Section 206 of the Principal Act is amended as follows:(a) by omitting paragraph (b) from subsection (1) and substituting the following paragraph:(b) approved by (i) the relevant permit authority, if the schedule of maintenance only relates to plumbing work performed on, or a plumbing installation installed in, the premises that include the building; or(ii) a building surveyor, in any other case.(b) by omitting from subsection (2) "building surveyor" twice occurring and substituting "permit authority, or building surveyor," ;(c) by omitting from subsection (3) "building surveyor" and substituting "permit authority, or building surveyor, as applicable" ;(d) by omitting from subsection (4) "building surveyor" and substituting "permit authority, or building surveyor, as applicable" .