Commercial Building Permit (New Construction / Addition / Alteration) — Flagstaff, Arizona · Requirements sheet
Verified 2026-07-29 · Source: https://www.flagstaff.az.gov/5140/Building-Permits
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 / Addition / Alteration) in Flagstaff, Arizona
Required for new construction, additions, and structural alterations to commercial buildings in Flagstaff, reviewed against the 2018 Suite of Codes (IBC, IEBC, IMC, IPC, IFGC, NEC) as adopted by the City of Flagstaff (Resolution 2019-26 / Ordinance 2019-16). This entry covers the building shell/structure track — 'Commercial Building /Civil Plan Review' — which the City's own Commercial Plan Review document distinguishes from a separate, faster 'Commercial Tenant Improvement Plans' review track for interior build-outs of existing tenant space (see the commercial-tenant-improvement-permit entry). Fire sprinkler/alarm system work is a further separate Fire Prevention Permit administered directly by the Flagstaff Fire Department (see fire-sprinkler-alarm-permit), in addition to this Building Permit.
Verified 2026-07-29 · Source
When you need this permit
- Building Permit required for new commercial construction, additions, and structural alterations, reviewed under the 2018 Suite of Codes as adopted by City of Flagstaff Resolution 2019-26 / Ordinance 2019-16
- Application for Commercial Building/Grading Permit must be filled out completely, and construction drawings must include a Standard Code Summary Block on the cover sheet (occupancy type, type of construction, occupant loads, fire sprinklers, square footage figures)
- Construction plans must be sealed by an Arizona registrant per A.R.S. 32-143 if the project is over 3,000 sq ft, has 20 or more occupants, or has structural members greater than 20 feet
- If the project is located in a City of Flagstaff Historic District, approval from the Historic Preservation Committee/Commission must be obtained before submitting building plans
- The Grading Questionnaire on the application (cut/fill inside the building footprint excluded) must be completed; a 'Yes' answer to triggers such as fill greater than 50 cubic yards, engineered fill supporting a structure, or an unsupported cut slope over 5 feet requires the combined Building/Grading Permit process
- Restaurants, medical marijuana facilities, pools, and similar uses require separate approval documentation from the Coconino County Health Department submitted with the plan set
- Fire sprinkler and fire alarm system work requires a separate Fire Prevention Permit submitted directly to the Flagstaff Fire Department — administratively distinct from, and in addition to, this Building Permit
- A Building Permit application is deemed abandoned 180 days after filing unless pursued in good faith or a permit issued (IBC 105.3.2); the Building Official may grant one or more 180-day extensions in writing for justifiable cause
- Commercial Building Permits are valid for a maximum of 730 days, with one 365-day extension available on written request with justifiable cause; a second extension requires paying one-half the original building permit fee (excluding plan review fee); permits not passing final inspection within 1,095 days expire outright
- Apply through the Citizen Access Portal, or submit directly to the Building Safety & Code Compliance Section (211 W Aspen Avenue); large commercial attachments may be emailed to Commercial.BuildingPermits@flagstaffaz.gov
Required documents
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Fee schedule
Review timeline
Inspection process
- 1
Foundation/Footing
Before concrete pour — verify forms, rebar, and foundation per approved structural plans
- 2
Framing
Structural framing, connections, and fire-rated assemblies per approved plans and the 2018 IBC
- 3
Mechanical/Electrical/Plumbing Rough-In
Rough-in inspections for mechanical, electrical, and plumbing systems before concealment
- 4
Final
All systems complete per approved plans; precedes Certificate of Occupancy issuance
See the full Flagstaff inspection guide — scheduling & re-inspection fees →
Tips
- Flagstaff's Commercial Plan Review document draws a hard line between 'Commercial Building /Civil Plan Review' (this entry: 15 working days Administrative Completeness Review + 50 working days Substantive Review = 65 working days overall) and 'Commercial Tenant Improvement Plans' (a separate, faster track: 35 working days overall) — confirm which checklist applies to your project before submitting, since they have different submittal requirements.
- The plan review fee is a non-refundable deposit due at submittal; the remaining permit fee balance is due only upon permit issuance, per the Application for Commercial Building/Grading Permit.
- Fire sprinkler and fire alarm system work needs its own Fire Prevention Permit directly from the Flagstaff Fire Department — it is not covered by this Building Permit's fee or review track.
- reviewTimelineDays reflects the City's published 'Commercial Building /Civil Plan Review' track: 15 working days Administrative Completeness Review + 50 working days Substantive Review = 65 working days overall, with only one written request for additional information permitted during substantive review. Source: City of Flagstaff Commercial Plan Review (PDF), verified against the raw extracted PDF text.
Frequently asked questions
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 Flagstaff building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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