BuildingPermitCost Illinois permit fees at a glance
This page covers 8 cities and 2 counties in Illinois, each priced from its own official fee schedule. For the same $75,000 addition, totals run from $351.00 in Elgin to $2,210.00 in Aurora, with a Illinois median of $600.00, 27% below the median of $820.58 across all 267 places on this site.
The most common pricing method here is a fee table based on floor area (3 of 10), followed by a percentage of project value (3) and a fee table based on project value (2). For project value, 4 places use floor area instead of value, 4 places use your contract or bid price and 2 places use the higher of your bid and a valuation table.
6 of 10 charge a separate plan review fee.
6 of 10 schedules state an effective date, 4 of them from 2025 or later. Every page shows its effective date and the date we last checked it against the official source.
| Project | Illinois median | National median | Places |
|---|---|---|---|
| $25,000 remodel | $250.00 | $380.00 | 10 |
| $75,000 addition | $600.00 | $820.58 | 9 |
| $350,000 new home | $2,460.00 | $2,918.63 | 9 |
Calculate your own project · Compare Illinois places side by side · Fees people often miss
Cities
| Jurisdiction | $25k remodel | $75k addition | $350k new home | Verified |
|---|---|---|---|---|
| Aurora | $741.75 | $2,210.00 | $2,460.00 | Nov 4, 2026 |
| Bloomington | $174.50 | — | $360.00 | Nov 5, 2026 |
| Champaign | $150.00 | $450.00 | $345.00 | Nov 5, 2026 |
| Decatur | $200.00 | $450.00 | $1,925.00 | Nov 5, 2026 |
| Elgin | $2,193.75 | $351.00 | $2,106.00 | Nov 5, 2026 |
| Evanston | $550.00 | $1,590.00 | $7,808.50 | Nov 5, 2026 |
| Joliet | $250.00 | $750.00 | — | Nov 5, 2026 |
| Peoria | $200.00 | $600.00 | $2,800.00 | Nov 5, 2026 |
Counties
| Jurisdiction | $25k remodel | $75k addition | $350k new home | Verified |
|---|---|---|---|---|
| DuPage County | $300.00 | $800.00 | $3,735.00 | Nov 4, 2026 |
| Kane County | $460.00 | $460.00 | $3,750.00 | Nov 5, 2026 |
Illinois permit fee questions
How much is a building permit in Illinois?
It depends on the city or county, because each sets its own fees. Across the 9 places we cover in Illinois, the median for a $75,000 addition is $600.00 and for a $350,000 new home $2,460.00, including plan review and required surcharges.
Which Illinois places have the lowest and highest permit fees?
For a $75,000 addition, the lowest total we found is $351.00 in Elgin, IL and the highest is $2,210.00 in Aurora, IL. The tables on this page list every place we cover.
Totals use each jurisdiction's own formula for a 300 sq ft remodel, a 400 sq ft addition and a 2,400 sq ft wood-frame home. Trade permits and conditional fees are not included. Fees are estimates based on the official schedules; confirm with the permit office before applying.