This comprises use as a dwellinghouse (whether or not as a sole or main residence) by:
- a single person or by people to be regarded as forming a single household,
- not more than six residents living together as a single household where care is provided for residents or
- not more than six residents living together as a single household where no care us provided (other than a use with Class C4)
C3 dwellinghouses have extensive permitted development rights for alterations, extensions, outbuildings, etc and also for change of use to a C4 house in multiple occupation, i.e. multiple occupation with up to six residents.