11. (1) Subject to sub-article (2) and articles 3 and 6, this Part applies to—

(a) works in connection with the design and construction of a new building,

(b) works in connection with the material alteration of—

(i) a day centre,

(ii) a building containing a flat,

(iii) a hotel, hostel or guest building, or

(iv) an institutional building, or

(v) a place of assembly, or

(vi) a shopping centre,

but excluding works to such buildings, consisting solely of minor works,

(c) works in connection with the material alteration of a shop, office or industrial building where—

(i) additional floor area is being provided within the existing building, or

(ii) the building is being subdivided into a number of units for separate occupancy,

(d) works in connection with the extension of a building by more than 25 square metres,

(e) a building as regards which a material change of use takes place,

to which the requirements of Part B of the Second Schedule to the Building Regulations apply.

(2) For the purposes of this Part, the following buildings are exempted—

(a) a single storey building which—

(i) is used exclusively for the storage of materials or products, for the accommodation of plant or machinery or in connection with the housing, care or management of livestock,

(ii) is used solely for the purpose of agriculture, and

(iii) is a building in which the only persons habitually employed are engaged solely in the care, supervision, regulation, maintenance, storage or removal of the materials, products, plant, machinery or livestock in the building,

and which is either attached to another such building or detached from any other building,

(b) a building used as a dwelling other then a flat,

(c) a single storey building used as a domestic garage,

(d) a single storey building (other than one described in (c)) ancillary to a dwelling (such as a summer house, poultry-house, aviary, conservatory, coal shed, garden tool shed or bicycle shed) which is used exclusively for recreational or storage purposes or the keeping of plants, birds or animal for domestic purpose's and is not used for the purposes of any trade or business or for human habitation,

or to works in connection with such a building provided that, after the works are carried out, the building is or continues to be a building referred to in paragraphs (a) to (d).

(3) This Part shall not apply in relation to works carried out in compliance with a notice served under Section 20 of the Fire Services Act 1981 (No. 30 of 1981).