In the most general sense, landlord-tenant law governs the relationships between an owner, or landlord, of a home and the person who is renting the home as a residence - the tenant. The law covers both residential and commercial property.
The lease is probably the most important item governing the landlord tenant relationship. The lease is the legal agreement, or contract, between the landlord and tenant. The lease spells out the tenant's rights, and allows the tenant to use the property for a specified period of time. The lease sets the terms, the rent amount, the length of the tenancy, and all the other rules.