Illinois Pool Permit Requirements — 2025 County and City Guide
Illinois municipalities adopt the IRC independently, creating meaningful differences between Chicago, the north shore suburbs, and downstate communities. Here is the complete breakdown for the Chicago metro area and beyond.
Illinois Pool Permit Requirements by County and City
| Jurisdiction | Depth Threshold | Building Permit Fee | Review Time | Online Submission? |
|---|---|---|---|---|
| Cook County (Chicago suburbs) | 24 in | $300–$900 | 10–20 days | Yes |
| City of Chicago | 24 in | $400–$1,100 | 15–25 days | Yes — Chicago BACP portal |
| DuPage County | 24 in | $250–$750 | 8–16 days | Yes |
| Lake County | 24 in | $250–$725 | 8–16 days | Yes |
| Will County | 24 in | $225–$675 | 8–15 days | Yes |
| Kane County | 24 in | $200–$625 | 7–14 days | Partial |
| Kendall County | 24 in | $200–$600 | 7–14 days | Partial |
| McHenry County | 24 in | $200–$600 | 7–14 days | Partial |
| Sangamon County (Springfield) | 24 in | $175–$525 | 6–13 days | Partial |
| Rural Illinois counties | 24 in | $75–$300 | 4–10 days | Rarely |
Chicago vs. Chicago Suburbs: Two Very Different Experiences
The City of Chicago issues building permits through the Department of Buildings' BACP (Business Affairs and Consumer Protection) online portal. Chicago's permit process is notably more complex than the surrounding suburban municipalities and county areas. Chicago reviews pool applications for compliance with the Chicago Building Code (which has its own amendments to the IRC), zoning compliance, and in some cases, landmark or historic district review. Review times of 15 to 25 business days are common for residential pool permits in Chicago proper.
The Chicago suburbs — DuPage, Lake, Will, Kane, and McHenry counties — each operate their own permit systems at the municipal level. Many Chicago suburbs have adopted the IRC directly and have efficient online portals. Naperville, Schaumburg, Aurora, and similar suburban cities process pool permits in 8 to 14 business days with straightforward submittal requirements.
One important Illinois distinction: several of the wealthiest north shore suburbs (Winnetka, Glencoe, Lake Forest, Highland Park) have adopted local building code amendments that impose stricter setback and barrier requirements than the IRC baseline. If you are building in these communities, request the specific pool permit requirements from the village's building department rather than assuming the IRC standard applies.
Documents Required for a Illinois Pool Permit
- Completed permit application from your city or county building department
- Site plan showing pool placement with all setback distances to property lines, house, and easements — must include a north arrow
- Pool manufacturer spec sheet (above-ground) or engineer-stamped construction drawings (inground)
- Property survey showing lot boundaries and all recorded easements
- Licensed contractor's state license number and insurance certificate
- HOA architectural approval letter if your property is in an HOA community
- Electrical permit application filed separately by your licensed electrician
- Permit fee payment
Pool Barrier Requirements in Illinois
Illinois enforces pool barrier standards consistent with the IRC Section R326. All pools holding water 24 inches or deeper require: a minimum 48-inch barrier on the exterior, self-closing and self-latching gate opening away from the pool with latch on pool side at least 54 inches from grade, no fence openings larger than 4 inches, and no climbable horizontal members within 36 inches of the barrier exterior. If the house wall forms part of the barrier, all access doors must have self-closing hardware and audible door alarms.
Building a Pool Without a Permit in Illinois
Unpermitted pools in Illinois face the same discovery risks as anywhere: aerial imagery reviews, home sale inspections, neighbor complaints, and insurance claims. Retroactive permitting is almost always available but costs 1.5× to 3× the standard fee, plus any corrective work to bring the pool into current code compliance. The proactive path is cheaper and faster. Full details: What Happens If You Build a Pool Without a Permit.