DuPage County Building Permits & Inspections: Start Here
Quick answer: the DuPage County Building & Zoning Department handles building permits, plan review, zoning-related services and construction inspections primarily for unincorporated DuPage County, Illinois. If your property is inside an incorporated city or village, that municipality usually handles the permit instead.
That jurisdiction check matters. A Wheaton, Naperville, Bloomingdale or Bolingbrook mailing address does not automatically mean DuPage County is your permit authority. Spending five minutes checking first can save a rejected application, wrong fee or wasted trip.
BuildingandZoning@dupagecounty.gov
Wheaton, IL 60187
8:00 a.m.–4:30 p.m.
DuPage County’s official building page specifically describes its permit service as covering building projects and permits for unincorporated areas of DuPage County. Incorporated municipalities normally run their own building departments.
1. Check the Permit Jurisdiction Before You Apply
This is the most important step for anyone searching for the DuPage County Building Department. The county does not issue every building permit within the geographic boundaries of DuPage County.
Fastest way to check an unincorporated parcel
- Find the property’s 10-digit Parcel Identification Number (PIN). If you do not know it, use the official DuPage County Property Records Search.
- Open the DuPage County zoning lookup.
- Enter the 10-digit PIN without hyphens.
- Review the zoning/jurisdiction information returned for the parcel.
- If the property is unincorporated but the lookup does not return the expected information, call Zoning at 630-407-6700.
2. What Projects Does DuPage County Handle?
The county publishes project-specific instructions rather than treating every job as the same permit. Its Building & Permits page currently lists residential accessory projects, new houses, additions, remodeling, demolition, commercial construction and specialized work.
| Project | County permit path or issue to check |
|---|---|
| New house | Building application, plans, drainage review, zoning, contractor information and required inspections. |
| Home addition | Building permit plus site, zoning, drainage and structural review as applicable. |
| Deck | Listed by the County as a Residential Accessory permit project. |
| Detached garage | Residential accessory permit with project-specific plan and location requirements. |
| Shed or gazebo | Residential accessory category; verify size, setbacks, easements and drainage. |
| Fence | County publishes a specific fence project guide; zoning and easement location matter. |
| Pool, spa or hot tub | Residential accessory permit with electrical, barrier and inspection requirements. |
| Patio / terrace | Permit path can include drainage review and a concrete pre-pour inspection. |
| Generator / A/C unit | County publishes a dedicated installation guide; location and electrical requirements can apply. |
| Roof or siding | Use the County’s re-roof/reside project instructions. |
| Electrical work | Panels, upgrades and overhead-to-underground conversions are specifically listed. |
| Demolition | Separate permit route for full structure demolition or interior demolition. |
| Commercial construction | Commercial new construction, additions and remodels have separate review requirements. |
| Grading / excavation | Handled through the grading permit route; stormwater or floodplain review may also be required. |
| Sign | Other Building Permits category with zoning and electrical issues where applicable. |
Use the County’s official project list to open the PDF prepared for your exact project before uploading plans.
3. How to Apply for a DuPage County Building Permit Online
DuPage County uses Accela Citizen Access. The portal supports online government services and requires registration for the full set of applicant features.
-
Confirm county jurisdiction.
Do not begin with the application form simply because the mailing address is in DuPage County. Confirm the parcel is under County Building & Zoning authority. -
Read the project-specific county instructions.
Open the Building & Permits page and select House, Addition, Deck, Garage, Fence, Pool, Remodel, Commercial Construction or the closest matching project. -
Open Accela Citizen Access.
Go to the official DuPage Citizen Portal. -
Create an account or sign in.
First-time applicants should use the portal’s Register for an Account option. Anonymous users have more limited services. -
Select the Building service.
Choose the permit/application category that accurately describes the work. Do not choose an accessory permit merely because it appears easier if the project is actually an addition or remodel. -
Enter the job-site information.
Use the correct property address/PIN and provide owner, contractor and project information requested by the application. -
Upload the required plans and documents.
Match the County’s project sheet. Site plans, surveys, architectural drawings, structural information and supporting documents depend on the work. -
Submit and monitor review comments.
Plan review may result in corrections. Respond with the requested revised information rather than creating a duplicate application. -
Complete permit-issuance requirements.
Applicable permit fees, registered contractors, bonds, outside approvals and other conditions must be resolved before issuance. -
Do not begin regulated work before issuance.
A submitted application or payment is not the same as an issued building permit.
4. What Should You Prepare Before Applying?
The exact checklist changes by project, but having the following information ready avoids many preventable delays:
- Property address and Parcel Identification Number (PIN).
- Owner name and contact information.
- Clear description and scope of work.
- Current plat of survey or site plan when required.
- Building dimensions, setbacks and proposed location.
- Construction drawings appropriate to the project.
- Structural details or professional design where required.
- Contractor information and applicable registrations.
- Project valuation/cost information.
- Drainage, grading, floodplain or wetland information where relevant.
- Well/septic information for properties using private systems.
- Manufacturer specifications for equipment such as generators, pools or similar installations when requested.
5. DuPage County Building Permit Fees
The County’s currently published Building & Zoning fee schedule is effective May 1, 2025. Fees are not one flat amount: application, plan review, drainage, permit, bond, occupancy and other charges can apply depending on the project.
Common application fees
| Application type | Published application fee | Published drainage review |
|---|---|---|
| Type I – Accessory structure | $50 | $40 |
| Type II – New house | $679 | $365 |
| Type II – Addition, County staff review | $145 | $80 |
| Type II – Addition, outside consultant | $679 | $80 |
| Type III – New commercial / addition | $500 | Project-specific |
| Other commercial | $150 | Project-specific |
The building application fee is listed as non-refundable, but the schedule states that it is credited toward the final permit fee when the permit is issued. Plan-review fees are also non-refundable.
Residential plan-review fees
| Project area | Residential plan-review fee |
|---|---|
| 0–400 sq. ft. | $50 minimum |
| 401–1,000 sq. ft. | $145 |
| 1,001–1,599 sq. ft. | $175 |
| 1,600–2,399 sq. ft. | $205 |
| 2,400–3,000 sq. ft. | $235 |
| 3,001–5,000 sq. ft. | $270 |
| 5,001–8,000 sq. ft. | $300 |
| 8,001–10,000 sq. ft. | $350 |
How some building permit fees are calculated
- Single-family/townhome: $10 per $1,000 of calculated construction cost or fraction, $50 minimum.
- New residential construction: the published valuation basis is $90 per square foot for applicable areas.
- Residential remodel: based on construction cost, with a $100 minimum published permit fee.
- Decks, piers and patios: published valuation basis of $10 per square foot.
- Accessory structure 150 sq. ft. or less: $10 per square foot valuation basis.
- Accessory structure over 150 sq. ft.: $30 per square foot valuation basis.
- Commercial/industrial: $30 per $1,000 of construction cost or fraction, $150 minimum.
View the official DuPage County Building & Zoning fee schedule PDF.
6. How to Schedule a DuPage County Building Inspection
For Building/Plumbing inspections, call 630-407-6700. County inspection guidance says to contact the office at least 24 hours before the day the inspection is needed and to have the permit number available.
- Confirm the permit has been issued and the work is at the correct inspection stage.
- Keep work that must be inspected visible; do not cover it prematurely.
- Have the permit number and property address ready.
- Call 630-407-6700.
- State the inspection type you need.
- Confirm job-site access and any instructions from the inspector.
- Keep the approved/stamped plans and approved revisions at the site.
- If corrections are issued, complete every cited item before requesting reinspection.
Possible inspection stages
Not every project needs every inspection. Depending on the scope, the County’s published inspection list includes:
| Stage | Typical timing |
|---|---|
| Erosion control | Before excavation or major soil movement. |
| Footing | After excavation/forms and before concrete is poured. |
| Spotted plat | After foundation placement where required and before backfill approval. |
| Backfill | Before foundation backfill after required drainage/waterproofing work. |
| Under-slab plumbing/electrical | Before installation is concealed. |
| Concrete pre-pour | Before slabs, driveways, patios or other applicable concrete is placed. |
| Framing / rough trades | Before insulation or wall finishes conceal the work. |
| Insulation / energy | After applicable energy-code work and before interior finishes. |
| Final building | After approved work is complete and before use/occupancy where applicable. |
| Plumbing final | After plumbing work is complete where applicable. |
Reinspection fees
The published fee schedule lists $50 for the first applicable building reinspection, $75 for the second, and $100 for subsequent reinspections. A $100 fee is listed for a reinspection involving a Notice of Violation.
7. Search an Existing DuPage County Building Permit
You can search public building applications through DuPage County’s Accela system. The Building search supports criteria including a site address, parcel number, record/application information and contact information.
- Open the official Building record search.
- If known, start with the permit or record number because it is the most specific search.
- Otherwise select the appropriate search method and enter the property address or parcel number.
- Open the matching application/permit record.
- Review available status, application and project information.
Do not assume that an issued permit proves the job was completed. For property due diligence, also check whether required inspections and final/occupancy approvals were completed.
8. Zoning, Drainage, Floodplain and Other Reviews
A building permit is only one part of some DuPage County projects. Exterior construction can also involve zoning setbacks, drainage, grading, floodplain/wetland restrictions, roadway access, private well/septic review or stormwater requirements.
Zoning
Use the official zoning lookup with the parcel PIN. For a property that is unincorporated but does not have a PIN or where designation information does not appear, the County directs users to call the Zoning Division at 630-407-6700.
Drainage and special management areas
County project sheets warn that floodplain, wetland and wetland-buffer conditions can create additional requirements. Site work should not create a negative drainage impact on neighboring property.
Well and septic
Properties using private wells or septic systems may need DuPage County Health Department review or approval in addition to Building & Zoning requirements.
Before digging
DuPage County directs property owners and contractors to contact JULIE / Illinois One Call by dialing 811 before excavation so underground utilities can be located.
9. DuPage County Building Codes: Important 2026 Update
The County’s Building & Permits page still notes a Building Code change effective January 1, 2024. However, there is a newer development that matters for 2026 projects: the DuPage County Board adopted additional updates to Chapter 8 of the County Building Code on October 13, 2026.
Because this update is very recent, do not design a project from an old downloaded checklist alone. Check the current Chapter 8 text and confirm project-specific requirements with Building & Zoning before finalizing plans.
10. Practical Checklist Before You Submit
- ☐ Confirm the parcel is actually under DuPage County jurisdiction.
- ☐ Check zoning before paying for final plans.
- ☐ Open the project-specific County PDF.
- ☐ Use the correct Accela permit type.
- ☐ Make the survey, plans and application dimensions agree.
- ☐ Check drainage, floodplain, wetland and well/septic issues early.
- ☐ Confirm contractor registration before permit issuance.
- ☐ Review the current fee schedule rather than estimating from an old project.
- ☐ Wait for permit issuance before starting regulated construction.
- ☐ Schedule each required inspection before work is covered.
- ☐ Obtain final approval / Certificate of Use and Occupancy when required.
DuPage County Building Department: 10 Frequently Asked Questions
1. Does DuPage County issue building permits for every property in the county?
No. DuPage County Building & Zoning primarily handles permits for unincorporated areas. Properties within incorporated cities and villages generally use that municipality’s building department.
2. How do I apply for a DuPage County building permit?
First confirm County jurisdiction, review the official project instructions, then use DuPage County’s Accela Citizen Access portal. Register or sign in, select the correct Building application, enter the property and project details, upload required documents and submit for review.
3. What is the DuPage County Building & Zoning phone number?
The published Building & Zoning contact number is 630-407-6700.
4. Where is the DuPage County Building & Zoning office?
The County campus address is 421 N. County Farm Road, Wheaton, IL 60187. Calling 630-407-6700 before an in-person visit is useful when you need project-specific assistance or an appointment.
5. How much is a DuPage County building permit?
There is no single price. The currently published schedule effective May 1, 2025 lists a $50 application fee for Type I accessory structures, $679 for a Type II new-house application, $145 for a staff-reviewed addition, $679 for an outside-consultant addition, $500 for new commercial/addition applications and $150 for other commercial applications. Additional permit, plan-review, drainage, bond and occupancy fees may apply.
6. How do I schedule a DuPage County building inspection?
Call Building & Zoning at 630-407-6700. Published County guidance asks applicants to contact the office at least 24 hours before the needed inspection and to have the permit number ready.
7. Can I search DuPage County building permits online?
Yes. Use the Building section of DuPage County Accela Citizen Access. Searches can use information such as the record number, property/site address or parcel number.
8. Do I need a DuPage County permit for a deck, fence, shed or pool?
DuPage County lists decks, fences, sheds, detached garages, gazebos, patios and swimming pools/hot tubs among its Residential Accessory permit project categories. Confirm the exact requirement for your parcel and project before construction.
9. What happens if work starts before a required permit is issued?
The County’s published fee schedule states that when permit-required work starts without prior permit issuance, the normal permit fee is doubled. Enforcement or corrective work may create additional consequences depending on the project.
10. Did DuPage County change its building code in 2026?
Yes. The DuPage County Board adopted updates and recodification changes to Chapter 8 of the County Building Code on October 13, 2026. For a current project, use the live County code and Building & Zoning guidance rather than relying only on an older project sheet.
Use the County Website for the Final Action
If your parcel is in unincorporated DuPage County, the fastest path is simple: confirm jurisdiction → open the correct project guide → submit through Accela → respond to review comments → receive the permit → schedule required inspections → complete final approval.
You should not need to search through several third-party sites to understand the process. When you are ready to submit, pay, check a live record or obtain a property-specific decision, use the official links below.
Independent guide: USBuilding.org is not DuPage County Government and cannot issue, approve or deny a permit. Fees, code provisions and project-specific requirements can change; the responsible government office remains the final authority for a specific property or construction project.