Development in Illinois

Development guides and official resources for Illinois State and all cities within Illinois, with Chicago-area specifics where applicable.

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Getting Started

Review the Development hub, read the guides, and contact officials linked under Official Resources. Budget time for permits and inspections.

Agencies

Agencies vary by city/county. See the Resources & Agencies section and Official Links per guide.

Timelines

Timeframes differ across jurisdictions and scope. Plan several weeks for reviews and inspections in metro areas.