Zoning in Washington County, Oregon: The 2023-2024 Semiconductor UGB Fight

Why Oregon created a special, time-limited UGB bypass in 2023

Oregon's ordinary process for expanding an urban growth boundary is deliberately slow: it typically requires a city or Metro to demonstrate land need decades out, coordinate with DLCD, and survive potential appeals to the Land Use Board of Appeals, a process that can take years. In 2023, facing genuine competitive pressure from other states actively courting large semiconductor manufacturing investment (in the wake of the federal CHIPS Act and a broader national push to reshore chip production), the Oregon Legislature passed Senate Bill 4, giving the governor a specific, time-limited power: the authority, through the end of 2024, to designate particular sites for large-scale semiconductor and industrial development outside the normal UGB expansion process entirely.

This was a genuinely unusual move in a state whose entire land-use identity is built around a deliberately slow, statewide-goal-driven UGB process -- and Washington County, as the physical home of Oregon's "Silicon Forest" semiconductor cluster around Hillsboro, was the obvious place this authority would be used first.

The Hillsboro-adjacent site: 373 acres moved forward under SB 4

Governor Kotek used the new SB 4 authority to move a 373-acre site adjacent to Hillsboro toward designation for semiconductor development -- a direct, concrete use of the bypass power the legislature had just created. For a land buyer, a parcel anywhere near this designated site should be evaluated with the understanding that its immediate surroundings were, as of 2023-2024, in the middle of an active, high-priority industrial-development push backed by a specific state statute, not an ordinary rezone application working through the county's normal process on its usual timeline.

The Cornelius site: blocked not by opposition, but by a rural-reserve designation

A separate, competing proposal favored by some local officials would have used a roughly 430-acre site near Cornelius for similar semiconductor development. That site ran into a specific, structural obstacle rather than simple political opposition: the land had already been designated a "rural reserve" under the Portland region's urban/rural reserves framework -- a designation, made years earlier through a separate multi-jurisdictional process, that explicitly sets aside land as off-limits to urbanization for a long planning horizon (typically decades), as a counterpart to "urban reserves" that are pre-identified as the region's preferred future growth areas.

That distinction matters for any land buyer trying to read Washington County's semiconductor-development story as a signal about nearby land values. A parcel's mere proximity to a place like Cornelius, or even genuine local political interest in developing it, does not mean it's actually eligible for urbanization -- a rural-reserve designation is a specific, durable legal status that a site either has or doesn't, and it takes far more than a single legislative session's UGB-bypass authority to change it. Confirm a specific parcel's urban-reserve, rural-reserve, or undesignated status directly with Metro before drawing any conclusions from general proximity to Hillsboro's semiconductor cluster.

What this means for evaluating land in the county

1. Confirm a specific parcel's status directly with Metro's urban growth boundary and reserves lookup tools -- inside the UGB, an urban reserve, a rural reserve, or undesignated rural/resource land are four genuinely different statuses with very different development implications.
2. For land near the Hillsboro-adjacent 373-acre site, confirm the current status of that SB 4 designation and any resulting development directly with Washington County and the City of Hillsboro, since the governor's bypass authority itself expired December 31, 2024.
3. Do not assume a rural parcel near Cornelius, North Plains, or elsewhere in the county is a plausible future UGB-expansion candidate simply because it sits near Hillsboro's semiconductor cluster -- some of the most logistically convenient sites were specifically walled off as rural reserves years in advance.
4. For a parcel with no connection to the semiconductor-siting story at all, this episode is still useful context: it shows that Washington County's rural/urban boundary, more than in almost any other Oregon county, is subject to genuine, high-stakes state-level policy attention -- confirm current zoning and reserve status directly rather than relying on an older map.