The Roofing Book

Permitting Authorities / Illinois / Village of Algonquin Community Development Department

Do you need a permit to replace a roof in Algonquin, IL?

Adopted code

Village of Algonquin Community Development Department

Yes, a permit is required to replace a roof in Algonquin, IL, issued by Village of Algonquin Community Development Department. THE VILLAGE'S OWN PERMIT RULE NAMES ROOF COVERINGS. Section 23.03 of the Village Code amends R105.1 to read that "Any owner or authorized agent who intends to construct, enlarge, alter, replace, repair, including the installation of roof coverings, siding, patios, decks," among other work, "shall first make application to the Building Official and obtain the required permit(s)." The amended R105.5 says "The work authorized by permit shall be completed and a final inspection conducted within 180 days after its issuance," with one year allowed for single-family and two-family dwellings. The amended R106.1 requires construction documents for "modifications which alter the existing roof of a dwelling unit" to be "sealed and signed by an Illinois licensed architect or structural engineer." The Permit Information page says the Community Development Department "provides plan review, issuance of building permits, performance of field inspections, and issuance of certificates of occupancy." Permit fees are in Appendix B of the Village Code, which this record did not read.

Roof code checklist: Algonquin, IL

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesalgonquin.org2026-10-17
Repair permit thresholdPublishedalgonquin.org2026-10-17
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeNot published
Ice & water shieldYesalgonquin.org2026-10-17
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNoalgonquin.org2026-10-17
Wind design criteriaPublishedalgonquin.org2026-10-17
Adopted codePublishedSec. 23.02algonquin.org2026-10-17
Contractor license / registrationYesilga.gov2026-09-18
Sales & use taxPublishedilga.gov2026-09-18

Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.

Jurisdiction
Village of Algonquin, Illinois
Jurisdiction type
city
Address
2200 Harnish Dr, Algonquin, IL 60102
Contact
  • url: https://www.algonquin.org/development
  • phone: 847-658-2700
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • state_level: Illinois licenses roofing contractors statewide with no dollar threshold. 225 ILCS 335/9(2): "No work involving the construction, reconstruction, alteration, maintenance, or repair of any kind of roofing or waterproofing may be done except by a roofing contractor or a qualifying party licensed or credentialed under this Act." Under 225 ILCS 335/5(a-3), "A municipality or a county that requires a building permit may not issue a building permit to a roofing contractor unless that contractor has provided sufficient proof of current licensure as a roofing contractor by the State," and a holder of a limited license is restricted to permits for work on residential properties of 8 units or less. The Illinois Department of Financial and Professional Regulation lists "Roofing Contractor, Licensed" among the professions it licenses.
Permit process note
THE VILLAGE'S OWN PERMIT RULE NAMES ROOF COVERINGS. Section 23.03 of the Village Code amends R105.1 to read that "Any owner or authorized agent who intends to construct, enlarge, alter, replace, repair, including the installation of roof coverings, siding, patios, decks," among other work, "shall first make application to the Building Official and obtain the required permit(s)." The amended R105.5 says "The work authorized by permit shall be completed and a final inspection conducted within 180 days after its issuance," with one year allowed for single-family and two-family dwellings. The amended R106.1 requires construction documents for "modifications which alter the existing roof of a dwelling unit" to be "sealed and signed by an Illinois licensed architect or structural engineer." The Permit Information page says the Community Development Department "provides plan review, issuance of building permits, performance of field inspections, and issuance of certificates of occupancy." Permit fees are in Appendix B of the Village Code, which this record did not read.
Adopted code
THE 2018 INTERNATIONAL RESIDENTIAL CODE WITH VILLAGE MODIFICATIONS, CHAPTER 23 OF THE VILLAGE CODE. Section 23.02 states: "The International Residential Code, 2018 edition, and appendices B, C, D, F, J and K" are "hereby adopted by reference and made part of this Section, subject to modifications set forth herein, and shall be applicable to the Village." The modifications are in Section 23.03 of the same chapter (pages dated 7/2/24), which this record read in full: they amend the permit rules, Table R301.2(1) and roof drainage (R801.3), and contain no amendment to the IRC's roof-covering or reroofing sections. The Village's Permit Information page lists the "2018 (IRC) International Residential Code" and says "We have adopted New Building Codes and Fees." Chapter 23 names the 2021 International Energy Conservation Code, while the permit page lists the 2024 edition.
Ice & water shield
Required — REQUIRED, IN THE VILLAGE'S OWN ENACTED CLIMATE TABLE. Section 23.03 of the Village Code inserts into Table R301.2(1) "Ice Barrier Underlayment Required" with the entry "Yes." The Village's amendments do not change the IRC's own ice barrier section, whose text this record does not quote. About ice & water barrier
Impact-resistant roofing
Not required — NOT REQUIRED BY THE VILLAGE CODE. Chapter 23 of the Village Code, Building Codes, which the Village hosts on its own site, was read in full for this record, including every modification to the Residential Code in Section 23.03: it contains no UL 2218, Class 4 or hail requirement for roof coverings.
Repair permit threshold
ROOF REPAIR OF 200 SQUARE FEET OR LESS IS EXEMPT; LARGER WORK REQUIRES A PERMIT. Section 23.03 of the Village Code inserts into the Residential Code: "R105.2.2.2 Siding and Roof Repair. The repair or replacement of up to an aggregate total of 200 square feet of roofing material or siding material," as work exempt from permit. The Village's Permit Information page restates it in its "Permit Required?" table: Roof Repair, "No for 200 Sq. Ft. or less."
Wind design criteria
The Village's own Table R301.2(1), inserted by Section 23.03 of the Village Code, gives "Wind Speed (three second gust)" as 115 mph, "Special Wind Region" No, "Windborne Debris Zone" No and "Topographic effects" No, with a "Ground Snow Load" of 30 pounds per square foot and "Weathering" Severe.
Sales & use tax
Illinois taxes the roofer, not the job, and the operative rate is not keyed to the Algonquin job address. Under 86 Ill. Adm. Code 130.1940(c), a construction contractor "does not incur Retailers' Occupation Tax liability as to receipts from labor furnished and tangible personal property (materials and fixtures) incorporated into a structure," but "incurs Use Tax on the cost price of the tangible personal property that is incorporated into real estate," with "roofing materials" named in the rule's own list of examples. Repair and replacement are taxed identically: 130.1940(a)(3) defines "construct" to include "repair, renovate or remodel." The Illinois Department of Revenue states the Use Tax rate as "6.25% of the purchase price or fair market value, whichever is greater." Where the contractor buys for resale, the local tax follows "the place of business at or from which the contractor or builder handles the transaction" (130.2075(b)(3)), so the combined rate on materials is the supply house's or the contractor's, which this record does not pin down. The authoritative lookup is the Illinois Department of Revenue's MyTax Illinois Tax Rate Finder.

Local roofing hub

Roofing in Algonquin, IllinoisCity hub

More roof permit pages in Illinois

Arlington Heights, ILRoof permit Aurora, ILRoof permit Barrington, ILRoof permit Batavia, ILRoof permit Belleville, ILRoof permit Roofing in IllinoisState hub

Related guides

Denver-Metro Roofing Permits Filing a Hail Insurance Claim Colorado Hail Season Prep Hiring a Contractor

Building permits in the Village of Algonquin, Illinois, in McHenry and Kane Counties, are issued by the Community Development Department at the Ganek Municipal Center, 2200 Harnish Dr. The Illinois Capital Development Board says "The State has not adopted a building code for repairs to existing single family residences," so Algonquin's roofing rules are its own: Chapter 23 of the Village Code, which the Village hosts on its own site, adopts the 2018 International Residential Code with local modifications, and its permit rule names the installation of roof coverings. This listing covers the office's contact details, the Village's own statements on code and permits, and the rules state law sets for every Illinois roofer.

Working an insurance claim in Algonquin, IL? Everything on this page (drip edge, ice & water shield, inspections, Class 4 rules) formatted as a claim-ready evidence pack: verbatim ordinance quotes, code section cites, verification dates, and official source links, ready to attach to a supplement. See a real sample pack (PDF, 4 pages, free).

Code items like ice & water shield are what adjusters ask you to document.

Buy this jurisdiction's pack: $12 Delivered by email within minutes. Digital download: all sales are final once delivered, except for a failed delivery, a defective file, a duplicate purchase, or a pack materially different from its description. See Section 6 of our Terms of Use.

Questions about the Algonquin, IL pack?

Not ready to buy, or need a different jurisdiction? Tell us and we’ll reply directly.

By submitting, you agree to our Terms of Use and Privacy Policy.

Sources

Roofing questions: Algonquin, IL

Do you need a permit to replace a roof in Algonquin, IL?

Yes, a permit is required to replace a roof in Algonquin, IL. ROOF REPAIR OF 200 SQUARE FEET OR LESS IS EXEMPT; LARGER WORK REQUIRES A PERMIT. Section 23.03 of the Village Code inserts into the Residential Code: "R105.2.2.2 Siding and Roof Repair. The repair or replacement of up to an aggregate total of 200 square feet of roofing material or siding material," as work exempt from permit. The Village's Permit Information page restates it in its "Permit Required?" table: Roof Repair, "No for 200 Sq. Ft. or less."

Is ice & water shield required in Algonquin, IL?

Yes. REQUIRED, IN THE VILLAGE'S OWN ENACTED CLIMATE TABLE. Section 23.03 of the Village Code inserts into Table R301.2(1) "Ice Barrier Underlayment Required" with the entry "Yes." The Village's amendments do not change the IRC's own ice barrier section, whose text this record does not quote.

Do roofing contractors need a license or registration in Algonquin, IL?

Yes.

What building code does Algonquin, IL use?

THE 2018 INTERNATIONAL RESIDENTIAL CODE WITH VILLAGE MODIFICATIONS, CHAPTER 23 OF THE VILLAGE CODE. Section 23.02 states: "The International Residential Code, 2018 edition, and appendices B, C, D, F, J and K" are "hereby adopted by reference and made part of this Section, subject to modifications set forth herein, and shall be applicable to the Village." The modifications are in Section 23.03 of the same chapter (pages dated 7/2/24), which this record read in full: they amend the permit rules, Table R301.2(1) and roof drainage (R801.3), and contain no amendment to the IRC's roof-covering or reroofing sections. The Village's Permit Information page lists the "2018 (IRC) International Residential Code" and says "We have adopted New Building Codes and Fees." Chapter 23 names the 2021 International Energy Conservation Code, while the permit page lists the 2024 edition.