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Permitting Authorities / Arizona / Town of Gilbert - Development Services Department, Plan Review & Inspection

Do you need a permit to replace a roof in Gilbert, AZ?

Adopted code

Town of Gilbert - Development Services Department, Plan Review & Inspection

No, Gilbert, AZ does not require a permit for like-for-like roof replacement (Town of Gilbert - Development Services Department, Plan Review & Inspection). The Town's 2018 Code Amendments, Section 10-31-4 (Amendments to the International Residential Code), amend R105.2 "Work exempt from permit" by adding to the Building list: "14. Added to read - Re-roofing not requiring a structural change." The same item is added to the IBC exemption list in Section 10-31-3. A reroof that needs a structural change is outside that exemption; the Town's pages read here do not say what that case requires beyond the permit exemption not applying.

Roof code checklist: Gilbert, AZ

ItemAnswerCode citeSourceVerified
Permit to replace a roofNogilbertaz.gov2026-10-25
Repair permit thresholdPublishedR105.2gilbertaz.gov2026-10-25
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeNot published
Ice & water shieldNogilbertaz.gov2026-10-25
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNot published
Wind design criteriaPublishedgilbertaz.gov2026-10-25
Adopted codePublishedSec. 10-31gilbertaz.gov2026-10-25
Contractor license / registrationYesazleg.gov2026-10-25
Sales & use taxPublishedSec. 32-1121TPT_RATETABLE_10012026.pdf2026-10-25

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
Town of Gilbert, Arizona
Jurisdiction type
city
Address
90 E. Civic Center Drive, Gilbert, AZ 85296
Contact
  • url: https://www.gilbertaz.gov/departments/development-services/plan-review-inspection
  • phone: 480-503-6700
Permit portal
Permit portal
Roofing permit required
Not required
Contractor registration required
Required
Registration details
  • license: STATE LAYER, applies in Gilbert as everywhere in Arizona. Contractors are licensed by the Arizona Registrar of Contractors under A.R.S. Title 32, Chapter 10 (32-1101 et seq.). A.R.S. 32-1121(A)(14) exempts an unlicensed person only for one project whose aggregate contract price, including labor and materials, is "less than $1,000" and whose work is "of a casual or minor nature," and says the exemption "does not apply: (a) In any case in which the performance of the work requires a local building permit." The Town's permits page adds that for work in a commercial building "an Arizona licensed contractor must do it." The specific roofing classification codes and the Registrar's own licensing page were not read for this record.
Permit process note
The Town's 2018 Code Amendments, Section 10-31-4 (Amendments to the International Residential Code), amend R105.2 "Work exempt from permit" by adding to the Building list: "14. Added to read - Re-roofing not requiring a structural change." The same item is added to the IBC exemption list in Section 10-31-3. A reroof that needs a structural change is outside that exemption; the Town's pages read here do not say what that case requires beyond the permit exemption not applying.
Adopted code
The Town's Plan Review & Inspection page lists "The following codes are effective January 1, 2020": "2018 International Building Code," "2018 International Residential Code," "2017 National Electrical Code" and the Town's "2018 Code Amendments." The Town's Technical Codes (Section 10-31, Building Code, 2020 Edition) adopt "the 2018 Residential Code, together with Appendices H, P, and Q thereto, as amended" by the Town. The Town's Building Code Adoption Dates sheet lists the 1/01/2020 adoption of the 2018 IBC, 2018 IRC, and the 2017 NEC as Ordinance 2739. The permits page also links a "DRAFT 2026 Technical Code Reference for the 2024 Code Amendments (Not adopted at this time, coming soon January 2027)." The 2018 edition is therefore the one in force as of the Town's pages read here.
Ice & water shield
Not required — The Town's Table R301.2(1) amendment prints "Ice Shield Under-Layment Required: No" and "Ground Snow Load: N/A." About ice & water barrier
Repair permit threshold
No dollar or square-footage threshold appears in the Town's amendments. The test is whether the re-roofing needs a structural change: the Town's R105.2 amendment exempts "Re-roofing not requiring a structural change." The Town's pages read here define neither "structural change" nor a size limit.
Wind design criteria
The Town's 2018 Code Amendments, Table R301.2(1), insert for Gilbert: "Wind speed: 115 (ULT). 89 (ASD)," "Topographic effects: No," "Special wind region: No," and "Windborne debris zone: No." Other values in the same table: Ground Snow Load N/A, Seismic Design Category B, Weathering NEGLIGIBLE, Frost Line Depth 0, Winter Design Temperature 34 degrees F, Mean Annual Temp. 69 degrees F.
Sales & use tax
Roofing is taxed in Arizona as Prime Contracting (business code 015) under the Transaction Privilege Tax, not as a retail sale. The Arizona Department of Revenue Transaction Privilege and Other Tax Rate Tables effective October 1, 2026 list Contracting - Prime at 6.30% for Maricopa County (the 5.6% state rate plus the county rate) and at 2.00% for the Town of Gilbert (city code GB), a combined 8.30%. A.R.S. 42-5075(B) sets the tax base at "sixty-five percent of the gross proceeds of sales or gross income derived from the business," so the 8.30% applies to 65% of contract income. The same statute excludes from the classification "any work or operation performed by a person that is not required to be licensed by the registrar of contractors pursuant to section 32-1121."

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Gilbert, Arizona is a town in Maricopa County that issues building permits through its Development Services Department, Plan Review & Inspection, at 90 E. Civic Center Drive. The Town's Plan Review & Inspection page lists the codes "effective January 1, 2020" as the 2018 International Residential Code and the 2018 International Building Code, with the Town's "2018 Code Amendments." The Town's permits page lists a draft 2026 reference for the 2024 codes marked "Not adopted at this time, coming soon January 2027." Arizona has no statewide building code, so Gilbert's own adoption controls. This listing covers the office's contact details, the adopted code edition, the reroof permit exemption, the wind and ice-shield design values in the Town's Table R301.2 amendment, and the state licensing and tax rules that apply to a roofer working in Gilbert.

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Sources

Roofing questions: Gilbert, AZ

Do you need a permit to replace a roof in Gilbert, AZ?

No, Gilbert, AZ does not require a permit to replace a roof. No dollar or square-footage threshold appears in the Town's amendments. The test is whether the re-roofing needs a structural change: the Town's R105.2 amendment exempts "Re-roofing not requiring a structural change." The Town's pages read here define neither "structural change" nor a size limit.

Is ice & water shield required in Gilbert, AZ?

No. The Town's Table R301.2(1) amendment prints "Ice Shield Under-Layment Required: No" and "Ground Snow Load: N/A."

Do roofing contractors need a license or registration in Gilbert, AZ?

Yes. STATE LAYER, applies in Gilbert as everywhere in Arizona. Contractors are licensed by the Arizona Registrar of Contractors under A.R.S. Title 32, Chapter 10 (32-1101 et seq.). A.R.S. 32-1121(A)(14) exempts an unlicensed person only for one project whose aggregate contract price, including labor and materials, is "less than $1,000" and whose work is "of a casual or minor nature," and says the exemption "does not apply: (a) In any case in which the performance of the work requires a local building permit." The Town's permits page adds that for work in a commercial building "an Arizona licensed contractor must do it." The specific roofing classification codes and the Registrar's own licensing page were not read for this record.

What building code does Gilbert, AZ use?

The Town's Plan Review & Inspection page lists "The following codes are effective January 1, 2020": "2018 International Building Code," "2018 International Residential Code," "2017 National Electrical Code" and the Town's "2018 Code Amendments." The Town's Technical Codes (Section 10-31, Building Code, 2020 Edition) adopt "the 2018 Residential Code, together with Appendices H, P, and Q thereto, as amended" by the Town. The Town's Building Code Adoption Dates sheet lists the 1/01/2020 adoption of the 2018 IBC, 2018 IRC, and the 2017 NEC as Ordinance 2739. The permits page also links a "DRAFT 2026 Technical Code Reference for the 2024 Code Amendments (Not adopted at this time, coming soon January 2027)." The 2018 edition is therefore the one in force as of the Town's pages read here.