Wash. Rev. Code » Title 58 · Chapter 58.04
Revised Code of Washington

Wash. Rev. Code § 58.04.020 (2025)

Suit to establish lost or uncertain boundaries—Mediation may be required

✓ laws through the 2025 session: 2026 session laws are not yet included
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(1) Whenever the boundaries of lands between two or more adjoining proprietors have been lost, or by time, accident or any other cause, have become obscure, or uncertain, and the adjoining proprietors cannot agree to establish the same, one or more of the adjoining proprietors may bring a civil action in equity, in the superior court, for the county in which such lands, or part of them are situated, and that superior court, as a court of equity, may upon the complaint, order such lost or uncertain boundaries to be erected and established and properly marked.
(2) The superior court may order the parties to utilize mediation before the civil action is allowed to proceed.
[ 1996 c 160 s 8; 1886 p 104 s 1; RRS s 947.]
Notes of Decisions
Cited in 6 cases (1 in the last 5 years), 1955–2025 · leading case: Reitz v. Knight, 814 P.2d 1212 (Wash. Ct. App. 1991).
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Reitz v. Knight, 814 P.2d 1212 (Wash. Ct. App. 1991). “In his answer, Knight counterclaimed for a boundary determination in accordance with the Sprout survey, for an equitable boundary determination under RCW 58.04.020, or for adverse possession of *579 the 2.”
Booten v. Peterson, 288 P.2d 1084 (Wash. 1955). “, §§ 947, 948, and 949 (See RCW 58.04.020 et seq.), prayed for the appointment of a commission to determine the location of the boundary line.”
Skov v. MacKenzie-Richardson, Inc., 296 P.2d 521 (Wash. 1956). “RCW 58.04.020, 58.04.030]. The respondents are the owners of the northwest quarter of section 8, and the appellant is the owner of the northeast quarter of section 7, township 15 north, range 38 east, W.”
Faubion v. Elder, 301 P.2d 153 (Wash. 1956). “The judgment and decree provided that a commission, appointed by the court, should survey, erect, and properly establish the boundary line between the two quarter sections in accordance with RCW 58.04.020 et seq. Defendants have appealed.”
Stewart v. Hoffman, 390 P.2d 553 (Wash. 1964). “Appellants also allege a “lost boundary” under RCW 58.04.020. They put on no evidence of a lost boundary.”
Linda Omori Et Ano. V. Theresa Mcdonald, No. 87330-0 (Wash. Ct. App. Sept. 22, 2025). “” RCW 58.04.020. Here, the boundary lines at issue are not lost, obscure, or uncertain.”
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