Administrative overview · FIPS 17055
Franklin County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Franklin County Supervisor of Assessments Office / County Engineer
For a project in or near Franklin County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
618-435-9800
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Franklin County Supervisor of Assessments, 901 Public Square, Benton, IL 62812
Operating hours
N/A; the official permit information does not publish office hours
Review expectation
Ask the agency for its current review estimate
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Franklin County
Who handles permitting for this jurisdiction?
Franklin County Supervisor of Assessments Office / County Engineer is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
No verified online portal was located in the reviewed public materials. Contact 618-435-9800 and request the current application route before preparing a final submittal.
How long might review take?
A typical review timeline was not verified. Ask the agency for its current completeness and review estimate.
How are inspections scheduled?
The official permit form does not publish an inspection-booking procedure. Permits are submitted to the Supervisor of Assessments Office and approved by the County Engineer; contact 618-435-9800 for current instructions.
Which codes and exemptions should I review?
N/A for a current 2026 code edition. The official county permit information states that permits are approved by the County Engineer; applicable Illinois state and local requirements also govern. The official county permit sheet requires permits for permanent structures, additions, mobile/manufactured homes, and permanently affixed decks or porches. Portable buildings, portable carports, and other portable structures smaller than 12 by 14 feet do not require a permit. A separate permit is required for each structure.