(1) When the land use decision being reviewed was made by a quasi-judicial body or officer who made factual determinations in support of the decision and the parties to the quasi-judicial proceeding had an opportunity consistent with due process to make a record on the factual issues, judicial review of factual issues and the conclusions drawn from the factual issues shall be confined to the record created by the quasi-judicial body or officer, except as provided in subsections (2) through (4) of this section.

(2) For decisions described in subsection (1) of this section, the record may be supplemented by additional evidence only if the additional evidence relates to:

(a) Grounds for disqualification of a member of the body or of the officer that made the land use decision, when such grounds were unknown by the petitioner at the time the record was created;

(b) Matters that were improperly excluded from the record after being offered by a party to the quasi-judicial proceeding; or

(c) Matters that were outside the jurisdiction of the body or officer that made the land use decision.

(3) For land use decisions other than those described in subsection (1) of this section, the record for judicial review may be supplemented by evidence of material facts that were not made part of the local jurisdiction's record.

(4) The court may require or permit corrections of ministerial errors or inadvertent omissions in the preparation of the record.

(5) The parties may not conduct pretrial discovery except with the prior permission of the court, which may be sought by motion at any time after service of the petition. The court shall not grant permission unless the party requesting it makes a prima facie showing of need. The court shall strictly limit discovery to what is necessary for equitable and timely review of the issues that are raised under subsections (2) and (3) of this section. If the court allows the record to be supplemented, the court shall require the parties to disclose before the hearing or trial on the merits the specific evidence they intend to offer. If any party, or anyone acting on behalf of any party, requests records under chapter 42.56 RCW relating to the matters at issue, a copy of the request shall simultaneously be given to all other parties and the court shall take such request into account in fashioning an equitable discovery order under this section.