Elsewhere around your house there are no restrictions on the area of land which you can cover with hard surfaces at, or near, ground level. You are viewing guidance for England.
However, significant works of embanking or terracing to support a hard surface might need a planning application.
If you live in a listed building, you will need listed building consent for any significant works whether internal or external.
Please note: the permitted development allowances described here apply to houses not flats, maisonettes or other buildings. View guidance on flats and maisonettes here.
Also note that these rules only cover your Patio/Driveway. Any other work such as fences, walls and gates or a dropped kerb may require planning permission.
Generally a new driveway or patio area does not require building regulations approval.
However, you will need to make sure that any alterations do not make access to the dwelling any less satisfactory than it was before. So, for example, changing levels to introduce steps where none existed before would be a contravention of the regulations.
This is an introductory guide and is not a definitive source of legal information. Read the full disclaimer here.
This guidance relates to the planning regime for England. Policy in Wales may differ. If in doubt contact your Local Planning Authority.