dissenting.
The order sought to be reviewed by LUBA fulfilled the requirements of LUBA’s definitional rule, OAR 661-10-010(3), and had become final, ORS 197.830(7), by the terms of the Multnomah County ordinance governing that local body’s orders. Therefore, petitioner’s notice of intent to appeal was timely and LUBA erred in ruling that it was not. Accordingly, I dissent.
I do not agree that LUBA’s rule prescribes when a decision becomes final, ORS 197.830(7), thereby triggering the commencement of the 21-day period within which LUBA review must be sought. Even if that rule purports to do so, I do not believe LUBA has that authority or the authority to override a local body’s clear, unambiguous and reasonable ordinance that states precisely when its orders become final.
ORS 197.830(7), so far as relevant, provides:
*453“A notice of intent to appeal a land use decision shall be filed not later than 21 days after the date the decision sought to be reviewed becomes final.” (Emphasis supplied.)
Multnomah County has enacted an ordinance, MCC 11.15.8280, subsections (C) and (D) of which provide precisely when a Board order becomes final. Those subsections provide:
“(C) Written findings of fact and conclusions, based upon the record, shall be signed by the Presiding Officer of the Board and filed with the Clerk of the Board with a decision within five business days following announcement of the decision under subsection (B) above.
“(D) The Board’s decision shall be final at the close of business on the tenth day after the decision, findings of fact and conclusions have been filed under subsection (C) above, unless the Board on its own motion grants a rehearing under MCC .8285(A).”
It is clear that, under the ordinance, a decision does not become final until ten days after the decision, including findings and conclusions, has been signed by the presiding officer of the Board and filed with the clerk. It is equally clear that, during the ten-day period, the decision may be modified or withdrawn by the Board, because it has not become final.
LUBA held that the county may not provide when its decision becomes final, because of OAR 661-10-010(3), adopted by LUBA as a definition of terms used in succeeding parts of OAR chapter 661. It provides:
“ ‘Final decision or determination’ means a decision or determination which has been reduced to writing and which bears the necessary signatures of the governing body.”
As I read the definition, it describes what characteristics a local decision must have before it may be considered final and subject to review. As so read, the rule clarifies a subject that has been very confusing in the past — whether oral decisions announced by the Board at the conclusion of a hearing, or letter decisions directed to the parties following a hearing, or written decisions signed by a majority, but not all, commissioners, are “final” and reviewable orders. LUBA’s definition clarifies and resolves those ambiguous situations. It does not purport to deal with any filing or notice requirement; accordingly, if it were intended to define the date on which the period within which review must be sought commences, it is *454incomplete, leaving the ambiguity that has prevailed when a signed written decision is deposited somewhere in the bureaucratic machinery that is not clearly prescribed by ordinance, and the parties are not notified.
In my view, the rule in question does not, on its face, purport to prescribe when a local order becomes final. All that it purports to do is to provide a definition prescribing minimum characteristics that a decision must have before it may be considered to have become final for purposes of review. Although LUBA has authority to do that, its attempt here to extend that definition by interpretation (with substantial gloss) to prescribe a jurisdictional fact exceeds its authority. See McPherson v. Employment Division, 285 Or 541, 591 P2d 1381 (1979). Even if the definition specifically stated what LUBA has read into it, I think it would exceed LUBA’s limited authority to “adopt rules governing the conduct of review proceedings before it * * ORS 197.820(4). The time from which the appeal period starts to run is specifically provided by ORS 197.830(7). That period commences on the date “the decision sought to be reviewed becomes final.” Here, the county has adopted an ordinance that provides when the Board’s decisions become final. LUBA gave some effect to the ordinance by holding that the decision became final when it was filed pursuant to subsection (C) of the ordinance, although LUBA’s rule does not require any filing or notice of the decision.
However, LUBA reasoned that if the ten-day period provided in the ordinance were permitted to stand, the county would be extending the period within which LUBA review may be sought. That is post hoc ergo propter hoc reasoning: the conclusion is correct only if the decision had become final when it was filed, and under the ordinance it had not. Even accepting LUBA’s reasoning, however, the county could accomplish the same result (and stay within the precise language of LUBA’s rule) by providing that the written decision shall not be signed until ten days after it is filed, at which time it becomes final.
The majority states that a local body may not alter LUBA’s jurisdiction by the enactment of ordinances that purport to expand or limit LUBA’s authority, citing Lyke v. Lane County, 70 Or App 82, 688 P2d 411 (1984), (70 Or at 451). *455Although that proposition is valid, it has no application here. It is equally valid to say that LUBA may not, by rule, expand or limit its jurisdiction. In Lyke, we held that the petitioner was obligated to seek Board review of a hearing officer’s order, because a county ordinance permitted such review, albeit discretionary — in other words the petitioner had to exhaust his local remedies before the order would become final and subject to review. On the other hand, we also held that the ordinance that authorized agency review without a Board appeal was invalid, because it violated ORS 197.825(2)(a), which requires a petitioner to exhaust a local remedy available by right. To the extent that Lyke has any relevance here, it holds that a county may postpone LUBA review of an otherwise final order by permitting discretionary Board review.
In my opinion, petitioner’s notice of intent to appeal was timely. I would reverse, and, therefore, dissent.