Lake County, Illinois' Zoning Board of Appeals unanimously recommended an eight-month moratorium on new data centers on August 18, 2026. The proposal is not yet a final county ordinance and applies only to unincorporated Lake County. A data center is a facility that houses computing and network equipment, along with power, cooling and backup systems. The temporary pause would give county officials time to study how such facilities should be regulated.
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What happens next?
The recommendation now goes to the county Board's Planning, Building and Environment Committee. Lake County's official notice does not describe the zoning board's vote as final approval.
If adopted, the moratorium would run until May 2027 unless permanent regulations take effect sooner. Until that happens, the existing interim deferral can delay data-center applications for up to 120 days or until final county board action, whichever comes first. Residents should distinguish between three stages:.
- The zoning board has recommended the moratorium.
- The committee must consider the proposed amendment.
- The temporary restriction becomes operative only after the required county action.
What would the moratorium do?
The draft amendment would temporarily prohibit data centers in unincorporated areas. The county would not consider facilities proposed after the moratorium takes effect until the pause expires or permanent rules are adopted. Lake County's draft Chapter 151 amendment covers more than buildings filled with computer servers.
Its definition includes associated electrical, mechanical, cooling, backup-power and generation infrastructure, as well as multi-building campuses. The pause is intended to give staff time to examine land use, infrastructure, environmental considerations and regulatory practices. It does not establish the permanent standards that may follow that review.
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Where does the proposal apply?
The county proposal covers only unincorporated Lake County—land outside municipal boundaries that is governed directly by the county. It cannot stop or regulate a project located inside a city or village. That distinction matters for nearby residents.
Lake County has said the T5 data-center project was approved exclusively by the Village of Grayslake, so this proposed county moratorium would not govern that municipal approval. Before assuming a proposed facility is covered, residents should determine whether its parcel is in unincorporated territory or within a municipality. The location identifies which local government has zoning authority.
Who is affected now?
The immediate effect is limited because Lake County reports that it has received no data-center proposals for unincorporated areas. The moratorium would primarily affect future applicants seeking county consideration after it becomes effective.
The county also says its current code does not specifically define or regulate data centers. The June 2026 county update shows that officials first authorized an interim application deferral while the zoning process moved forward. Residents following a particular project should ask two concrete questions: Is the property unincorporated, and was the application submitted before or after any moratorium takes effect? Those facts determine whether this county proposal could apply.
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