If any approval or consent is issued subject to any conditions that will require a variation to the building work, the building contractor must advise the client, by notice, no later than 10 working days after the date the consent is issued, of—
(a)
the building work that will be required to achieve the variation; and
(b)
the effect (ie, the increase or decrease), if any, on the quoted or estimated price for the building work; and
(c)
the effect, if any, on the due date or the estimated due date for completion of the building work.