Wash. Rev. Code » Title 34 · Chapter 34.05
Revised Code of Washington

Wash. Rev. Code § 34.05.443 (2026)

Intervention

✓ current as of May 2026
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(1) The presiding officer may grant a petition for intervention at any time, upon determining that the petitioner qualifies as an intervenor under any provision of law and that the intervention sought is in the interests of justice and will not impair the orderly and prompt conduct of the proceedings.
(2) If a petitioner qualifies for intervention, the presiding officer may impose conditions upon the intervenor's participation in the proceedings, either at the time that intervention is granted or at any subsequent time. Conditions may include:
(a) Limiting the intervenor's participation to designated issues in which the intervenor has a particular interest demonstrated by the petition; and
(b) Limiting the intervenor's use of discovery, cross-examination, and other procedures so as to promote the orderly and prompt conduct of the proceedings; and
(c) Requiring two or more intervenors to combine their presentations of evidence and argument, cross-examination, discovery, and other participation in the proceedings.
(3) The presiding officer shall timely grant or deny each pending petition for intervention, specifying any conditions, and briefly stating the reasons for the order. The presiding officer may modify the order at any time, stating the reasons for the modification. The presiding officer shall promptly give notice of the decision granting, denying, or modifying intervention to the petitioner for intervention and to all parties.
[ 1988 c 288 s 412.]
Notes of Decisions
Cited in 2 cases (1 in the last 5 years), 1999–2023 · leading case: Columbia Gorge Audubon Soc'y v. Klickitat Cnty., 989 P.2d 1260 (Wash. Ct. App. 1999).
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Columbia Gorge Audubon Soc'y v. Klickitat Cnty., 989 P.2d 1260 (Wash. Ct. App. 1999). “RCW 34.05.443(1). In Washington, as in the federal courts and other jurisdictions, the requirements of CR 24(a) are liberally construed to favor intervention.”
Rhett Greenfield, V. Dep't Of Labor & Indus. (Wash. Ct. App. 2023). “” RCW 34.05.443(1). The ACLU is not a party to this appeal.”
— Wash. Rev. Code § 34.05.443(1) — 2 cases
Columbia Gorge Audubon Soc'y v. Klickitat Cnty., 989 P.2d 1260 (Wash. Ct. App. 1999). “RCW 34.05.443(1). In Washington, as in the federal courts and other jurisdictions, the requirements of CR 24(a) are liberally construed to favor intervention.”
Rhett Greenfield, V. Dep't Of Labor & Indus. (Wash. Ct. App. 2023). “” RCW 34.05.443(1). The ACLU is not a party to this appeal.”
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