Section 45 of the Principal Act is amended as follows:

(a) by omitting "a building contractor, and an owner," from the definition of dispute and substituting "an owner and either a building contractor or a prescribed licensed professional" ;

(b) by omitting "owner;" from paragraph (c) of the definition of dispute and substituting "owner; or" ;

(c) by inserting the following paragraph after paragraph (c) in the definition of dispute :

(d) another matter relating to residential building work, or residential building work contracts, that has been prescribed for the purposes of this definition;

(d) by omitting "dispute." from paragraph (c) of the definition of party and substituting "dispute;" ;

(e) by inserting the following definition after the definition of party :

prescribed licensed professional , in respect of a class of building services work within the meaning of the Occupational Licensing Act 2005 , means a person of a class of persons who are prescribed as the licensed professionals for that class of building services work.