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Commercial Building Permit (Tenant Improvements Included — Filed Under the General Building Permit) in Duncan, Arizona

The Town of Duncan does not maintain a separate commercial-building-permit product, application, or fee line — commercial new construction, renovation, alteration (including tenant improvement work), or demolition is filed under the same single general-purpose Building Permit documented in this file's building-permit entry, using the same 'Application for Building Permit and Inspection' form and the same valuation-based fee formula. This was independently re-verified by fetching the Town's current Schedule of Fees and Charges (Fee-Schedule-5.2026.pdf) and Town Code Chapter 7 (Rev. 6/06) directly: neither document contains a distinct commercial fee line, application, or review track, and no evidence of a genuinely separate tenant-improvement process was found anywhere on the Town's site. The one place Duncan's own code explicitly singles out 'commercial buildings' by name is Article 7-7 (Asbestos): renovation, demolition, or removal of a commercial building requires the Building Permit to be contingent on proof of asbestos-containing-material (ACM) compliance. Projects with an estimated valuation over $50,000 (a threshold many commercial projects will cross) must also list a Contractor Tax License on the combined Zoning/Building/Historic District/Floodplain Permit form.

Verified 2026-07-29 · Source

When you need this permit

  • Commercial construction, renovation, alteration, tenant-improvement, or demolition work is filed under the Town's single general Building Permit — there is no separate commercial-building-permit application, checklist, or fee line, confirmed by direct re-fetch of Town Code Chapter 7 (Rev. 6/06) and the current Schedule of Fees and Charges (Fee-Schedule-5.2026.pdf)
  • Work must conform to the 2006 International Building Code and supplemental Adobe Code, the Town's adopted plumbing/electrical/mechanical codes, and the Town's Zoning Ordinance (Town Code §§ 7-1-1 through 7-1-2, 7-2 through 7-5)
  • Renovation, demolition, or removal of a commercial building containing asbestos-containing materials (ACM) requires the applicant to first obtain a Building Permit that is contingent on proof of ACM compliance: State/Federal safety regulations for persons working in and around ACM; notification and coordination with the Arizona Department of Environmental Quality; an asbestos survey completed by an Arizona State Licensed ACM Contractor; handling/removal of ACM by an Arizona State Licensed ACM Contractor; and disposal at a State-approved ACM landfill (Town Code Article 7-7, Sections 7-7-1, effective 6/11/2001) Contractor
  • Violation of the Article 7-7 asbestos-compliance requirement is a class one misdemeanor, with each day of continued violation a separate offense (Town Code § 7-7-2)
  • Projects with an estimated valuation greater than $50,000 must list a Contractor Tax License on the combined 'Zoning Use, Building, Historic District and Floodplain Permit' form
  • Whenever the Building Permit is issued, the building must also conform to the Town's Zoning Ordinance (Town Code § 7-1-2)
  • Approved in person by the Building Official (Town Manager's office); no online submittal portal or email intake address is published

Required documents

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Fee schedule

Building Permit FeeTown of Duncan Schedule of Fees and Charges (Fee-Schedule-5.2026.pdf, header-labeled 'PROPOSED'), Planning and Zoning section, item 1.B — directly re-fetched and confirmed 2026-07-29. Same fee line as the general building-permit entry in this file; no distinct commercial-building fee line exists anywhere in the schedule.
$30.00 plus $4.11 per $1,000 of valuation
Building Plan ReviewTown of Duncan Schedule of Fees and Charges, Planning and Zoning section, item 1.D
65% of the Building Permit Fee
Building Permit RenewalTown of Duncan Schedule of Fees and Charges, Planning and Zoning section, item 1.C
50% of the original permit fee

Review timeline

Plan review
Not published — contact the department

How long did your Commercial Building Permit (Tenant Improvements Included — Filed Under the General Building Permit) permit actually take in Duncan?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Building Official Inspection(s)

    Town Code Chapter 7 vests all building, plumbing, electrical, and other inspection authority in the Town Manager's office (or authorized deputies); inspections for commercial work are scheduled directly with the Building Official as work progresses, with no named inspection sequence published

See the full Duncan inspection guide — scheduling & re-inspection fees →

Tips

  • Duncan has no distinct commercial-building-permit product — commercial new construction, alteration, and tenant-improvement work all go through the same general 'Application for Building Permit and Inspection' form and the same $30.00 plus $4.11/$1,000-valuation fee formula documented in this file's building-permit entry.
  • The one genuinely commercial-specific legal requirement in Duncan's own code is the Article 7-7 asbestos (ACM) rule: renovating, demolishing, or removing a commercial building requires proof of ACM compliance (licensed asbestos survey, ADEQ coordination, licensed handling/removal, approved disposal) before the Building Permit will issue — budget extra lead time if your commercial project involves an older building that may contain ACM.
  • If your commercial project's estimated valuation exceeds $50,000, remember to list a Contractor Tax License on the combined Zoning Use, Building, Historic District and Floodplain Permit form.
  • As with every other Duncan permit type, no review-timeframe figure is published; call Town Hall (928-359-2791) for a project-specific estimate before committing to a schedule.

Frequently asked questions

Duncan requires a commercial building permit (tenant improvements included — filed under the general building permit) for: Commercial construction, renovation, alteration, tenant-improvement, or demolition work is filed under the Town's single general Building Permit — there is no separate commercial-building-permit application, checklist, or fee line, confirmed by direct re-fetch of Town Code Chapter 7 (Rev. 6/06) and the current Schedule of Fees and Charges (Fee-Schedule-5.2026.pdf); Work must conform to the 2006 International Building Code and supplemental Adobe Code, the Town's adopted plumbing/electrical/mechanical codes, and the Town's Zoning Ordinance (Town Code §§ 7-1-1 through 7-1-2, 7-2 through 7-5); Renovation, demolition, or removal of a commercial building containing asbestos-containing materials (ACM) requires the applicant to first obtain a Building Permit that is contingent on proof of ACM compliance: State/Federal safety regulations for persons working in and around ACM; notification and coordination with the Arizona Department of Environmental Quality; an asbestos survey completed by an Arizona State Licensed ACM Contractor; handling/removal of ACM by an Arizona State Licensed ACM Contractor; and disposal at a State-approved ACM landfill (Town Code Article 7-7, Sections 7-7-1, effective 6/11/2001); Violation of the Article 7-7 asbestos-compliance requirement is a class one misdemeanor, with each day of continued violation a separate offense (Town Code § 7-7-2); Projects with an estimated valuation greater than $50,000 must list a Contractor Tax License on the combined 'Zoning Use, Building, Historic District and Floodplain Permit' form; Whenever the Building Permit is issued, the building must also conform to the Town's Zoning Ordinance (Town Code § 7-1-2); Approved in person by the Building Official (Town Manager's office); no online submittal portal or email intake address is published. If your project isn't listed, confirm with Town of Duncan Town Hall — Building Official (Town Manager's Office) at 928-359-2791 before starting work.

In Duncan, the published Building Permit Fee is: $30.00 plus $4.11 per $1,000 of valuation. Additional published fees: Building Plan Review — 65% of the Building Permit Fee; Building Permit Renewal — 50% of the original permit fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Duncan does not publish a plan-review timeline for this permit. Contact Town of Duncan Town Hall — Building Official (Town Manager's Office) at 928-359-2791 for current turnaround.

You'll need: Application for Building Permit and Inspection. Depending on your project, Duncan may also ask for: Zoning Use, Building, Historic District and Floodplain Permit; Asbestos (ACM) Compliance Documentation. See the required-documents checklist on this page for details on each.

Apply through Town of Duncan Town Hall — Building Official (Town Manager's Office) at 506 SE Old West Highway, P.O. Box 916, Duncan, AZ 85534. Phone: 928-359-2791. Office hours: Monday - Thursday, 8:00 a.m. - 5:30 p.m. (excluding federal holidays); fax 928-359-9146, TTY 800-367-8939. No online permitting portal or email intake address is published — applications are submitted in person or by mail to Town Hall using the paper 'Application for Building Permit and Inspection' form and, where zoning/historic-district/floodplain review also applies, the combined 'Zoning Use, Building, Historic District and Floodplain Permit' form.. Official information: https://duncanaz.us/home/services/building-permits-fees/.

No. Commercial construction, renovation, alteration, or demolition is filed under the Town's single general Building Permit — the same application, fee formula ($30.00 plus $4.11 per $1,000 of valuation), and review process used for any other building-permit work in Town.

No. Duncan has no standalone tenant-improvement permit or fee line — TI work is filed as an 'Alteration' or 'Repair' on the same general Application for Building Permit and Inspection form used for all other building-permit work.

If the building contains asbestos-containing materials (ACM), Town Code Article 7-7 requires proof of ACM compliance — an asbestos survey by an Arizona State Licensed ACM Contractor, coordination with the Arizona Department of Environmental Quality, licensed handling/removal, and disposal at a State-approved ACM landfill — before the Town will issue the Building Permit.

Sources & verification

Verified against official sources. Last reviewed 2026-07-29.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Duncan building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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