A House Rental Agreement is required when a house, an apartment, a unit or a houseboat is rented. Written documents are always expected to be maintained while renting, irrespective of the kind of relation shared by the landlord and the tenant. A rental agreement or lease is a legal document that outlines an arrangement between an owner of real estate, known as the “landlord” or “lessor”, and someone else that is willing to pay rent while occupying the property, known as the “tenant” or “lessee”. Here is a free house rental agreement letter that you can use to better understand your options. And finally, create and register your lease agreement, these free property rental agreement templates will help you draft yours. Top three tips for writing an airtight lease agreement: Clearly, state the condition of the leasing property.