A function hall or banquet hall is a room or building for the purpose of hosting a party

Party

A party is a gathering of people who have been invited by a host for the purposes of socializing, conversation, or recreation. A party will typically feature food and beverages, and often music and dancing as well....

, banquet

Banquet

A banquet is a large meal or feast, complete with main courses and desserts. It usually serves a purpose such as a charitable gathering, a ceremony, or a celebration, and is often preceded or followed by speeches in honour of someone....

, reception

Wedding reception

A wedding reception is a party held after the completion of a marriage ceremony. It is held usually as hospitality for those who have attended the wedding, hence the name reception: the couple receives society, in the form of family and friends, for the first time as a married couple. Hosts...

, or other social event.

Function halls are often found within pubs, clubs

Club

A club is an association of two or more people united by a common interest or goal. A service club, for example, exists for voluntary or charitable activities; there are clubs devoted to hobbies and sports, social activities clubs, political and religious clubs, and so forth.- History...

, hotels

Hotel

A hotel is an establishment that provides paid lodging on a short-term basis. The provision of basic accommodation, in times past, consisting only of a room with a bed, a cupboard, a small table and a washstand has largely been replaced by rooms with modern facilities, including en-suite bathrooms...

, or restaurants

Restaurant

A restaurant is an establishment which prepares and serves food and drink to customers in return for money. Meals are generally served and eaten on premises, but many restaurants also offer take-out and food delivery services...

. Some are run by fraternal organizations and rented out as a fundraiser for the organization. Some condominium associations

Condominium

A condominium, or condo, is the form of housing tenure and other real property where a specified part of a piece of real estate is individually owned while use of and access to common facilities in the piece such as hallways, heating system, elevators, exterior areas is executed under legal rights...

 and apartment buildings have these to keep the noise of parties out of the residential units.