Class A1 – shops and retail outlets

For those within Class A1, the customers in all cases should be “visiting members of the general public”. Property in this area could include:

• Shops (where goods are sold) – but excluding betting offices and payday loan shops which are sui generis
• Post offices
• Premises where tickets are sold and travel agents
• Premises selling cold food (intended for consumption off site)
• Hairdressers
• Florist
• Funeral directors
• Premises where goods for sale are displayed (a showroom)
• Premises where “domestic or personal” goods or services are hired from
• Premises where articles are deposited for washing, cleaning or repair

Class A2 – professional services

Class A2 moves on to cover “financial and professional services”. Again, these must be offered to the general public. This time, the specification is that “principally” the clients or customers of these types of businesses will again be visiting the premises:

• Financial services
• Professional services – except those involving health or medical services
• Any other services deemed “appropriate” for location within a shopping area

Class A3 – food and drink

Class A3 consists of one use, namely premises which are to sell “Food and drink”, either to be consumed on site, or on or offsite in the case of hot food. This includes restaurants and cafes.^[11]

Class A4 – drinking establishments

Drinking establishments such as public houses, wine bars or other such establishments.

Class A5 – hot food and takeaway

For the sale of hot food intended for consumption off the premises.

Class B1 – business

B1(a): Offices – except those already mentioned within Class A2.

B1(b): Premises for Research and Development

B1(c): Industrial processes which “can” take place within a residential area without damaging the “amenity of that area”

Since these classes are described in quite general terms, professional advice is advisable before proceeding with negotiations to occupy commercial premises. As the remaining Classes in Part B continue, the uses begin to relate to increasingly specific industrial processes.

Class B2 - general industrial use

General Industrial Use for the use of carrying on an industrial process other than one falling within class B1 and they may not be correct.

Class B8 – storage or distribution

Applies to properties which are used “for storage or as a distribution centre^[12]”

Class C1

Class C1 deals with hotels, boarding houses and guest houses which do not offer care as part of their services.

Class C2

Residential institutions - Residential care homes, hospitals, nursing homes, boarding schools, residential colleges and training centres.^[13]

Class C3

Class C3^[14] addresses use as a “dwelling house”, as a principal or secondary residence. The classifications were updated in 2010^[15] aligning the definitions of usage C3(a) (“single household”) and C4 ("house in multiple occupation") with those in the Housing Act 2004.

This class is formed of 3 parts:

C3(a): those living together as a single household as defined by the Housing Act 2004, what could be construed as a family.

C3(b): up to six people living together as a single household and receiving care e.g. supported housing schemes such as those for people with learning disabilities or mental health problems.

C3(c): allows for groups of people (up to six) living together as a single household. This allows for those groupings that do not fall within the C4 HMO definition, but which fell within the previous C3 use class, to be provided for i.e. a small religious community may fall into this section as could a homeowner who is living with a lodger.

Class C4

Houses in multiple occupation – small shared houses occupied by between three and six unrelated individuals, as their only or main residence, who share basic amenities such as a kitchen or bathroom.^[16]

Large^{[clarification needed]} houses in multiple occupation - with more than 6 people sharing are unclassified by the Use Classes Order. In planning terms they are described as being sui generis. In consequence, a planning application will be required for a change of use from a dwellinghouse to a large house in multiple occupation or from a Class C4 house in multiple occupation to a large house in multiple occupation where a material change of use is considered to have taken place.^[17]

A number of authorities have issued Article 4 Directions^[18] to remove the right to carry out a conversion from C3 to C4 as permitted developments. This has the effect of requiring planning permission for any change of usage from a "dwelling house" to a "house in multiple occupation". For example, Nottingham City Council requires planning permission for any conversion of a family dwelling to an HMO in the Nottingham area.^[19]

Class D1

Class D1 covers many ‘public’ services (which do not fall under Class A): These are mostly F1 or F2 as of 2021

• Medical or health services premises which don't form a part of the practitioner's home
• Crèches, day nurseries or day centres
• Premises for education, is now Class F
• Premises which display works of art without commercial transactions (sale or hire)
• Museums
• Public libraries or reading rooms
• Public or exhibition halls
• Premises “for, or in connection with, public worship or religious instruction”

Class D2

Class D is revoked from 1 September 2020.

• D1 is split out and replaced by the new Classes E(e-f) and F1
• D2 is split out and replaced by the new Classes E(d) and F2(c-d) as well as several newly defined ‘Sui Generis’ uses.

Class D2 used to address the use of premises for entertainment and leisure purposes:

• Cinemas
• Concert halls
• Bingo halls (and formerly casinos)
• Dance halls
• Swimming baths, skating rinks, gymnasiums or “area for other indoor or outdoor sports or recreations, not involving motorised vehicles or firearms.^[20]”