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§ 02
When a permit is required
Permit triggers and exempt work for Cass County
Permit required before starting a project
Routine maintenance or repair, including repainting or reroofing
Alterations under $300 replacement value
Construction of a service connection to a municipally owned and operated utility
Agricultural use, except where specifically regulated elsewhere
- Exempt Routine maintenance or repair, including repainting or reroofing
- Exempt Alterations under $300 replacement value
- Exempt Construction of a service connection to a municipally owned and operated utility
- Exempt Agricultural use, except where specifically regulated elsewhere
Required documents
- Application in triplicate
- Site description
- Owner/applicant details
- Survey
- Utility plans
- Other required exhibits
- Building code
- County zoning ordinance references compliance with applicable local, county, and state rules; no clearly published county building code adoption summary found for all work types
- Permit validity
- Work not substantially started within 90 days requires a new permit under the zoning ordinance.
§ 03
Application process
Application → plan check → issuance → inspection → final
- 01 Start with the Cass County Zoning Officer before commercial or residential work.
- 02 Submit the zoning/building permit application in triplicate on county forms.
- 03 Include site description, owner/applicant details, survey, utility plans, and other required exhibits.
- 04 County review occurs through the zoning office; the zoning officer issues the permit.
Source: Cass County Zoning Office / Zoning Enforcement Officer ↗
§ 04
Fee schedule
Cass County building permit fees
Fee type
Amount
01
Permit fee formula
Published fees were found for special zoning programs only, not a general building permit schedule
02
Penalty (no permit)
County zoning ordinance states failure to obtain a permit may result in a fine; no published reinspection schedule found
§ 05
Required inspections
Scheduling and sequence
- Inspection hours
- County office hours on the zoning page are 8:30 a.m. to 5:00 p.m.
§ 06
Frequently asked
Common questions about unincorporated Cass County permits
01 Do I need a building permit in unincorporated Cass County, IL? ▸
Permit required before starting a project
02 How much does a building permit cost in unincorporated Cass County, IL? ▸
Building permit fees in unincorporated Cass County, IL are set by the local building department and vary by project type and valuation. Fees are calculated as: Published fees were found for special zoning programs only, not a general building permit schedule.
03 How do I apply for a building permit in unincorporated Cass County, IL? ▸
To apply for a building permit in unincorporated Cass County, IL, follow these steps: 1. Start with the Cass County Zoning Officer before commercial or residential work. 2. Submit the zoning/building permit application in triplicate on county forms. 3. Include site description, owner/applicant details, survey, utility plans, and other required exhibits. 4. County review occurs through the zoning office; the zoning officer issues the permit.
04 What work is exempt from building permits in unincorporated Cass County, IL? ▸
Not all construction work requires a permit in unincorporated Cass County, IL. The following work is generally exempt: Routine maintenance or repair, including repainting or reroofing; Alterations under $300 replacement value; Construction of a service connection to a municipally owned and operated utility; Agricultural use, except where specifically regulated elsewhere. When in doubt, confirm with the local building department before starting work.
last verified April 2026
source Cass County Zoning Office / Zoning Enforcement Officer ↗
entry id permits/illinois/cass/unincorporated
Educational reference. Permit rules and fees change — confirm current requirements directly with Cass County Zoning Office / Zoning Enforcement Officer before applying. Jaspector is not legal advice.