(1) To add the owner of a dwellinghouse in a multi-unit complex or stand-alone complex to a claim in respect of the complex under section 26(1), the representative must give the chief executive—
(a) a written notice that the owner wishes the claim to extend to his or her dwellinghouse; and
(b) a copy of a written notice from the owner—
(i) authorising the representative to take action (unless the person concerned is taken to be the representative under section 21(2), in which case that kind of authorisation is not required); and
(ii) authorising invasive testing by an assessor relating to the owner's dwellinghouse.
(2) To add the owner of a dwellinghouse in a multi-unit complex or stand-alone complex to a claim in respect of the complex under section 26(2), the representative must—
(a) apply to the tribunal, in writing, and in a form (if any) approved for the purpose by the chair, for its consent under section 26(2); and
(b) give the tribunal a copy of a written notice from the owner—
(i) authorising the representative to take action (unless the person concerned is taken to be the representative under section 21(2), in which case that kind of authorisation is not required); and
(ii) authorising invasive testing by an assessor relating to the owner's dwellinghouse; and
(c) obtain the tribunal's consent under section 26(2).