If a local planning authority (other than a London borough council) to whom application is made for listed building consent, or a London borough council to whom such an application is made by the Commission, intend to grant listed building consent they shall first notify the Secretary of State of the application, giving particulars of the works for which the consent is required.
The Secretary of State may within the period of 28 days beginning with the date of such a notification—
direct the reference of the application to him under section 12; or
give notice to the authority that he requires further time in which to consider whether to require such a reference.
The local planning authority shall not grant listed building consent until—
the period mentioned in subsection (2) has expired without the Secretary of State directing the reference of the application to him or giving them notice under paragraph (b) of that subsection; or
the Secretary of State has notified them that he does not intend to require the reference of the application.