16.—(1) An enforcement authority may require an owner who appears to it to be or to have been subject to the duty under regulation 5 in relation to a building to produce for inspection a copy of the energy performance certificate for that building.
(2) The power conferred by paragraph (1) includes power–
(a)to require the production in a legible documentary form of any energy performance certificate which is held in electronic form, and
(b)to take copies of any energy performance certificate produced for inspection.
(3) A requirement under this regulation may not be made more than 6 months after the last day on which the owner concerned appeared to the enforcement authority to be subject to the duty under regulation 5 in relation to the building.
(4) An owner subject to a requirement under this regulation must comply with it within the period of 7 days beginning with the day after that on which it is made.
(5) An owner is not required to comply with the requirement if the owner has a reasonable excuse for not complying.