Overview
A boarding house is a house (frequently a family home) in which lodgers rent one or more rooms on a nightly basis, and sometimes for extended periods of weeks, months, and years. The common parts of the house are maintained, and some services, such as laundry and cleaning, may be supplied. They normally provide "room and board," that is, some meals as well as accommodation.
Lodgers legally only obtain a licence to use their rooms, and not exclusive possession, so the landlord retains the right of access.
Arrangements
Formerly boarders would typically share washing, breakfast and dining facilities; in recent years it has become common for each room to have its own washing and toilet facilities. Such boarding houses were often found in English seaside towns (for tourists) and college towns (for students). It was common for there to be one or two elderly long-term residents. "The phrase "boardinghouse reach" [referring to a diner reaching far across a dining table] comes from an important variant of hotel life. In boardinghouses, tenants rent rooms and the proprietor provides family-style breakfasts and evening dinners in a common dining room. Traditionally, the food was put on the table, and everyone scrambled for the best dishes. Those with a long, fast reach ate best."
From Wikipedia (CC BY-SA 4.0).