56. A town planner who advertises his rates or professional fees shall:(1) establish fixed rates or fees;
(2) specify the nature and extent of services included in the rates or fees;
(3) indicate whether or not disbursements or additional costs are included in the rates or fees;
(4) indicate whether additional services which are not included in the rates or fees might be required;
(5) indicate whether the taxes are included in the rates or fees.
These particulars shall be given in a manner that can be understood by persons having no particular knowledge of the field of town planning.
A town planner shall keep those rates or fees in effect for a minimum period of 90 days after the date they were last broadcast or published.
A town planner and a client may however agree upon rates or fees lower than those broadcast or published.