Some offences require nothing more than a stern verbal warning, but others could be grounds for deportation. The tenant should be able to see the house rules on a black wall or board and have their own copy. Depending on the circumstances, the most likely housing rules to consider to protect your investments and keep good tenants are as follows: a tenant may apply to QCAT for an existing house rule that they deem inappropriate. They must also prove that other tenants feel it is inappropriate. Before QCAT makes a decision, QCAT will consider how other customers are affected by a rule change.. . .