275.This section applies where steps have not been taken to comply with a notice of unauthorised development within the stipulated period for compliance. In such a case, the relevant local planning authority may enter the relevant land and carry out the works required in the notice and recover any expenses reasonably incurred in doing so from the owner of the land. This section provides for such expenses and other amounts to be deemed to be incurred or paid for the use and at the request of the person found guilty of the offence under section 160 or 161. The section contains a power to apply certain provisions of the Public Health Act 1936. It also provides that a person commits an offence if the person wilfully obstructs a person acting under powers conferred by the section.