Rock Island County, IL Building Safety: Plumbing Permits (2026)

Section 150.17(D), amending International Building Code Section 101.4.3, replaces the model code's plumbing chapter with a direct adoption of "the most recent edition of the Illinois Plumbing Code" for installing, altering, repairing, relocating, adding to, replacing, and maintaining plumbing systems, with the International Residential Code filling gaps the state rules don't cover. The same subsection adds a locally written minimum: any structure with a building drain needs at least one vent stack run through the roof, sized up to four inches at a point one foot below the roofline.

Getting a plumbing permit starts with § 150.01(A)(1)'s general permit-required clause, and plumbing is one of the registered trades under § 150.01(A)(3): plumbing contractors must register with the county effective March 1 each year, post the same $10,000 compliance bond required of other contractors, and separately provide "a copy of current state contractor registration and license of plumber of record." The registration filing fee for plumbing contractors is $50 per year under § 150.01(A)(5), on top of the county's building permit fee schedule referenced at § 150.16(F).

Starting plumbing work before the permit issues carries the same penalty as any other trade: a penalty fee equal to the full permit cost for the project under § 150.17(E), with escalated stop-work orders and fines under § 150.17(F) for a repeat violation within five years.