You rent out a room in your house by using a lease agreement stating you’re renting out a room and not the entire property. If you’re a tenant living in a rental property, you can sublet a room to another tenant using a room rental agreement.
A standard residential lease and a room rental agreement allow you to establish quiet hours, times guests can visit, how to divide utility payments, and rules regarding pets, smoking, and parking.
To rent out a room, both parties sign the agreement and the landlord collects a security deposit from the tenant before handing over the keys.