Mount Vernon is the fifth Northwest city to pause data centers, before any project is proposed

Mount Vernon's city council voted 6-1 on Wednesday to pause new data center permit applications for 180 days, even though no data center has actually been proposed in the city.

The Aug. 12 vote makes Mount Vernon, a Skagit Valley town, the fifth Pacific Northwest government to pause data center permits this summer, and the third in Washington state. Skagit County, the unincorporated ring around Mount Vernon, adopted its own six-month moratorium on June 1, citing farmland, water supply, floodplain conditions, and the absence of data center-specific rules. La Conner followed at the end of July. Seattle and Spokane have also passed temporary restrictions. (dmnews, Cascadia Daily)

A project that has filed a permit application can "vest" under rules not written for large data centers, locking in those rules for the life of the approval. Once vested, the project is largely insulated from later zoning, water, or power changes, even if the city rewrites its code the next week. A moratorium, by contrast, is a narrow window. A city can refuse new applications, study the land-use, power, and water impacts, and write permanent rules that take effect when the pause ends. The window is narrow: if an application lands first, the pause has nothing to interrupt. Mount Vernon, Skagit County, La Conner, Seattle, and Spokane are all sitting in that gap.

City staff confirmed to the council that no data center permits are currently pending in Mount Vernon, according to the Aug. 12 meeting agenda. The pause will let the planning department study electricity and water demand, the city's ability to host large facilities, stormwater and sewer planning, and development inside the Skagit River's 100-year floodplain, the area the federal government has mapped as having at least a one-percent annual chance of flooding. A public hearing on those topics must be held within 60 days. The measure does not touch existing construction or any project that is already vested.

Council member Andrew Vander Stoep cast the lone no vote. His argument: consumer demand for streaming, cloud, and generative-AI services does not disappear because one city restricts data centers, and a project that cannot site in Mount Vernon may simply site somewhere with weaker environmental protections. It is a leakage argument, and the moratoria in La Conner and Skagit County blunt some of it. The same logic, applied across the whole Skagit watershed, points at the next county over, and the next one after that.

Land-use agencies across the region are reaching for the same narrow lever while the development pipeline is still empty. By contrast, in unincorporated Mobile County, Alabama, Beacon Data Centers' proposed $6 billion Calvert Infrastructure Hub sits on land with no conventional zoning at all. The county still runs commercial site-plan review and issues building permits, so the absence of zoning is a narrower distinction than "no rules." The leverage point in Mobile County looks different from the leverage point in Mount Vernon, and the room to write new rules before a project applies is, in Mount Vernon's case, just wider.

Mount Vernon's 180-day clock started on Wednesday. The 60-day public hearing is the first milestone, and a draft ordinance with a final vote is the next.