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Permitting Authorities / Illinois / Village of Mount Prospect Building & Inspection Services Division

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

Adopted code

Village of Mount Prospect Building & Inspection Services Division

Yes, a permit is required to replace a roof in Mount Prospect, IL, issued by Village of Mount Prospect Building & Inspection Services Division. A RESIDENTIAL ROOF IS PERMITTED ONLINE OR IN PERSON AT A $75 FLAT FEE, WITH A FINAL INSPECTION. The Division's Residential Roof Supplement lists its "PERMIT SUBMITTAL REQUIREMENTS- ONLINE OR IN PERSON": "APPLY ONLINE go to www.mountprospect.org/permits upload documents listed below," or, in person, the "Building Permit Application completed & signed by contractor and homeowner," plus "A Copy of the signed Estimate between the homeowner and contractor," "A detailed scope of work if owner doing all the work," and a "Copy of State issued Driver's License of Roofing Contractor applying for permit." It states "A final inspection is required." The Village's Residential Fee Code page lists "$75 each for fences, roofs and sheds." The Division's page says to "Call (847) 870-5675 to schedule at least 24 - 48 hours in advance" and that "Construction Hours are Monday - Sunday 7 a.m. - 7 p.m." The supplement also requires that "Shingles must meet ASTM D 3462 standard," that "Sidewall & Masonry flashings are required to be made of metal or lead," and that "If the existing roof is missing ventilation, then the new roof is to be correctly vented per code," at "1 sq.ft. per 150 sq. ft. of ceiling square footage" or "1 sq. ft. per 300 sq. ft. of ceiling square footage" when vents are in the upper 3 feet of the roof.

Roof code checklist: Mount Prospect, IL

ItemAnswerCode citeSourceVerified
Permit to replace a roofYes2026 Residential Roo.pdf2026-10-17
Repair permit thresholdNot published
Layer limit / roof-overPublished2026 Residential Roo.pdf2026-10-17
Deck & sheathingNot published
Drip edgeNot published
Ice & water shieldYes2026 Residential Roo.pdf2026-10-17
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNot published
Wind design criteriaNot published
Adopted codePublishedmountprospect.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 Mount Prospect, Illinois
Jurisdiction type
city
Address
50 S. Emerson Street, Mount Prospect, IL 60056
Contact
  • url: https://www.mountprospect.org/departments/community_development/about_the_department/index.php
  • phone: 847-870-5675
Permit portal
Permit portal
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
A RESIDENTIAL ROOF IS PERMITTED ONLINE OR IN PERSON AT A $75 FLAT FEE, WITH A FINAL INSPECTION. The Division's Residential Roof Supplement lists its "PERMIT SUBMITTAL REQUIREMENTS- ONLINE OR IN PERSON": "APPLY ONLINE go to www.mountprospect.org/permits upload documents listed below," or, in person, the "Building Permit Application completed & signed by contractor and homeowner," plus "A Copy of the signed Estimate between the homeowner and contractor," "A detailed scope of work if owner doing all the work," and a "Copy of State issued Driver's License of Roofing Contractor applying for permit." It states "A final inspection is required." The Village's Residential Fee Code page lists "$75 each for fences, roofs and sheds." The Division's page says to "Call (847) 870-5675 to schedule at least 24 - 48 hours in advance" and that "Construction Hours are Monday - Sunday 7 a.m. - 7 p.m." The supplement also requires that "Shingles must meet ASTM D 3462 standard," that "Sidewall & Masonry flashings are required to be made of metal or lead," and that "If the existing roof is missing ventilation, then the new roof is to be correctly vented per code," at "1 sq.ft. per 150 sq. ft. of ceiling square footage" or "1 sq. ft. per 300 sq. ft. of ceiling square footage" when vents are in the upper 3 feet of the roof.
Adopted code
THE 2021 INTERNATIONAL RESIDENTIAL CODE, ADOPTED FEBRUARY 15, 2022, PER THE DIVISION'S OWN PAGE. Under "Building Codes," the Building & Inspection Services page reads "Adopted February 15, 2022" and lists the "2021 International Building Code (IBC)," the "2021 International Residential Code (IRC)" and the "IL Energy Conservation Code (IECC)." The Village's local amendments are linked from that page to the Village Code hosted off the Village's site, which this record did not read, so it does not state whether the Village has amended the IRC's roof provisions beyond what the Division's own Residential Roof Supplement says.
Ice & water shield
Required — REQUIRED ON ANY SHINGLE ROOF, IN THE DIVISION'S OWN WRITTEN WORDS. The Village's Residential Roof Supplement (2026) states: "Ice and water shield is required for any shingle roof. Ice and water shield must extend from the eave's edge to a point at least 24 inches inside the exterior wall of the structure (inside wall face)." This rests on the department's own written sheet; the Village's enacted amendment text was not read for this record. About ice & water barrier
Roof layer limit / recover
TWO LAYERS OF SHINGLES AT MOST, PER THE DIVISION'S OWN SHEET. The Village's Residential Roof Supplement (2026) states: "No more than two layers of roofing shingles are allowed." This rests on the department's own written sheet; the Village's enacted amendment text was not read for this record.
Sales & use tax
Illinois taxes the roofer, not the job, and the operative rate is not keyed to the Mount Prospect 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 Mount Prospect, Illinois, in Cook County, are issued by the Building & Inspection Services Division of the Community Development Department at Village Hall, 50 S. Emerson Street. The Illinois Capital Development Board says "The State has not adopted a building code for repairs to existing single family residences," so Mount Prospect's roofing rules are its own: the Division's page lists the 2021 International Residential Code among the building codes adopted February 15, 2022, and the Division publishes its own Residential Roof Supplement. 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 Mount Prospect, 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.

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Sources

Roofing questions: Mount Prospect, IL

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

Yes, a permit is required to replace a roof in Mount Prospect, IL.

Is ice & water shield required in Mount Prospect, IL?

Yes. REQUIRED ON ANY SHINGLE ROOF, IN THE DIVISION'S OWN WRITTEN WORDS. The Village's Residential Roof Supplement (2026) states: "Ice and water shield is required for any shingle roof. Ice and water shield must extend from the eave's edge to a point at least 24 inches inside the exterior wall of the structure (inside wall face)." This rests on the department's own written sheet; the Village's enacted amendment text was not read for this record.

Can you roof over an existing roof in Mount Prospect, IL?

TWO LAYERS OF SHINGLES AT MOST, PER THE DIVISION'S OWN SHEET. The Village's Residential Roof Supplement (2026) states: "No more than two layers of roofing shingles are allowed." This rests on the department's own written sheet; the Village's enacted amendment text was not read for this record.

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

Yes.

What building code does Mount Prospect, IL use?

THE 2021 INTERNATIONAL RESIDENTIAL CODE, ADOPTED FEBRUARY 15, 2022, PER THE DIVISION'S OWN PAGE. Under "Building Codes," the Building & Inspection Services page reads "Adopted February 15, 2022" and lists the "2021 International Building Code (IBC)," the "2021 International Residential Code (IRC)" and the "IL Energy Conservation Code (IECC)." The Village's local amendments are linked from that page to the Village Code hosted off the Village's site, which this record did not read, so it does not state whether the Village has amended the IRC's roof provisions beyond what the Division's own Residential Roof Supplement says.