Section 64.50.030 - List of known construction defects-Requirements-Time limits(1) In every action brought against a construction professional, the claimant, including a construction professional asserting a claim against another construction professional, shall file with the court and serve on the defendant a list of known construction defects in accordance with this section.(2) The list of known construction defects shall contain a description of the construction that the claimant alleges to be defective. The list of known construction defects shall be filed with the court and served on the defendant within thirty days after the commencement of the action or within such longer period as the court in its discretion may allow.(3) The list of known construction defects may be amended by the claimant to identify additional construction defects as they become known to the claimant.(4) The list of known construction defects must specify, to the extent known to the claimant, the construction professional responsible for each alleged defect identified by the claimant.(5) If a subcontractor or supplier is added as a party to an action under this section, the party making the claim against such subcontractor or supplier shall serve on the subcontractor or supplier the list of construction defects in accordance with this section within thirty days after service of the complaint against the subcontractor or supplier or within such period as the court in its discretion may allow.