Pool Permits: Downers Grove vs Naperville

Do I need a permit to build a backyard swimming pool in unincorporated DuPage County?

Yes. DuPage County Building Code Chapter 8, Article XIII (which adopts the ISPSC 2021) requires a Building Permit before installing any residential in-ground or above-ground pool, spa, or hot tub. File in the Accela portal as an accessory structure and call Building and Zoning at (630) 407-6700 for details.

What are the pool fence rules in DuPage County?

Under ISPSC Section 305 (adopted by Ch. 8, Art. XIII), an outdoor residential pool must be enclosed by a barrier at least 48 inches high with self-closing, self-latching gates that open away from the pool. Openings cannot allow passage of a 4-inch sphere, and the bottom of the barrier cannot be more than 4 inches above grade.

Does the DuPage County Health Department inspect my backyard pool?

No. The DuPage County Health Department only permits and inspects PUBLIC pools — those at hotels, motels, condo and apartment complexes, health clubs, schools, and water parks — under the Illinois Swimming Facility Act (210 ILCS 125) and 77 Ill. Adm. Code Part 820. Backyard residential pools at private homes are regulated only by Building and Zoning permitting.

I live in Naperville or Wheaton — does the DuPage County permit apply?

No. The DuPage County Building Code applies only in unincorporated DuPage. Incorporated municipalities (Naperville, Wheaton, Downers Grove, Aurora, Bolingbrook, Lombard, Glen Ellyn, etc.) issue their own pool permits. The DCHD public-pool program, however, applies countywide.

Do I need a permit for a pool in Naperville?

Yes, for any pool, hot tub, or spa over 24 inches deep. Kiddie pools under 24 inches are exempt. Apply through the Civic Access portal.

Do above-ground pools need permits in Naperville?

Yes, if they can hold more than 24 inches of water. Above-ground pools between 24-48 inches need both a permit and barrier. Pools over 48 inches may use a retractable ladder as an alternative to fencing.