Without limiting the powers of the Court under section 9.46(1), the Court may by order under that section declare that a certificate under this Part (other than an occupation certificate) is invalid if--
(a) proceedings for the order are brought within 3 months after the issue of the certificate, and
(b) the plans and specifications or standards of building work or subdivision work specified in the certificate are not consistent with the development consent for the building work or subdivision work.