When faced with eviction or other rental disputes, it is important for renters to know their rights as a tenant. Both federal and state laws offer protection for tenants, though some states may have fewer tenant protections than others. Generally, a person's rights as a tenant include the right to live in a habitable environment; this includes the right to heat, running water, proper garbage removal, and the right to live in a safe structure that complies with building codes and other housing regulations. Other rights as a tenant may include the right to have common areas properly maintained, such as stairwells and lobbies. Landlord tenant law also protects tenants against discrimination and harassment. Tenants also have a basic right to privacy in their rental unit; laws vary, though a landlord must generally give advance notice before attempting to enter a tenant's property except in emergency situations. Disabled tenants also have additional rights under federal law, including the right to have a helper animal.