260BSeller to notify material change to matter in disclosure

260B Seller to notify material change to matter in disclosure statement disclosure statement under section 260; and (b) the seller becomes aware of a material change to a matter set out in the disclosure statement. (2) The seller must give the buyer a notice setting out the details of the material change (a disclosure update notice), in writing— (a) no later than 10 working days after the end of the calendar quarter in which the seller first becomes aware of the material change; but (b) at least 21 days before the day the buyer is required to complete the contract. (3) The disclosure update notice must contain reasonably sufficient information to enable the buyer to work out whether the buyer will suffer significant prejudice because of the material change. (4) For this section, a seller is taken to be aware of a material change to a matter in the disclosure statement if the seller has actual knowledge, or ought reasonably to have knowledge, of the change. calendar quarter means a 3-month period ending on the last day of March, June, September or December.