Kane County is a populous collar county west of DuPage at about 526,000 residents, straddling the Fox River and anchored by Aurora, Elgin and the county seat of Geneva. Its Building & Zoning Division, part of the county Development Department, issues building permits for the unincorporated areas and for the villages of Big Rock, Kaneville and Virgil, from the Government Center, 719 S. Batavia Avenue, Building A, 4th Floor, Geneva (630-232-3485, Monday to Friday 8:30am to 4:30pm), with applications filed through the Kane County Web Portal. Aurora, Elgin, St. Charles and the county’s other municipalities run their own departments.
This guide covers the county’s unincorporated-area role, the adopted code, the statewide layers, and where municipal work goes instead.
This guide covers unincorporated Kane County and the villages of Big Rock, Kaneville and Virgil, which the county permits. Aurora, Elgin, St. Charles and the other municipalities each run their own permitting.
Kane County’s largest cities — Aurora and Elgin — run their own departments, so much of the county’s development is municipal. The Building & Zoning Division is the authority for unincorporated areas, combining permitting with development and Fox River corridor considerations. Confirm whether the parcel is unincorporated county or inside a municipality before design.
What requires a building permit in Kane County?
Permit required
- New commercial, multi-family and residential construction, additions and change of occupancy
- Structural alterations, load-bearing changes, foundations, decks and retaining walls
- Electrical work — services, panels, circuits, solar and EV charging — under the adopted electrical code
- Plumbing under the statewide Illinois Plumbing Code, tied to a licensed plumber
- Mechanical and HVAC change-outs, and work affecting the energy envelope
- Re-roofing above the exempt scope, pools, signs, and demolition
Often exempt
- Minor repairs and maintenance replacing materials in kind
- Small accessory structures below the local threshold, where zoning allows
- Painting, flooring, cabinetry and other finish work
- Like-for-like fixture or appliance swaps with no alteration to wiring or piping
Short on time to read all of this?
Get a free quote →Because the code edition and its amendments are set locally, the exempt list and thresholds differ from one jurisdiction to the next — a project waved through in one town needs a full permit set in the next. An exemption from a building permit is never an exemption from zoning, the statewide energy or plumbing codes, or an electrical or plumbing permit. Confirm scope with the Building & Zoning Division before work starts.
The statewide layers that apply everywhere
Three Illinois codes apply statewide: the Illinois Energy Conservation Code, which applies even where a town does not actively enforce it; the Illinois Plumbing Code, from the Department of Public Health, which also licenses plumbers (a local government may adopt a stricter plumbing code, and Chicago has its own plumbing and energy codes and licenses its own plumbers); and the Illinois Accessibility Code. In unincorporated Kane County, the Building & Zoning Division administers the county’s adopted building code alongside development and floodplain review along the Fox River; the statewide Illinois codes apply on top.
Illinois leaves building codes to local government, but since 1 January 2025 any local code must regulate structural design at least as strictly as baseline editions of the International Building, Existing Building and Residential Codes, and where no code was adopted the statute sets minimums for commercial buildings and new homes (Public Act 103-0510). Illinois codes and the statewide baseline
Who handles permitting in Kane County?
The Building & Zoning Division handles permitting and inspections for unincorporated Kane County and the villages of Big Rock, Kaneville and Virgil; the other municipalities handle their own.
| Detail | Information |
|---|---|
| Authority | Kane County Development Department, Building & Zoning Division, Government Center, 719 S. Batavia Avenue, Building A, 4th Floor, Geneva, IL 60134 · 630-232-3485 (inspections 630-232-5867) · Monday to Friday 8:30am to 4:30pm |
| Seat | Geneva |
| Serves | Unincorporated Kane County and the villages of Big Rock, Kaneville and Virgil |
| Corridor | Fox River, with floodplain considerations |
| Code | County-adopted building code, plus statewide Illinois codes |
| Plumbing | Statewide Illinois Plumbing Code and state-licensed plumbers |
| Registration | Contractors listed on the permit application, with copies of roofing, plumbing (055) and electrical licences |
| Municipal work | Handled by the city or village, not the county |
The Building & Zoning Division is the authority for unincorporated Kane County and the villages of Big Rock, Kaneville and Virgil, combining building permitting with development review and Fox River floodplain considerations. Aurora and Elgin — among the largest cities in the state — and the other municipalities run their own departments, so much of Kane County’s development is municipal. Confirm the jurisdiction from the parcel first.
Not sure this scope needs a permit?
Get a free quote →The county administers its adopted building code; the statewide Illinois energy, plumbing and accessibility codes apply on top, with plumbing tied to a state-licensed plumber.
In 2025, building permits issued in unincorporated Kane County authorized 42 new privately owned housing units, all of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Permit types
Residential permits
Unincorporated residential work is permitted and inspected by the county, with floodplain review along the Fox River. Re-roofs, decks, solar and EV chargers need permits, and the permit application lists the general, roofing, plumbing and electrical contractors, with copies of the state roofing and plumbing (055) licences and the electrician’s licence.
Commercial permits
Commercial and multi-family work in unincorporated areas is a county matter, applying the adopted code with the statewide energy and accessibility requirements. All of it requires locally registered contractors and state-licensed plumbing.
Registration, trade licences and design professionals
Practically, three credential layers appear on Illinois projects: local contractor registration with the Building & Zoning Division; state licences for plumbing and roofing; and, on commercial and larger residential work, drawings from an Illinois-licensed design professional. Confirm what the Building & Zoning Division requires for the specific building before filing.
Illinois licenses plumbers through the Department of Public Health and roofing contractors through the Department of Financial and Professional Regulation; there is no state general contractor or electrician licence, and many jurisdictions require local registration. Contractor credentials in Illinois
Kane County permit costs and fees
Budget the county building permit and plan-review fees and separate trade permits. The county application asks for both the project cost and the new square footage; ask the Building & Zoning Division for the fee schedule in force.
Rather talk it over?
Call 1-855-478-4290 →| Fee component | How it works |
|---|---|
| Building permit | Based on project valuation or square footage; set by the local schedule |
| Plan review | A percentage of the permit fee or a flat charge, at submittal |
| Trade permits | Separate electrical, plumbing and mechanical fees |
| Contractor registration | Local registration fees for the trades pulling permits |
| Zoning and impact | Local zoning review, and impact or capital fees in growth areas |
| Re-inspections and revisions | Additional fees for failed inspections, revisions and expired permits |
Illinois sets one useful certainty in law: once a permit is issued, the code requirements in effect on January 1 of the year you applied govern for the life of that permit, so a mid-project code change will not move the target. Fee schedules, though, are local and change, so a figure from a neighbouring town is not reliable — ask the Building & Zoning Division for the schedule in force on your filing date.
Need a real number for a specific Kane County project? Send us the scope, address and valuation and we will identify the authority having jurisdiction, the code edition in force and the fee categories that will apply.
Trade permits and who may pull them
Permit required
- Service installations, panel upgrades, new circuits, solar PV and EV chargers
- New plumbing, repipes, water heater change-outs, fixtures, backflow and gas piping
- HVAC installation and change-out, ductwork, venting and commercial kitchen exhaust
- Sprinkler, standpipe and fire alarm work on commercial and multi-family structures
Typically exempt
- Replacing a fixture, switch, receptacle or light with no alteration to wiring or piping
- Clearing a stoppage without replacing or rearranging concealed piping
- Filter, thermostat and routine component service
- Like-for-like appliance repair that does not alter the connection
Rather not deal with the Kane County building department?
Get a free quote →Plumbing follows the Illinois Plumbing Code and a licensed plumber (Chicago licenses its own plumbers); electrical and mechanical work follow the locally adopted codes and local licensing or registration. Trade credentials in Illinois
How to apply for a Kane County building permit
Aurora, Elgin and St. Charles file with their own counters.
The county sets the edition and amendments for unincorporated areas.
Riverfront parcels can raise floodplain review.
The county application asks for roofing, plumbing and electrical licence copies.
Plumbing and roofing are state-licensed trades.
Confirm the sets and forms the Building & Zoning Division needs.
Review, corrections and what actually causes delay
In Illinois, the first cause of delay is uncertainty over jurisdiction and the applicable code edition — filing under the wrong amendments, or with the county when a municipality should have it. After that come missing local contractor registrations, a plumbing scope not tied to a state-licensed plumber, energy-code documentation, and a submittal that did not match what the Building & Zoning Division requires. Build the review time into the schedule and confirm the checklist before filing.
A building permit carries a validity period set by Kane County; confirm the expiry on phased or delayed work before it passes. Permit validity in Illinois
Inspections in Kane County
Where a permit is required, standard checkpoints include footing and foundation, framing, rough-in electrical, plumbing and mechanical, insulation and energy, fire systems on commercial work, and final, with a certificate of occupancy before use. Fox River floodplain parcels add elevation and site verification.
Illinois is tightening inspector qualifications: from January 1, 2027, those who perform building inspections must hold International Code Council certification, with a grace period after hire. Confirm the notice the Building & Zoning Division needs and schedule around its inspection windows.
Want this handled start to finish?
Get a free quote →Do not cover work before the required inspection has been approved. Keep the issued permit, the approved plans, product listings, energy documentation and your correction responses available on site.
Kane County permit search and official resources
Permit records in Illinois sit with the local authority that issued them. Where the Kane County Building & Zoning Division is the authority for unincorporated Kane County, it holds the building permit, the inspection history and the certificate of occupancy. If you are buying, refinancing or renovating, confirm that past work was permitted rather than assuming it was — and confirm the code edition that was in force.
Confirm the authority having jurisdiction and the code edition first. Illinois’s local-adoption structure — with the statewide baseline now under it — means the applicable code and amendments vary by parcel. Confirm current requirements, fees and review turnaround for your filing date.
These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.
- Kane County Building & Zoning Division
- Illinois Capital Development Board (statewide codes)
- Illinois Plumbing Code (IDPH)
- Illinois DFPR (roofing and professional licensing)
- Illinois Office of the State Fire Marshal
Frequently asked questions
Where do I get a Kane County building permit?
From the county Building & Zoning Division in Geneva, for unincorporated areas and the villages of Big Rock, Kaneville and Virgil; Aurora, Elgin, St. Charles and the other municipalities run their own departments.
Do Aurora and Elgin run their own permitting?
Yes. Both are among the largest cities in Illinois and run their own building departments; only unincorporated parcels and parcels in Big Rock, Kaneville and Virgil file with the county.
Inspections are where schedules slip.
Get a free quote →Is plumbing handled locally?
Partly. The Illinois Plumbing Code and plumber licensing are statewide (Department of Public Health), but a local government may adopt a stricter plumbing code, and plumbing permits and inspections are handled by the local building department where it runs them. In Kane County, confirm with the department.
Do Fox River parcels have extra rules?
Often. Floodplain and stormwater review can apply along the Fox River; confirm with the Building & Zoning Division early.
Do contractors register with the county?
The county application lists each contractor and asks for copies of the roofing, plumbing (055) and electrical licences; plumbing and roofing are state-licensed.
How do I run a Kane County permit search?
The Building & Zoning Division holds records for unincorporated areas; municipal records sit with each city or village.
Simplify Kane County permitting with Alliance Permitting
Kane County’s big cities self-permit, so the first question is jurisdiction, then the adopted code and any Fox River floodplain review. Getting those settled up front keeps a project moving in the western collar.
Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Kane County because the work is done by people who have stood at the counter:
- We confirm whether the parcel is unincorporated or municipal.
- We confirm the adopted code edition and amendments.
- We check Fox River floodplain status early.
- We list the contractors and confirm state plumbing and roofing licences.
- We assemble the county plan set and track issuance.
Alliance Permitting is a permit documentation and submission company in Illinois. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.
Ready to break ground in Kane County sooner?
Let Alliance prepare, file, and track your Kane County permits while your crew stays on the job.
More Illinois permitting guides
This guide is provided by Alliance Permitting for general information about Kane County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.