Franklin County, IL — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Supervisor of Assessments / County Engineer Review

Street address

100 Public Square, Benton, IL 62812

Phone

(618) 435-9800

Coverage

County-wide unincorporated areas and, per county materials, some incorporated places without their own zoning or ordinances.

Website

Department website

§ 02

When a permit is required

Permit triggers and exempt work for Franklin County

A permit is required before new structure construction or alteration of any existing structure.

Scope of work

Permit?

Agricultural uses of land or buildings are exempt from county filing fee.

Exempt

Portable structures smaller than 12 x 14, including Cook Portable Buildings and portable carports, do not require a permit.

Exempt

Exempt Agricultural uses of land or buildings are exempt from county filing fee.
Exempt Portable structures smaller than 12 x 14, including Cook Portable Buildings and portable carports, do not require a permit.

Required documents

Permit form
Drawing of improvement with dimensions

Source: Supervisor of Assessments / County Engineer Review ↗

§ 03

Application process

Typical processing: Permit issuance is within 30 days after all facts and pertinent data are properly presented.

01

Obtain permit from Supervisor of Assessments.
02

Submit application and sketch/drawing of the improvement.
03

County Engineer approves permit after review.
04

Pay fees if any and begin work only after permit issuance.

Typical processing time: Permit issuance is within 30 days after all facts and pertinent data are properly presented.

Source: Supervisor of Assessments / County Engineer Review ↗

§ 04

Fee schedule

Franklin County building permit fees

Fee type

Amount

Minimum permit fee

$50

Permit fee formula

Flat $50 permit fee

Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.

§ 05

Required inspections

Scheduling and sequence

Typical sequence: Permit approval by County Engineer, then inspections were not described in the reviewed sources.

§ 06

Frequently asked

Common questions about unincorporated Franklin County permits

01 Do I need a building permit in unincorporated Franklin County, IL? ▸

A permit is required before new structure construction or alteration of any existing structure.

02 How much does a building permit cost in unincorporated Franklin County, IL? ▸

Building permit fees in unincorporated Franklin County, IL are set by the local building department and vary by project type and valuation. The minimum permit fee is $50. Fees are calculated as: Flat $50 permit fee.

03 How do I apply for a building permit in unincorporated Franklin County, IL? ▸

To apply for a building permit in unincorporated Franklin County, IL, follow these steps: 1. Obtain permit from Supervisor of Assessments. 2. Submit application and sketch/drawing of the improvement. 3. County Engineer approves permit after review. 4. Pay fees if any and begin work only after permit issuance.

04 How long does it take to get a building permit in unincorporated Franklin County, IL? ▸

Building permit processing times in unincorporated Franklin County, IL typically run Permit issuance is within 30 days after all facts and pertinent data are properly presented.. Timelines can vary based on project complexity and current department workload.

05 What work is exempt from building permits in unincorporated Franklin County, IL? ▸

Not all construction work requires a permit in unincorporated Franklin County, IL. The following work is generally exempt: Agricultural uses of land or buildings are exempt from county filing fee.; Portable structures smaller than 12 x 14, including Cook Portable Buildings and portable carports, do not require a permit.. When in doubt, confirm with the local building department before starting work.

last verified April 2026 source Supervisor of Assessments / County Engineer Review ↗ entry id permits/illinois/franklin/unincorporated

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with Supervisor of Assessments / County Engineer Review before applying. Jaspector is not legal advice.

Unincorporated Franklin County