Boarding houses are a type of accommodation where people rent a room and share common facilities such as a kitchen or bathroom. The word 'boarding house' has few antonyms as such, but we can use phrases to describe the alternatives. For example, instead of a boarding house, one could opt for a hotel or a bed and breakfast, both of which provide more privacy and personalized services. Alternatively, one could choose to rent an apartment or house instead of living in a boarding house. Other antonyms for boarding house include dormitory, hostel, and shared housing, all of which offer a communal living experience but with different levels of privacy and amenities.