Commercial Building Permit (New Construction / Tenant Improvement) — Thatcher, Arizona · Requirements sheet
Verified 2026-08-01 · Source: https://www.thatcher.az.gov/departments/planning-zoning
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Commercial Building Permit (New Construction / Tenant Improvement) in Thatcher, Arizona
Required for new commercial construction and for remodels/tenant improvements of existing commercial space within Thatcher town limits. Thatcher administers commercial building permitting itself through its own Community Development/Engineering Department (Building Inspector, vested as Building Official under Code of Ordinances § 150.15) — it does NOT route commercial building safety or plan review to Graham County or a third-party contractor. There is no separate commercial application: the Town's iWorq Citizen Portal (verified live 2026-08-01) offers exactly five application categories, and its single 'Building, Addition, Remodel, Outbuilding, and Pool Permit Application' is described by the Town as covering 'a residential or commercial building, addition, remodel, outbuilding, or pool permit.' New commercial work is reviewed under the 2015 IBC as amended by the Town; alterations/tenant improvements to existing buildings fall under the 2015 International Existing Building Code, adopted with no local amendments (§ 150.08).
Verified 2026-08-01 · Source
When you need this permit
- Building permit required for new commercial construction, commercial additions, and remodels/tenant improvements, administered by the Town's own Building Inspector (Code of Ordinances § 150.15 vests the Building Official/Administrative Authority in the Office of the Building Inspector) — not Graham County
- Apply via the iWorq Citizen Portal's combined 'Building, Addition, Remodel, Outbuilding, and Pool Permit Application' (thatcherpermitting.portal.iworq.net/THATCHER/new-permit/600/4522) — the same application used for residential; required uploads are plans in PDF format plus contractor documentation and licenses
- New commercial construction reviewed under the 2015 IBC as adopted and amended (§ 150.01): automatic fire sprinklers required for occupancy areas of all new structures with total floor area exceeding 7,500 sq ft, AND for occupancy areas within existing structures when additions or alterations result in a gross floor area of 7,500 sq ft or more of the total floor area (this does not exempt occupancies for which the adopted IBC itself requires sprinklers below 7,500 sq ft)
- Town-wide height caps (§ 150.01(B)(2)): no building may exceed 45 feet from grade to the highest point, or 30 feet from grade to the top of the highest outside wall
- Tenant improvements / alterations of existing buildings are governed by the 2015 International Existing Building Code, adopted by reference with no local amendments (§ 150.08)
- Trade work under the 2014 NEC (§ 150.03), 2015 IPC (§ 150.02), 2015 IMC (§ 150.04), and 2015 IFGC (§ 150.07) as adopted/amended; fire-safety review under the 2015 IFC as amended (§ 150.05) — no new building permits for shake/wood shingle roofing except repairs or additions under 20% of existing floor area
- Accessibility (§ 150.13): standards applicable to public accommodations and commercial facilities under Arizona's disability-access statute (A.R.S. § 41-1492.03) are incorporated into the Town's building codes, applying to new construction and alterations
- The building must conform to the Zoning Ordinance in addition to Chapter 150 building codes (§ 150.14); commercial zones carry specific rules such as the cargo-container appearance/site-plan-review requirements in Zoning Ordinance § 13.8.C
- No energy-code compliance path is locally enforced: the 2009 IECC was explicitly rescinded (§ 150.09) and IBC § 110.3.7 (Energy Efficiency Inspections) was deleted
Required documents
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Fee schedule
Review timeline
Inspection process
- 1
Foundation/Footing
Before concrete pour, per the 2015 IBC as adopted
- 2
Underground Plumbing/Electrical
Below-slab plumbing (12-inch minimum sewer depth per the Town's amendment) and any under-slab electrical before cover
- 3
Framing / Rough Trades
Structural framing plus rough electrical (2014 NEC), plumbing (2015 IPC), and mechanical (2015 IMC) before walls are closed
- 4
Final
Completed work verified against approved plans, including fire-safety items under the 2015 IFC as amended and accessibility items per § 150.13, before occupancy
See the full Thatcher inspection guide — scheduling & re-inspection fees →
Tips
- Tenant improvement is NOT a distinct permit type in Thatcher — verified live 2026-08-01: the iWorq Citizen Portal offers exactly five application categories (Building/Addition/Remodel/Outbuilding/Pool; Infrastructure; Sign; Underground Work; Solar/Electrical/Gas/Plumbing), and no TI-specific or commercial-specific application, fee, or timeline is published anywhere. A commercial TI is applied for as remodel scope on the same combined building permit application and is reviewed under the 2015 IEBC, which the Town adopted with no local amendments (§ 150.08). No separate commercial-tenant-improvement-permit entry is warranted for this jurisdiction.
- TI planners: the Town's sprinkler amendment (§ 150.01(B)(1)) is triggered by additions or alterations that result in a gross floor area of 7,500 sq ft or more of TOTAL floor area — an alteration/expansion that pushes an existing building past that threshold makes automatic sprinklers mandatory for its occupancy areas, on top of anything the unamended 2015 IBC already requires below the threshold.
- No commercial site-plan checklist is published — the only checklist linked from the portal's building-permit application is the 'Single Residence Site Plan Checklist' (verified live 2026-08-01). Confirm commercial site-plan submittal expectations directly with the Building Inspector (928-428-2290) before drawing.
- The inspection sequence listed here reflects the adopted 2015 IBC/trade-code framework; Thatcher publishes no commercial-specific inspection-sequence document — confirm required hold points with the Building Inspector when the permit is issued.
- Roofing: the Town's IFC amendment bars new building permits for shake/wood shingle roofing except repair/replacement of existing shake roofs or additions under 20% of existing floor area (§ 150.05(B)(1)).
- Sign permits and offsite/public infrastructure work are separate iWorq applications (Sign Permit Application and Infrastructure Permit Application) — budget for those as distinct submittals alongside a commercial build-out.
- Fee chase trail: § 150.98 (re-fetched 2026-08-01) defers ALL permit fees to an unpublished Town Council resolution; no valuation-based building-permit fee table, plan-review fee, or commercial-specific fee exists anywhere online after exhaustive chases on 2026-07-07, 2026-07-20, and 2026-08-01. This is a confirmed absence, not an unfinished lookup — get current figures from the Building Inspector (928-428-2290) or the iWorq application flow.
- Change of use/occupancy of an existing building falls under the 2015 IEBC as adopted and may trigger the accessibility standards incorporated by § 150.13 (A.R.S. § 41-1492.03, public accommodations/commercial facilities) for the altered areas.
Frequently asked questions
Sources & verification
Verified against official sources. Last reviewed 2026-08-01.
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 Thatcher building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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