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Multnomah County, OR Historic Preservation: Historic-Cultural Monuments (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Demolition hold
120 days from filing
Applies to
buildings zoned HP overlay
Review body
Planning Commission, then Board
Decision type
Type IV, de novo hearing
Coverage
unincorporated county only, not Portland

Summary

Multnomah County holds demolition permits for any building the county has designated under its Heritage Preservation (HP) overlay for 120 days while the Planning Commission and Board of Commissioners review whether the structure can be saved.

City-specific rules exist: Portland, and Gresham have their own historic-cultural monuments rules that differ from Multnomah County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

An application for a permit to remove or demolish a building or structure described in this Section shall be subject to the following:

(1) The permit shall not be issued for 120 days following the date of filing, unless otherwise authorized by the Board under Subsection (C)(7) of this Section.

(2) The permit application shall be considered a Type IV decision to be initiated by the record owner or the owner's agent.

(3) Except as otherwise provided in this Subsection (C) of this Section, the application shall be subject to the

applicable provisions of Part 1 of this Zoning Code.

(4) A hearing on the application shall be held by the Planning Commission.

(5) The decision of the Planning Commission shall be in the form of a recommendation to the Board.

(a) The Planning Commission may recommend measures to preserve the building or structure, with or without conditions, including by purchase, trade, relocation or by approval of a change of use notwithstanding the use limitations of the base zone;

(b) The Planning Commission may recommend removal or demolition of the building or structure based upon a finding that practical preservation measures are inadequate or unavailable.

(c) The Planning Commission recommendation shall be based upon findings in relation to the applicable policies of the Comprehensive Plan.

(6) The Planning Commission decision shall be submitted to the Clerk of the Board by the Planning Director not later than ten days after the decision is announced.

Full Breakdown

Under MCC § 39.8450, a building, structure, or premises the county has classified HP under §§ 39.5100 through 39.5170 cannot be torn down on demand. An application to remove or demolish it is a Type IV land use decision: the Planning Commission holds a public hearing and recommends either preservation measures (purchase, trade, relocation, or an approved change of use) or removal, and the Board of County Commissioners then holds its own de novo hearing and makes the final call. The Building Official cannot issue the demolition permit until 120 days after filing unless the Board authorizes it sooner. This applies only to unincorporated county land. Portland, Gresham, Troutdale, Fairview, and Wood Village enforce their own separate preservation rules.

Violations & Fines

Demolishing or materially altering an HP-designated building without going through this review is a zoning violation under MCC § 39.1510, exposing the owner to a Notice of Violation, fines, and required corrective action under the county's Enforcement Code.

Frequently Asked Questions

Does this cover my house in Portland?
No. Portland runs its own historic preservation code. Multnomah County's HP overlay and § 39.8450 permit process apply only to unincorporated county land.
Can an owner demolish a designated historic building right away?
No. MCC § 39.8450(C)(1) blocks the demolition permit for 120 days after filing so the Planning Commission and Board can review preservation options first.

Sources & Official References

Other rules in Multnomah County

All Multnomah County rules

Compare Multnomah County to another location·View the Oregon historic preservation overview

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