Downers Grove is a DuPage County commuter suburb of about 50,000 residents west of Chicago, with a walkable downtown and a medical and university base. Building permits are issued by the Building Division of the Village of Downers Grove Community Development Department at the Civic Center, 850 Curtiss Street (permits 630-434-5515, Monday to Friday 7:30am to 4:30pm), under the village’s home-rule code. Applications are filed only through the village’s online permit portal.
This guide covers the building division, the home-rule code, the medical and institutional base, and how the statewide layers and registration work.
This guide covers work inside the Village of Downers Grove limits. Unincorporated DuPage County and neighbouring municipalities are separate authorities.
Downers Grove runs its own home-rule building division, with a hospital and a university campus driving institutional work alongside a stable residential base. The village issues permits under its own code and reviews documents against local, state and national standards. Confirm the parcel is inside Downers Grove rather than unincorporated DuPage or a neighbour.
What requires a building permit in Downers Grove?
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
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 division before work starts.
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Get a free quote →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 Downers Grove, the building division administers the village’s home-rule building code, with a medical and university base; 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 Downers Grove?
The building division handles plan review, permit issuance and inspections inside the village under the home-rule code.
| Detail | Information |
|---|---|
| Authority | Village of Downers Grove Community Development Department, Building Division, Civic Center, 850 Curtiss Street, Downers Grove, IL 60515 · permits 630-434-5515, inspections 630-434-5529 · Monday to Friday 7:30am to 4:30pm |
| County | DuPage |
| Serves | Work inside the Village of Downers Grove limits |
| Home rule | Village sets and amends its own code |
| Base | Hospital and university campus |
| Code | Downers Grove home-rule building code, plus statewide Illinois codes |
| Plumbing | Illinois Plumbing Code with Downers Grove amendments; village plumbing permits; state-licensed plumbers |
| Registration | Owner authorization form and a list of contractors with each application |
The building division reviews plans, issues permits and inspects construction inside the village under Downers Grove’s home-rule code, checking documents against local, state and national standards. A hospital and a university campus drive healthcare and institutional work, alongside a walkable downtown and established residential neighbourhoods. Unincorporated DuPage County and neighbouring municipalities are separate authorities, so confirm the parcel first.
Not sure this scope needs a permit?
Get a free quote →The statewide Illinois energy, plumbing and accessibility codes apply on top of the village code, with plumbing tied to a state-licensed plumber.
Permit types
Residential permits
Residential work spans established neighbourhoods, high-value renovations, infill and accessory structures. Re-roofs, decks, solar and EV chargers need permits, plumbing is tied to a state-licensed plumber, and each application carries an owner authorization form and a list of the contractors on the job.
Commercial permits
Commercial and institutional work runs from the hospital and university campus to downtown and retail, all under the village’s home-rule code, the statewide energy and accessibility requirements and specialised review, with plumbing tied to state-licensed plumbers.
Registration, trade licences and design professionals
Practically, three credential layers appear on Illinois projects: local contractor registration with the building 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 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
Downers Grove permit costs and fees
Budget the village building permit fee and separate trade permits. Downers Grove charges by floor area, not valuation: a new building is $2,115 for the first 1,000 sq ft plus $1,060 for each further 1,000 sq ft, commercial additions and alterations start at $1,140 for the first 1,000 sq ft, and residential additions and alterations carry a $555 basic fee plus plumbing and electrical fees (village User-Fee, License and Fine Schedule, April 2026).
| 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 |
Rather talk it over?
Call 1-855-478-4290 →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 division for the schedule in force on your filing date.
Need a real number for a specific Downers Grove 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
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
Rather not deal with the building department?
Get a free quote →How to apply for a Downers Grove building permit
Unincorporated DuPage County and neighbours are separate authorities.
The village asks for an owner authorization form and a contractor list.
Plumbing and roofing are state-licensed trades.
Large occupancies raise specialised review.
The home-rule code carries its own amendments.
Confirm the sets and forms the village 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 division requires. Build the review time into the schedule and confirm the checklist before filing.
A building permit carries a validity period set by Downers Grove; confirm the expiry on phased or delayed work before it passes. Permit validity in Illinois
Inspections in Downers Grove
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. Medical and campus occupancies add specialised life-safety and systems 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 division needs and schedule around its inspection windows.
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.
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Get a free quote →Downers Grove permit search and official resources
Permit records in Illinois sit with the local authority that issued them. Where the Downers Grove Building Division is the authority for the Village of Downers Grove limits, 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.
- Village of Downers Grove, Illinois
- 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 Downers Grove building permit?
From the Village of Downers Grove Building Division, which issues permits under the home-rule code for work inside the village.
Is there specialised review for medical work?
Yes. The hospital and university campus bring healthcare and institutional projects with specialised life-safety and systems review.
Inspections are where schedules slip.
Get a free quote →Is Downers Grove’s code its own?
Yes. As a home-rule village, Downers Grove adopts and amends its own building code; the statewide Illinois codes apply on top.
Is plumbing handled locally?
Partly. The village issues plumbing permits ($355 residential, $590 commercial in the April 2026 schedule) and inspects the work under the Illinois Plumbing Code with Downers Grove amendments. The work must be done by a state-licensed plumber.
Do I register with the village or the county?
The village does not list a general contractor registration in its fee schedule; it asks for a list of contractors with each application. Unincorporated parcels file with DuPage County, which does register contractors.
How do I run a Downers Grove permit search?
The village holds permit and inspection records for work inside the village.
Simplify Downers Grove permitting with Alliance Permitting
Downers Grove runs a home-rule Building Division with a medical and university base, so the questions are jurisdiction, specialised life-safety review, and a complete online submittal. Getting those right keeps a DuPage-suburb project moving.
Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Downers Grove because the work is done by people who have stood at the counter:
- We confirm village-versus-county jurisdiction from the parcel.
- We prepare the contractor list and owner authorization the village needs.
- We coordinate life-safety review on medical and campus work.
- We assemble the plan set to Downers Grove’s home-rule code.
- We confirm state plumbing and roofing licences and track the review.
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.
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Let Alliance prepare, file, and track your Downers Grove permits while your crew stays on the job.
More Illinois permitting guides
This guide is provided by Alliance Permitting for general information about Downers Grove permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.