Planning permission and a residential conveyancing transaction

I am acting for a purchaser in a residential conveyancing transaction. My client has a number of plans to develop the property and seeks advice as to whether or not he needs specific planning permission for the list of works contemplated. Where can I find a list of matters which do/do not require such permission?
 
Certain matters which would otherwise fall within the definition of development (and thus require planning permission) are specifically excluded from that definition by the Town and Country Planning (General Permitted Development) Order 1995, as amended.
 
A summary of the main cases where permission is not required either by the statute or by regulation is listed in the Conveyancing Handbook (18th Edition) ch 24.4.1.
 
An interactive explanation of which matters do need planning permission in residential conveyancing may also be found on the government website.
 
In any case of doubt, the Act and the various regulations made under it should be checked, and/or advice sought from the planning department of the local authority.