Skip to main content
PermitBase

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

Check off what you have — your progress is saved on this device.

Not ready yet0 of 3 required documents checked.

This checker covers one permit. A full project usually triggers several — our paid checklist will assemble all of them, from $29

Fee schedule

Building Permit Fee (valuation-based, ICC February 2017 Building Valuation Data methodology)City of Flagstaff Resolution 2017-21, effective August 1, 2017, applying the February 2017 ICC Building Valuation Data table; plan review fee is an additional 65% of the calculated building permit fee. Verified directly against the raw Resolution 2017-21 + ICC BVD PDF text (not a summarized rendering).
Gross Area (sq ft) x Square Foot Construction Cost (by occupancy/construction type, e.g., B/Business = $182.98 (Type IA) down to $123.97 (Type VB) per sq ft) x 0.01 permit fee multiplier
Plan Review Fee (deposit)City of Flagstaff Resolution 2017-21; per the Application for Commercial Building/Grading Permit, the estimated plan review fee is due at time of submittal and is non-refundable, with the remaining permit fee balance due upon permit issuance
65% of the total calculated Building Permit Fee

Review timeline

Plan reviewFlagstaff’s published plan-review target
15–65 business days

How long did your Commercial Building Permit (New Construction / Addition / Alteration) permit actually take in Flagstaff?

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

Inspection process

  1. 1

    Foundation/Footing

    Before concrete pour — verify forms, rebar, and foundation per approved structural plans

  2. 2

    Framing

    Structural framing, connections, and fire-rated assemblies per approved plans and the 2018 IBC

  3. 3

    Mechanical/Electrical/Plumbing Rough-In

    Rough-in inspections for mechanical, electrical, and plumbing systems before concealment

  4. 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

Flagstaff requires a commercial building permit (new construction / addition / alteration) for: 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. If your project isn't listed, confirm with City of Flagstaff Building Safety Section (Planning & Development Services, Community Development Division) at 928-213-2000 before starting work.

Fees use the February 2017 ICC Building Valuation Data methodology: Gross Area x Square Foot Construction Cost (by occupancy/construction type) x a 0.01 permit fee multiplier, with the plan review fee set at 65% of the calculated building permit fee, per City Council Resolution 2017-21 (effective August 1, 2017). The plan review fee is due as a non-refundable deposit at submittal.

For new commercial construction or a 'Commercial Building /Civil Plan Review' project: 15 working days Administrative Completeness Review + 50 working days Substantive Review, for an overall timeframe of 65 working days. A separate, faster track applies to Commercial Tenant Improvement Plans (35 working days overall) — see the commercial-tenant-improvement-permit entry. Source: City of Flagstaff Commercial Plan Review (PDF).

You'll need: Application for Commercial Building/Grading Permit (PDF); Commercial Construction Drawings and Plan Review Checklist; Plumbing, Mechanical, and Electrical Plans. Depending on your project, Flagstaff may also ask for: Owner Authorization Form (PDF). See the required-documents checklist on this page for details on each.

Flagstaff requires 4 inspection(s) for a commercial building permit (new construction / addition / alteration), in order: Foundation/Footing, Framing, Mechanical/Electrical/Plumbing Rough-In, Final. Schedule each through City of Flagstaff Building Safety Section (Planning & Development Services, Community Development Division) (928-213-2000).

Apply through City of Flagstaff Building Safety Section (Planning & Development Services, Community Development Division) at 211 W Aspen Avenue, Flagstaff, AZ 86001. Phone: 928-213-2000, email: BuildingPermits@flagstaffaz.gov. Office hours: City Hall is open 8:00 am to 4:30 pm. Commercial permit attachments too large for the portal: Commercial.BuildingPermits@flagstaffaz.gov. Inter-departmental submittals: FrontCounter@flagstaffaz.gov.. Official information: https://www.flagstaff.az.gov/494/Building-Safety.

Flagstaff, Arizona has adopted: Arizona has no mandatory statewide building code edition — cities and counties each adopt and amend their own codes (per Arizona Revised Statutes framework for municipal building regulation; no state building-code-adoption agency parallel to Montana's DLI exists). The City of Flagstaff independently administers its own Building Safety program within city limits, separate from Coconino County's building department, which handles unincorporated county areas. Source: City of Flagstaff Building Safety page (flagstaff.az.gov/494/Building-Safety) and Building Permits page.; 2018 International Building Code (IBC) — adopted by City of Flagstaff Resolution 2019-26 and Ordinance 2019-16 on June 18, 2019, effective July 19, 2019 (the '2018 Suite of Codes'). Source: City of Flagstaff 2019 Adopted Building Codes (PDF); 2018 International Residential Code (IRC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; 2018 International Existing Building Code (IEBC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; 2018 International Mechanical Code (IMC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; 2018 International Plumbing Code (IPC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019 (Arizona/Flagstaff uses the IPC, not the Uniform Plumbing Code); 2018 International Fuel Gas Code (IFGC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; 2018 International Energy Conservation Code (IECC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; 2018 International Swimming Pool and Spa Code (ISPSC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; 2018 International Solar Energy Provisions (ISEP) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; a compilation of solar energy provisions from the IBC, IRC, IECC, IMC, IPC, IFC, and ISPSC; 2017 NFPA 70 / National Electrical Code (NEC) — adopted per Resolution 2019-26 / Ordinance 2019-16, effective July 19, 2019; ICC A117.1-2017, Accessible and Usable Buildings and Facilities — adopted per Resolution 2019-26 / Ordinance 2019-16; 1997 Uniform Housing Code, 1997 Uniform Administrative Code, and 1997 Uniform Code for the Abatement of Dangerous Buildings (ICBO) — retained as adopted codes per Flagstaff City Code Title 4, Chapter 4-01; All codes amended locally by Flagstaff City Code Title 4, Building Regulations (Chapters 4-01 through 4-11), on file with the City Clerk. Source: Flagstaff City Code Title 4 Building Regulations amendments document (2019 Amendments to the Adopted Codes, PDF, rev. 05/14/2019); Statewide overlay: Arizona Revised Statutes Section 9-468 sets mandatory statewide standards for solar photovoltaic and solar water heating construction permits (limits on required plan documentation, prohibits requiring a PE stamp absent a written justification, and caps solar permit fees at actual cost of issuance) — binding on the City of Flagstaff as a municipality. Source: azleg.gov ARS 9-468; Arizona Revised Statutes Sections 9-835 and 9-836 set statutory residential building-permit plan-review timeframes (Administrative Completeness Review and Substantive Review stages) that the City of Flagstaff's published review timeframes implement. Source: City of Flagstaff Residential Building Permits Plan Review Process and Timeframes (PDF). Local amendments apply — see the Flagstaff overview page for the full list.

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.

This one’s complicated · Get an expediter

Tell us about your project and we’ll connect you with a permit expediter who works in Flagstaff.

PermitBase may receive a referral fee from the expediter. This is a service introduction, not verified permit data or legal advice.