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Permitting Authorities / Illinois / City of Oak Forest Building Department

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

Adopted code

City of Oak Forest Building Department

Yes, a permit is required to replace a roof in Oak Forest, IL, issued by City of Oak Forest Building Department. A ROOFING PERMIT, A REGISTERED CONTRACTOR, A SIGNED CONTRACT AND A SHEATHING INSPECTION. The City's Improvement Projects page says "Property owners or contractors must obtain permit from the City before performing any improvement projects" and lists "Roofing" among the projects that need one. The City's Roofing Guide sets the procedure: "Submit completed Building Permit Application," "Complete Contractor Registration prior to issuance of permit" and "Provide signed contractor contract/proposal." It says "Homeowners may install roof covering but are required to perform the work," and "Overlay of an existing roof covering requires approval prior to permit issuance." Fees: "Permit: $135" and "Failed, missed and/or re-inspection: $60." The Building Permits page says "we require 48-72 hour notice for all inspections.".

Roof code checklist: Oak Forest, IL

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesoak-forest.org2026-10-17
Repair permit thresholdNot published
Layer limit / roof-overPublishedR907.3oak-forest.org2026-10-17
Deck & sheathingPublishedoak-forest.org2026-10-17
Drip edgeNot published
Ice & water shieldYesR905.2.7.1oak-forest.org2026-10-17
Mid-roof inspectionYesoak-forest.org2026-10-17
Impact-resistant (Class 4) roofingNot published
Wind design criteriaNot published
Adopted codePublishedoak-forest.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
City of Oak Forest, Illinois
Jurisdiction type
city
Address
15440 S. Central Avenue, Oak Forest, IL 60452
Contact
  • url: https://www.oak-forest.org/208/Building-Permits
  • phone: 708-687-4050
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 CITY REGISTRATION AND BOND ON TOP OF THE STATE LICENSE. The City's Contractor Registration page says "Any contractor performing work within the City of Oak Forest shall first be registered with the City" and "Building Permits will not be issued until all contractors associated with the construction project are registered." It requires a "$10,000 License & Permit Bond," a certificate of insurance, and for roofing contractors a "Copy of IDFPR Licensed Roofing Contractor Registration." Registration runs one year; "General Contractors are charged $350 annually, while subcontractors are charged $100 annually per trade."
Permit process note
A ROOFING PERMIT, A REGISTERED CONTRACTOR, A SIGNED CONTRACT AND A SHEATHING INSPECTION. The City's Improvement Projects page says "Property owners or contractors must obtain permit from the City before performing any improvement projects" and lists "Roofing" among the projects that need one. The City's Roofing Guide sets the procedure: "Submit completed Building Permit Application," "Complete Contractor Registration prior to issuance of permit" and "Provide signed contractor contract/proposal." It says "Homeowners may install roof covering but are required to perform the work," and "Overlay of an existing roof covering requires approval prior to permit issuance." Fees: "Permit: $135" and "Failed, missed and/or re-inspection: $60." The Building Permits page says "we require 48-72 hour notice for all inspections."
Adopted code
THE 2018 INTERNATIONAL RESIDENTIAL CODE, PER THE CITY'S OWN CODES PAGE. The City's Building Codes page says "The City of Oak Forest has adopted the following codes in order to ensure minimum life safety standards in the built environment," and lists "International Building Code, 2018 edition," "International Residential Code, 2018 edition" and "International Energy Conservation Code, 2021." Any local amendments would sit in the City's Municipal Code, which this record did not read, so it does not state whether the City has amended the IRC's roof provisions beyond what its Roofing Guide says.
Ice & water shield
Required — REQUIRED, IN THE CITY'S OWN WRITTEN WORDS. The City's Roofing Guide says "Self-adhering roof underlayment (ice and water shield) must extend from the eave's edge to point at least" 24 inches "inside the interior wall line of building." Its Residential Roofing Minimum General Requirements, under "ICE BARRIER REQUIRED R905.2.7.1," say "At least two layers of underlayment cemented together or a self-adhering polymer modified bitumen sheet, shall be used in lieu of normal underlayment and extend from the lowest edges of all roof surfaces to a point at least" 24 inches "inside the exterior wall line of the building." The guide's two passages name the interior wall line and the exterior wall line respectively. This rests on the Building Department's own written guide; the City's enacted amendments were not read. About ice & water barrier
Mid-roof inspection
Required — REQUIRED, IN THE CITY'S OWN WRITTEN WORDS. Under "Inspections Required," the City's Roofing Guide lists "Sheathing inspection - prior to underlayment installation." This rests on the Building Department's own written guide; the City's enacted amendments were not read.
Roof layer limit / recover
TWO LAYERS MAXIMUM, AND A TEAR-OFF WHERE SHINGLES HAVE MODERATE TO SEVERE HAIL DAMAGE, PER THE CITY'S OWN ROOFING GUIDE. Under "Recovering Versus Replacement R907.3," the guide says "New roof coverings shall not be installed without first removing existing roof coverings where any of the following conditions occur," and lists "Where the existing roof has two or more applications of any type of roof covering," "Where the existing roof is wood shake, slate, clay, cement, or asbestos" tile, and "For asphalt shingles, where roof shingles have moderate to severe hail damage." The guide's procedure adds that "Overlay of an existing roof covering requires approval prior to permit issuance." This rests on the Building Department's own written guide; the City's enacted amendments were not read.
Deck & sheathing requirements
THE CITY'S ROOFING GUIDE STATES THE SHEATHING RULE. Under "ROOF SHEATHING R803.2," it says "If sheathing replacement is required, minimum" one-half-inch "CDX plywood or equivalent shall be applied directly to studs spaced no more than" 24 inches "on center," and "Panels shall be installed with the face grain perpendicular to the studs." Its construction requirements add "Entire roof sheathing system shall be clean and dry prior to roof covering." The guide also says "All roof coverings must be installed per the manufacturer's installation specifications" and "Caulking is not an approved substitute for flashing."
Sales & use tax
Illinois taxes the roofer, not the job, and the operative rate is not keyed to the Oak Forest 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

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Building permits in the City of Oak Forest, Illinois, in Cook County, are handled by the City's Building Department, which the City says is responsible for reviewing construction plans, issuing building permits and inspecting completed work; City Hall is at 15440 S. Central Avenue. The Illinois Capital Development Board says "The State has not adopted a building code for repairs to existing single family residences," so Oak Forest's roofing rules are its own: the City's Building Codes page lists the 2018 International Residential Code. The City publishes its own Roofing Guide, with a sheathing inspection, an ice barrier and a tear-off rule; this listing covers the office's contact details, the City's own statements on code and permits, and the rules state law sets for every Illinois roofer.

Working an insurance claim in Oak Forest, 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: Oak Forest, IL

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

Yes, a permit is required to replace a roof in Oak Forest, IL.

Is ice & water shield required in Oak Forest, IL?

Yes. REQUIRED, IN THE CITY'S OWN WRITTEN WORDS. The City's Roofing Guide says "Self-adhering roof underlayment (ice and water shield) must extend from the eave's edge to point at least" 24 inches "inside the interior wall line of building." Its Residential Roofing Minimum General Requirements, under "ICE BARRIER REQUIRED R905.2.7.1," say "At least two layers of underlayment cemented together or a self-adhering polymer modified bitumen sheet, shall be used in lieu of normal underlayment and extend from the lowest edges of all roof surfaces to a point at least" 24 inches "inside the exterior wall line of the building." The guide's two passages name the interior wall line and the exterior wall line respectively. This rests on the Building Department's own written guide; the City's enacted amendments were not read.

Can you roof over an existing roof in Oak Forest, IL?

TWO LAYERS MAXIMUM, AND A TEAR-OFF WHERE SHINGLES HAVE MODERATE TO SEVERE HAIL DAMAGE, PER THE CITY'S OWN ROOFING GUIDE. Under "Recovering Versus Replacement R907.3," the guide says "New roof coverings shall not be installed without first removing existing roof coverings where any of the following conditions occur," and lists "Where the existing roof has two or more applications of any type of roof covering," "Where the existing roof is wood shake, slate, clay, cement, or asbestos" tile, and "For asphalt shingles, where roof shingles have moderate to severe hail damage." The guide's procedure adds that "Overlay of an existing roof covering requires approval prior to permit issuance." This rests on the Building Department's own written guide; the City's enacted amendments were not read.

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

Yes.

What building code does Oak Forest, IL use?

THE 2018 INTERNATIONAL RESIDENTIAL CODE, PER THE CITY'S OWN CODES PAGE. The City's Building Codes page says "The City of Oak Forest has adopted the following codes in order to ensure minimum life safety standards in the built environment," and lists "International Building Code, 2018 edition," "International Residential Code, 2018 edition" and "International Energy Conservation Code, 2021." Any local amendments would sit in the City's Municipal Code, which this record did not read, so it does not state whether the City has amended the IRC's roof provisions beyond what its Roofing Guide says.

Is a mid-roof inspection required in Oak Forest, IL?

Yes. REQUIRED, IN THE CITY'S OWN WRITTEN WORDS. Under "Inspections Required," the City's Roofing Guide lists "Sheathing inspection - prior to underlayment installation." This rests on the Building Department's own written guide; the City's enacted amendments were not read.