with property owners and managers. Sending a knock or a key tells an owner or renter you are interested. Accept the knock or key, and start a conversation. Ask about the property, leasing options, or arrange a time to view the property. KnockKnock is the simplest and fastest way to find a rental home or a renter for your property. We have launched in Austin, TX at this time, but tweet us @TryKnockKnock and tell us where to go next!