16.—(1) This section applies if the council is satisfied, on the application of the owner, that there are special circumstances that justify the extension of the period for which a temporary exemption notice has effect.
(2) The council may grant an extension for such period, not exceeding 3 months, as it considers appropriate.
(3) Only one such extension may be granted.
(4) The council must serve notice of its decision under this section on the owner and the occupants of the HMO.