jaspector
§ IL Mason County
County building permits

Unincorporated Mason County

How to apply for a building permit in unincorporated Mason County, Illinois. Permit authority, application steps, fees, and inspection requirements.

Last verified
April 2026
On this page 5
§ 01

Permit authority

Mason County Zoning / Code Enforcement

Street address
County Courthouse, 125 N Plum, Havana IL 62644
Coverage
Unincorporated Mason County, including countywide zoning and related building-permit review under county ordinances
§ 02

When a permit is required

Permit triggers and exempt work for Mason County

county ordinance says a building permit is required prior to commencement of construction on any parcel in Mason County except as otherwise set forth.

Routine maintenance or repair of buildings, structures, or equipment such as repairing or re-roofing a building
Alterations to existing buildings at a cost of less than $1,000
Construction of a service connection to a municipally owned and operated utility
  • Exempt Routine maintenance or repair of buildings, structures, or equipment such as repairing or re-roofing a building
  • Exempt Alterations to existing buildings at a cost of less than $1,000
  • Exempt Construction of a service connection to a municipally owned and operated utility
Required documents
  • application form, owner/applicant/contractor details, site description, plat of survey or suitable drawing, and utility / septic / well information when relevant.
Permit validity
if work is not substantially started within 180 days, a new permit is required; work authorized by permit must be completed within 24 months, with one possible 12-month extension.
Owner-builder
not expressly published in the county material reviewed.
Contractor requirements
not expressly published in the county material reviewed; Illinois statewide trade licensing still applies for plumbing and electrical.
§ 03

Application process

Application → plan check → issuance → inspection → final

  1. 01
    Confirm whether the work is exempt under county ordinance.
  2. 02
    Complete the zoning permit application on forms furnished by the Zoning Enforcement Officer.
  3. 03
    Include required materials where applicable: applicant/owner/architect/engineer/contractor info, site description, plat of survey or suitable drawing, sewage plan if no municipal sewer, water supply plan if no municipal water.
  4. 04
    File with the County Zoning Enforcement Officer.
  5. 05
    County reviews and issues, or denies/requires revision.
  6. 06
    For special uses, the application is referred to the Zoning Board.

Source: Mason County Zoning / Code Enforcement ↗

§ 04

Required inspections

Scheduling and sequence

How to schedule
  • not publicly detailed beyond office filing and direct contact with zoning office (contact)
Inspection hours
county courthouse hours are Monday-Friday 8:00 am to 4:00 pm except holidays

Typical sequence: not publicly detailed

not publicly detailed

§ 05

Frequently asked

Common questions about unincorporated Mason County permits

01 Do I need a building permit in unincorporated Mason County, IL?
county ordinance says a building permit is required prior to commencement of construction on any parcel in Mason County except as otherwise set forth.
02 How do I apply for a building permit in unincorporated Mason County, IL?
To apply for a building permit in unincorporated Mason County, IL, follow these steps: 1. Confirm whether the work is exempt under county ordinance. 2. Complete the zoning permit application on forms furnished by the Zoning Enforcement Officer. 3. Include required materials where applicable: applicant/owner/architect/engineer/contractor info, site description, plat of survey or suitable drawing, sewage plan if no municipal sewer, water supply plan if no municipal water. 4. File with the County Zoning Enforcement Officer. 5. County reviews and issues, or denies/requires revision. 6. For special uses, the application is referred to the Zoning Board.
03 What work is exempt from building permits in unincorporated Mason County, IL?
Not all construction work requires a permit in unincorporated Mason County, IL. The following work is generally exempt: Routine maintenance or repair of buildings, structures, or equipment such as repairing or re-roofing a building; Alterations to existing buildings at a cost of less than $1,000; Construction of a service connection to a municipally owned and operated utility. When in doubt, confirm with the local building department before starting work.
04 How do I schedule a building inspection in unincorporated Mason County, IL?
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Mason County, IL via: not publicly detailed beyond office filing and direct contact with zoning office.
last verified April 2026 source Mason County Zoning / Code Enforcement ↗ entry id permits/illinois/mason/unincorporated

Educational reference. Permit rules and fees change — confirm current requirements directly with Mason County Zoning / Code Enforcement before applying. Jaspector is not legal advice.