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Permitting Authorities / Illinois / Village of Wilmette Community Development Department

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

Adopted code

Village of Wilmette Community Development Department

Yes, a permit is required to replace a roof in Wilmette, IL, issued by Village of Wilmette Community Development Department. WORK WITHOUT A PERMIT IS STOPPED AND SURCHARGED. The Village's permits list says "Wilmette requires property owners to apply for permits prior to the commencement of work on the property," and "If a permit is not obtained: the work will be stopped until a permit is issued, a surcharge will be added to the cost of the permit, and any work performed without a permit may be subject to removal at the inspector's determination." The Residential Permits page says "When in doubt, please contact the Community Development Department.".

Roof code checklist: Wilmette, IL

ItemAnswerCode citeSourceVerified
Permit to replace a roofYeswilmette.gov2026-10-17
Repair permit thresholdPublishedwilmette.gov2026-10-17
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeNot published
Ice & water shieldNot published
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNot published
Wind design criteriaNot published
Adopted codePublishedwilmette.gov2026-10-17
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 Wilmette, Illinois
Jurisdiction type
city
Address
1200 Wilmette Avenue, Wilmette, IL 60091
Contact
  • url: https://www.wilmette.gov/164/Community-Development
  • phone: 847-853-7550
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.
  • city_level: A VILLAGE CONTRACTOR'S LICENSE ON TOP OF THE STATE LICENSE. The Village's Contractor Licensing & Requirements page says "All contractors on a building permit must have a Wilmette contractors' license before a building permit will be issued," that "The contractors' license is effective for a calendar year and must be renewed annually," and that the application carries a "license fee of $80." It adds "Roofing contractors must provide a current copy of their state roofing license."
Permit process note
WORK WITHOUT A PERMIT IS STOPPED AND SURCHARGED. The Village's permits list says "Wilmette requires property owners to apply for permits prior to the commencement of work on the property," and "If a permit is not obtained: the work will be stopped until a permit is issued, a surcharge will be added to the cost of the permit, and any work performed without a permit may be subject to removal at the inspector's determination." The Residential Permits page says "When in doubt, please contact the Community Development Department."
Adopted code
THE 2018 INTERNATIONAL RESIDENTIAL CODE, AS AMENDED, PER THE VILLAGE'S OWN CODES PAGE. The Village's Village Codes page says "The Village of Wilmette has adopted the following building and related codes," listing "2018 International Building Code , as amended" and "2018 International Residential Code , as amended," and says "Local amendments to the model codes are contained in Chapter 8 of the Wilmette Village Code." This record did not read Chapter 8, so it does not state whether the Village has amended the IRC's roof provisions.
Repair permit threshold
A PERMIT FOR ANY NEW ROOF AND FOR A ROOF REPAIR OVER 100 SQUARE FEET. The Village's permits list, Building Permits For Your Protection, says "The following require permits in Wilmette," and under "Roofs" lists "Roofs (new and repair over 100" square feet, with a "Class C or better fire rating." The Village's Residential Permits page lists "Roofing" under "Work requiring a permit," and lists "Gutters and downspouts" among the residential work for which permits are not required.
Sales & use tax
Illinois taxes the roofer, not the job, and the operative rate is not keyed to the Wilmette 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.

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Building permits in the Village of Wilmette, Illinois, in Cook County, are issued by the Village's Community Development Department at Village Hall, 1200 Wilmette Avenue. The Illinois Capital Development Board says "The State has not adopted a building code for repairs to existing single family residences," so Wilmette's roofing rules are its own: the Village's Codes page lists the 2018 International Residential Code, as amended. The Village lists roofing among the work that needs a permit, with a 100 square foot line for repairs; 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 Wilmette, 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).

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Sources

Roofing questions: Wilmette, IL

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

Yes, a permit is required to replace a roof in Wilmette, IL. A PERMIT FOR ANY NEW ROOF AND FOR A ROOF REPAIR OVER 100 SQUARE FEET. The Village's permits list, Building Permits For Your Protection, says "The following require permits in Wilmette," and under "Roofs" lists "Roofs (new and repair over 100" square feet, with a "Class C or better fire rating." The Village's Residential Permits page lists "Roofing" under "Work requiring a permit," and lists "Gutters and downspouts" among the residential work for which permits are not required.

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

Yes.

What building code does Wilmette, IL use?

THE 2018 INTERNATIONAL RESIDENTIAL CODE, AS AMENDED, PER THE VILLAGE'S OWN CODES PAGE. The Village's Village Codes page says "The Village of Wilmette has adopted the following building and related codes," listing "2018 International Building Code , as amended" and "2018 International Residential Code , as amended," and says "Local amendments to the model codes are contained in Chapter 8 of the Wilmette Village Code." This record did not read Chapter 8, so it does not state whether the Village has amended the IRC's roof provisions.