Each rental unit registration holder must post the rental unit registration in a conspicuous spot near the front entry to the rental unit in a public corridor, hallway or lobby if the rental unit is in a multi unit building. In the event a rental unit is a single family home, or is three units or less, delivery of a copy of the rental unit registration in person or by mail to the tenant is required. Failure to post or deliver the registration and keep the registration posted, if required, is a petty misdemeanor, but is not grounds for termination of registration.