Some landlords, especially those who are new to the world of landlord tenant relationships, are not aware of the rights to privacy a tenant has once a lease is signed.  Even though the landlord owns the property, they do not have the right to show up on the premises whenever they like.  More importantly, a landlord is not allowed to send others to a rental property without regard to the privacy of the tenant.  To avoid placing yourself in a difficult position with your tenant and landlord tenant laws, try keeping a few things in mind.