The incumbent of a benefice shall keep the Board informed of matters affecting buildings and land belonging to the benefice, other than churches, and in particular of matters arising from any notice given to him by a Government department, local or public authority, public utility undertakers or, in the case of property held on a lease or tenancy, the landlord of the property; and the Board shall, at the request of the incumbent, advise on or undertake negotiations in respect of any such matters.