Naperville, IL Building Safety: Building Inspections (2026)
Key Facts
- Governing section
- Naperville Municipal Code § 1-9H-2
- Regular inspection fee
- $68.00, includes clerical review
- Timed/reinspection minimum
- $68.00 min, $50.00/hour plus $18.00 clerical
- Inspection stages, in order
- 21 stages, footing through final inspections
- Residential fee basis
- Scaled by square footage, $50.00 to $228.00
- Last amended
- Ord. No. 20-112 (2020) and No. 19-039 (2019)
Summary
Naperville Municipal Code Section 1-9H-2 lists the inspections required, in chronological order, for new commercial building construction and major alterations: footing, foundation wall, backfill, underground plumbing, commercial slab, sewer and water, rough framing, rough electric, rough plumbing, electric upgrade, electric service, temporary electric, ceiling, electric ceiling, HVAC ductwork, fire sprinkler, hydrostatic test, final electric, final plumbing, fire alarm, and final inspections. A regular inspection costs $68.00, including clerical review.
1.3.Inspection fees Regular inspection 68.00 (Including clerical review) 1.4.Timed inspection/reinspection $68.00 minimum ($50.00 per hour, plus $18.00 clerical review) 1.4.1.Inspections most commonly required for new commercial building construction and major alterations listed in chronological order: Footing* Electric service Foundation wall* Temporary electric Backfill Ceiling Underground plumbing Electric ceiling Commercial slab* HVAC ductwork* Sewer and water* Fire sprinkler* Underground plumbing Hydrostatic test* Rough framing Final electric Rough electric Final plumbing* Rough plumbing Fire alarm* Electric upgrade Final inspections* *These inspections are billed to the applicant at the hourly rate.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 101).
Full Breakdown
00 fee. 00 clerical-review charge, and applies whenever a stage has to be repeated. All plan review and clerical fees are due and payable when the application is submitted. 00 for homes over 9,001 square feet, and covering the electrical, plumbing, structural, and mechanical categories together. 00 reinspection fee applies if any stage has to be redone. The commercial fee schedule was last amended by Ordinance No. 20-112 on November 4, 2020; the residential schedule was last amended by Ordinance No. 19-039 on April 3, 2019.
Violations & Fines
A failed stage anywhere in the sequence stops the project from moving to the next stage until it is reinspected and passed. On commercial jobs, that reinspection carries the $68.00-minimum timed charge of $50.00 per hour plus $18.00 clerical review; on one- and two-family jobs it is a flat $50.00 reinspection fee. Because footing, foundation, slab, and final sign-offs are all timed-rate stages on commercial projects, a contractor who fails inspection at those points pays the hourly rate, not the flat fee, for every return visit.
Frequently Asked Questions
What order are commercial building inspections done in, in Naperville?
How much does a Naperville commercial building inspection cost?
What happens if a Naperville building inspection fails?
Are Naperville's commercial and residential inspection fees the same?
Sources & Official References
Other rules in Naperville
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