A landlord is a person or entity that owns and rents out property known as rental units. Landlords will often provide tenants with a place to live in exchange for rent payments. Generally, landlords are responsible for the maintenance of the property they own and must provide essential services such as water, heat, sanitation, and pest control among others. Additionally, landlords have duties and responsibilities towards their tenants including maintaining a safe living environment, giving reasonable notice before entering their tenants’ premises, and providing written receipts for all payments received.