Illinois has no deck code of its own. Local codes must now meet the IRC. Footings, ledgers, guards and stairs, with the numbers inspectors check.

What a DuPage County building permit application has to contain, which items are needed before it issues, and the inspection sequence that follows.

DuPage County charges $10 per $1,000 of construction value with a $50 floor. Here is how a deck, garage and addition actually price out.

Wheaton requires a permit for most structural, electrical, plumbing and roofing work, plus decks, patios and windows. Here is what needs one.