Section 52 of the Principal Act is amended as follows:

(a) by omitting from paragraph (c)(iii) "building." and substituting "building; or" ;

(b) by inserting the following paragraphs after paragraph (c) :

(d) has a potential for a conflict of interest between his or her duties to owners or the public and his or her personal or business interests; or

(e) has not been engaged in writing by an owner.