Building Safety in Rock Island County, IL (2026)
6 rules for unincorporated Rock Island County, Illinois.
Verified from official government sources
Fire Sprinkler Requirements
Rock Island County adopted the 2012 International Residential Code, including its automatic fire sprinkler section for one- and two-family dwellings, R313.2. The county's local amendment adds an Exception 2 letting specific alteration work skip the sprinkler system when it meets Section R501.3 and the under-stair surface and any soffits carry 1/2-inch gypsum board protection.
Fire Sprinkler Rule Exception, Rock Island County
Some RestrictionsRock Island County Code of Ordinances § 150.16(L)
(L) R313.2 One- and Two-Family Dwelling Automatic Fire Systems. Add: “Exception 2. An automatic residential fire sprinkler system shall not be required when the requirements of Section R501.3 are met and the under-stair surface and any soffits are protected with 1/2 gypsum board.”
Childcare Center Rules
Rock Island County treats a home daycare as its own building-safety category. The 2012 IRC amendments the county adopted at § 150.16(W) pull in Appendix M, Home Daycare R-3 Occupancy, meaning a licensed home daycare in the unincorporated county must meet the R-3 occupancy construction and life-safety standards that appendix sets, not just the ordinary single-family rules.
Rock Island County Home Daycare Building Rules
Some RestrictionsRock Island County Code of Ordinances § 150.16(W)
(W) Appendices. Adopt as noted: ... 5. M - Home Daycare R-3 Occupancy; 6. O - Automatic Vehicular Gates; and 7. Q - ICC- IRC Electrical provisions/NEC cross-reference.
Carbon Monoxide Detectors
Every dwelling unit in unincorporated Rock Island County must have a working carbon monoxide alarm within 15 feet of every bedroom. Section 150.22(J), adding new text 603.1.2 to the county's amended International Property Maintenance Code, sets that requirement along with a separate annual test mandate for older furnaces.
Rock Island County Carbon Monoxide Alarm Rule
Some RestrictionsRock Island County Code of Ordinances § 150.22(J) (new text 603.1.2)
“603.1.2: Every dwelling until shall be equipped with at least one approved carbon monoxide alarm in an operating condition within 15 feet of every room used for sleeping purposes. Carbon monoxide detector/smoke detector alarms may be installed only if the combined unit provides different alarm tones for the carbon monoxide detection and the smoke detection. Every structure that contains more t...
Building Permits
Nearly any construction, alteration, or system work on a building in unincorporated Rock Island County needs a permit first. Section 150.01(A)(1) requires an owner or authorized agent to apply to the Director of Zoning and Building and get the permit before construction, alteration, demolition, or an electrical, mechanical, or plumbing change begins.
Rock Island County Building Permit Requirement
Some RestrictionsRock Island County Code of Ordinances § 150.01(A)(1)
(1) Permit required. Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish, or change the occupancy of a building or structure, or to erect, install, enlarge, alter, repair, remove, convert, or replace any electrical, mechanical, or plumbing system, the installation of which is regulated by codes adopted by the county, or to cause any such work to be d...
Electrical Permits
Electrical work in unincorporated Rock Island County requires a licensed, registered electrical contractor. Section 150.01(B)(2)(a) makes registration and county licensing mandatory before anyone can engage in electrical contracting, and even a homeowner wiring their own house under § 150.01(B)(3)(b) still has to pull a permit and call for a county inspection.
Rock Island County Electrical Contractor Permits
Some RestrictionsRock Island County Code of Ordinances § 150.01(B)(2)(a), (B)(3)(b)
(2) (a) Except as provided in division (B)(3) below, before any person shall engage in the business of electrical contracting in the county, and before any person now engaged in the business or any class thereof shall continue in the business of electrical contracting, such person shall be required to register and be licensed with the county. ... (3) ... (b) Persons performing electrical ...
Plumbing Permits
Plumbing work in unincorporated Rock Island County runs on the Illinois Plumbing Code, not a locally written plumbing chapter. Section 150.17(D) of the county's building code amendments makes the "most recent edition of the Illinois Plumbing Code" the governing standard for installing, altering, or repairing plumbing systems, with the IRC filling in anything the state code doesn't cover.
Rock Island County Plumbing Permit Requirements
Some RestrictionsRock Island County Code of Ordinances § 150.17(D)
Section 101.4.3 Plumbing. Remove the paragraph and replace with: “The most recent edition of the Illinois Plumbing Code shall apply to the installation, alteration, repair, relocation, addition, replacement, and maintenance of plumbing systems as stipulated by the Illinois Plumbing Code. The provisions of the International Residential Code shall apply to all plumbing and piping systems not cove...
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