Building Regulations 2018

in the case of a building permit to re-erect a building, within 12 months after the date of issue of the building permit; or

in the case of a Class 1 or 10 building, within 24 months after the date of issue of the building permit; or

in the case of a swimming pool or spa or any associated barrier or safety equipment—

if the building work is being carried out on an allotment concurrently with other building work that is being carried out on the same allotment, within the period of completion for the other building work referred to in paragraph (a), (b) or (d) (as the case requires); or

in any other case, within 6 months after the building work commences; or

in any other case, within 36 months of the date of issue of the building permit.

If building work is to be completed in more than one stage and more than one building permit is issued in relation to that building work, a reference in subregulation (1) to the date of issue of a building permit is taken to be a reference to the date of issue of the first of those building permits.