Building permits in unincorporated Coconino County are issued by the Community Development Department under the county building ordinance, from 2500 North Fort Valley Road, Building 1, Flagstaff, AZ 86001 (928-679-8850, Monday to Friday, 8am to 5pm). This is the second largest county in the contiguous United States by land area, and it has written rules for adobe, rammed earth, potable rainwater and other alternative construction.
This guide covers what requires a permit in unincorporated Coconino County, the six-year code adoption cycle, the earthen building and potable rainwater ordinances that exist almost nowhere else, the pilot programme that can exempt an owner-builder using alternative methods, the published review timelines, and the land carve-outs that decide jurisdiction.
This guide covers unincorporated Coconino County outside state, federal and tribal land. Flagstaff, Sedona, Williams, Page, Fredonia and Tusayan are separate.
The county’s ordinance states the land carve-out plainly. The codes apply to the unincorporated area of Coconino County excluding state and federal lands, including but not limited to Indian Reservations, unless an intergovernmental agreement exists for building code enforcement. In a county with vast federal and tribal holdings, establishing the land status of the parcel is the threshold question rather than a detail.
What requires a permit in Coconino County?
The Coconino County Community Development Department administers the county building ordinance and the building codes adopted under it, with the building official as administrator, from 2500 North Fort Valley Road, Building 1, Flagstaff, AZ 86001 (928-679-8850, Monday to Friday, 8am to 5pm). Coconino is the second largest county in the contiguous United States by land area, and its jurisdictional map is correspondingly complicated.
The land carve-out is stated plainly in the ordinance. The county’s adopting ordinance provides that the codes apply to the unincorporated area of Coconino County excluding State and Federal Lands, including but not limited to Indian Reservations, unless an intergovernmental agreement exists for building code enforcement. So tribal land and state and federal land sit outside county building jurisdiction by default — but the ordinance expressly contemplates that an agreement can bring code enforcement in. Establish the parcel’s land status before assuming any authority applies.
The county adopts on a published rhythm rather than ad hoc. Every six years Community Development, working with the Building Safety Advisory Board, leads the process of adopting new and updated building codes — to address emerging safety risks, improve energy efficiency, incorporate new materials and technology, and maintain a high insurance services rating. The latest round took effect on 2 June 2026: the 2024 International Residential, Building, Mechanical, Fuel Gas, Plumbing, Existing Building and Swimming Pool and Spa Codes and the 2023 National Electrical Code, with the 2018 energy code kept and county amendments for wildfire resistance and energy conservation. Complete applications with plans drawn to the previous 2018 codes are accepted until 31 December 2026.
Two adopted instruments here have almost no equivalent elsewhere. The county has a dedicated Earthen Building and Construction Ordinance regulating the quality and type of material, testing and workmanship for all aspects of construction of earthen buildings or structures — adobe, rammed earth and similar. And it has adopted a Potable Rainwater Collection and Distribution Systems Code as an amendment to the residential code. Both reflect how people actually build on high desert land without utilities.
Permit required
- New residential and commercial construction, additions and alterations
- Structural work, relocation and demolition in the unincorporated county
- Earthen building and construction, under the county's dedicated ordinance
- Potable rainwater collection and distribution systems
- Grading, subject to the county's published grading policies
- Septic and on-site wastewater systems
- Solar photovoltaic systems and battery storage
- Construction in wildland urban interface areas within participating fire districts
Typically exempt
- Work on state, federal or tribal land, which sits outside county jurisdiction
- Purely cosmetic finish work that alters no regulated system
- Re-roofing with the same material where no structural work is involved
- Work qualifying under the county's self-issue grading policies
Coconino County building department: who handles permitting
The department publishes its actual review timelines and updates them, which is rare and useful. Recent published figures put building and engineering permits on a six to eight week review timeline and environmental quality permits on four to six weeks, with the county noting it was training additional staff and recruiting. It is equally candid about what does not help: it states that it cannot expedite reviews, and that refraining from requesting status updates lets staff process permits faster.
Short on time to read all of this?
Get a free quote →The county’s Alternative Methods and Materials Permit Program, formerly the Innovative Materials and Systems Pilot Program, allows rural owner-builders of small innovative dwellings the option of seeking an exemption from some aspects of the adopted building codes when building with alternative methods and materials, under certain circumstances. That is a genuine route out of the prescriptive code for a strawbale, earthbag or comparable build — not a waiver of everything, and no certificate of occupancy is issued, which can affect insurance and lending. Anyone planning an alternative build in northern Arizona should start here.
Appeals and code interpretation go to the Building Safety Advisory Board, constituted under the county building code statutes to determine the suitability of alternative materials and construction, permit interpretations of the code, and hear appeals and grant waivers. Its membership is drawn from named professional categories including a licensed architect and a professional engineer. Note also that the county has adopted two grading policies with self-issue permit types available in the online portal under the engineering permit list.
| Detail | Information |
|---|---|
| Authority | Community Development Department, unincorporated Coconino County, 2500 North Fort Valley Road, Building 1, Flagstaff, AZ 86001 (928-679-8850, Monday to Friday, 8am to 5pm) |
| Jurisdiction excludes | State and federal land, and tribal land, absent an agreement |
| Code cycle | 2024 codes with the 2023 NEC (2018 energy code kept) from 2 June 2026; 2018-code plans accepted to 31 December 2026 |
| Advisory board | Building Safety Advisory Board, with named professional categories |
| Published review times | Building and engineering six to eight weeks; environmental four to six |
| Expedited review | The county states it cannot expedite reviews |
| Special ordinances | Earthen building and construction; potable rainwater collection |
| Alternative construction | Alternative Methods and Materials Permit Program (formerly the Innovative Materials and Systems Pilot Program) for owner-builders |
| Grading | Two adopted policies with self-issue permit types in the portal |
| Fire code | The International Fire Code is not adopted; specified articles are |
Coconino County has a published route to a building code exemption for alternative construction. The Alternative Methods and Materials Permit Program, formerly the Innovative Materials and Systems Pilot Program, allows rural owner-builders of small dwellings the option of seeking an exemption from some aspects of the adopted codes when building with alternative methods and materials under certain circumstances. Combined with the county’s dedicated earthen building ordinance and its potable rainwater code, this gives a genuinely alternative build a written path — and the requirements are written down rather than left to negotiation.
Coconino County's jurisdiction stops at more boundaries than most. Flagstaff, Sedona, Williams, Page, Fredonia and Tusayan permit their own work. State and federal lands are excluded from the county codes by the adopting ordinance, and this county contains vast federal holdings. Tribal land — including substantial reservation area — is likewise excluded unless an intergovernmental agreement for building code enforcement exists. Establish the land status of the parcel first; it is the threshold question here, not a detail.
Coconino County permits: record types and what each covers
The record catalog here is unusually varied because the county has adopted instruments for ways of building that most Arizona jurisdictions do not address at all.
Not sure this scope needs a permit?
Get a free quote →Residential permit types
| Permit type | What triggers it | Review path | Fee basis |
|---|---|---|---|
| New construction | New dwellings, additions, and accessory structures above the local size threshold | Plan review against the jurisdiction's adopted residential code and local amendments, plus zoning and setbacks | Valuation-based |
| Addition | Added conditioned or unconditioned space attached to an existing dwelling | Structural and energy review where the jurisdiction has adopted an energy code; most Arizona homes are in hot, dry climate zones, so envelope and equipment sizing draw attention | Valuation-based |
| Renovation / alteration | Structural changes, layout changes, or added plumbing, mechanical, or electrical | Plan review scaled to scope; a change that alters egress, structure, or a system is reviewed even where the footprint does not move | Valuation-based |
| Reroof | Roof covering replacement, recover, and structural deck repair | Deck and dry-in inspection; plan review rarely required, but a change of assembly type can trigger a structural check | Valuation or squares |
| Solar photovoltaic | Rooftop or ground-mount arrays, with or without battery storage | Single local review covering both the structural attachment and the electrical scope; there is no separate state electrical record in Arizona | Flat or system-size based |
| Battery energy storage | Wall or floor-mounted storage added to a dwelling | Electrical review plus fire separation, ventilation, and location check | Flat or per-permit minimum |
| Electrical | Service changes, panel upgrades, new circuits, EV chargers, meter sets, and rewiring | Local trade review and local inspection against the National Electrical Code edition the jurisdiction has adopted | Per-permit or per-device |
| Plumbing | New piping, repipes, fixtures, gas piping, and water heater replacement | Local trade review; performed by a contractor holding the matching Registrar of Contractors specialty classification | Per-permit minimum or per-fixture |
| Mechanical / HVAC | Changeouts, new ductwork, and refrigeration | Local trade review; changeout volume is heavy in Arizona given summer design temperatures | Per-permit minimum or per-unit |
| Patio cover and shade structure | Attached and detached covers, ramadas, and carports | Structural review for wind uplift and attachment, plus zoning for setbacks and lot coverage | Valuation or flat |
| Swimming pool | In-ground and above-ground pools and spas | Barrier, bonding, and electrical review; the local pool barrier rules apply, and Arizona’s state barrier law covers places with no local barrier ordinance | Valuation or flat |
| Manufactured home set-up | Placing or re-siting a manufactured or modular home | Installation permit and inspection through the Arizona Department of Housing’s Office of Manufactured Housing, or the local agency acting for it, with local zoning, setback, floodplain and utility connection review | Flat or per-unit |
| Demolition | Full or partial demolition of a dwelling or accessory structure | Utility disconnect confirmation, dust control where earthmoving is involved, and site restoration check | Flat |
| Earthen building permit | Adobe, rammed earth and comparable construction | Material quality, testing and workmanship under the dedicated ordinance | Per the Board-approved fee schedule |
| Innovative materials exemption | Owner-builders using alternative methods and materials | A defined route to a code exemption under certain circumstances | Per the county's published pilot programme terms |
Rather talk it over?
Call 1-855-478-4290 →Commercial permit types
| Permit type | What triggers it | Review path | Fee basis |
|---|---|---|---|
| New commercial construction | Ground-up commercial, industrial, and institutional buildings | Concurrent review against the jurisdiction's adopted building code and amendments, plus fire and zoning | Valuation-based |
| Tenant improvement / upfit | Interior fit-out of an existing tenant space | Building, trade, and life-safety review; accessibility attaches on change of use | Valuation-based |
| Change of occupancy | Converting a building or space to a different use group | Occupancy classification, egress, and accessibility review | Valuation or flat |
| Commercial electrical | Service, distribution, and branch circuit work | Local trade review and local inspection; Arizona has no central state electrical permit for either residential or commercial work | Per-permit or valuation |
| Commercial plumbing | Process piping, fixtures, backflow, and grease waste | Local trade review; backflow and grease interceptor sign-off where applicable | Per-fixture or valuation |
| Commercial mechanical | Rooftop units, kitchen exhaust and hood systems, and refrigeration | Local trade review; hood and suppression systems draw fire review alongside mechanical | Per-unit or valuation |
| Commercial reroof | Roof covering replacement on a commercial structure | Deck, dry-in, and attachment inspection | Valuation or squares |
| Signage | Wall, ground, and illuminated signs | Zoning review for size and placement, plus electrical where illuminated | Flat or per-sign |
| Grading and drainage | Clearing, grading, and site work that alters drainage | Civil review of grading and drainage, separate from the building permit; monsoon-season flows drive the design | Acreage or valuation |
| Dust control permit | Earthmoving, trenching, and construction dust on a qualifying site | County air quality department, not the building department; required under the county’s dust (PM-10) rules, which are strictest in the Phoenix-area PM-10 nonattainment area | County air quality fee schedule |
| Commercial demolition | Full or partial demolition of a commercial structure | Utility disconnect, asbestos notification, dust control, and site restoration | Flat or valuation |
| Self-issue grading permit | Individual residential lots meeting the county's grading policy conditions | Issued directly in the portal under the engineering permit list | Per the Board-approved fee schedule |
| Wildland interface compliance | Projects in fire districts that have adopted interface codes | Fire suppression systems required in addition to interface compliance | Assessed through the relevant fire district |
Residential
- Building and trade permits are issued and inspected by the same local authority
- There is no separate state electrical permit — electrical is a local record
- Work that needs a permit must be done by a Registrar of Contractors licensee, at any job value, unless the owner is doing it under the owner-builder exemption
- A new or changed septic system needs approval from ADEQ, or the county agency acting for it, before it is installed
Commercial — multi-discipline
- Concurrent review across building, trades, fire, and zoning
- Signed and sealed plans from Arizona-registered design professionals, apart from the small buildings and alterations state law exempts
- The licensee's classification must match the actual scope of work
- Accessibility and life-safety review attach to any change of occupancy
Records you will actually see in Coconino
| Record | What it covers |
|---|---|
| Building permit | Construction in the unincorporated county, outside excluded lands |
| Earthen building permit | Adobe, rammed earth and similar, under the dedicated ordinance |
| Potable rainwater system | Collection and distribution, under the adopted code amendment |
| Innovative materials exemption | Owner-builders using alternative methods, under the pilot programme |
| Self-issue grading permit | Qualifying residential lots under the county's grading policies |
| Engineering permit | Site and civil works, on the published review timeline |
| Environmental quality permit | On-site wastewater and related environmental records |
| Wildland interface compliance | In participating fire districts, with suppression requirements |
| Appeal or waiver | To the Building Safety Advisory Board |
Rather not deal with the Coconino County building department?
Get a free quote →Solar permits in Coconino
Solar in unincorporated Coconino County is permitted and inspected by the county under the 2023 National Electrical Code from 2 June 2026, though complete applications drawn to the previous codes (with the 2017 electrical code) are accepted until 31 December 2026. The loading is what differs here: an array adds dead load to a roof already designed for snow at Colorado Plateau elevations, and drifting behind array rows and sliding loads at the eave are genuine structural questions. On an off-grid parcel, note that the county has also adopted a potable rainwater collection code, so the water system may be a regulated system in its own right.
Roofing permits in Coconino
Reroofing follows the ordinary sequence, and at these elevations it is designed against snow load, ice damming and freeze-thaw cycling rather than the heat and ultraviolet exposure that govern the Valley. Where the parcel sits in a fire district that has adopted wildland urban interface codes, the covering and venting details are subject to wildfire requirements and fire suppression systems are required in addition. Winter also constrains when the work and its inspections can realistically happen, so build seasonal contingency in.
Arizona solar and roofing work is permitted and inspected locally, against the code edition each jurisdiction has adopted; utilities run interconnection on their own timeline. Arizona rules
Coconino County permit cost
The county underwent a fee study and publishes its Board-approved fee schedule alongside construction valuation and associated building fee information; newly adopted building permit fees take effect on 1 January 2027. That pairing — the fee schedule plus the valuation basis — lets a project be priced from public documents.
The costs specific to this county are design costs rather than permit fees. Building at elevation on the Colorado Plateau brings snow loading and, in wildland urban interface areas within participating fire districts, wildfire construction requirements and fire suppression systems. An alternative or earthen build brings testing and workmanship requirements under the relevant ordinance. Budget those at concept, not at permit.
| Fee component | How it works |
|---|---|
| Building permit fee | Under the Board-approved fee schedule from the county fee study |
| Construction valuation | Published alongside the fee schedule as the assessment basis |
| Plan review | Assessed alongside the building permit |
| Engineering permits | Assessed separately; some grading types are self-issue |
| Environmental quality permits | Assessed separately, on a shorter published review timeline |
| Earthen construction | Testing and workmanship requirements under the dedicated ordinance |
| Wildland interface | Fire suppression and assembly requirements in participating districts |
Want a precise number for a specific Coconino project? Send us the scope and we will price the permit path before you file.
Coconino County trade permits
The trades are permitted and inspected by the county under its adopted codes and amendments, in the unincorporated area outside the excluded lands. Arizona has no state electrical permit.
Electrical permits
Required for service work, panel changes, photovoltaic systems, electric vehicle chargers and most wiring alterations. The county adopted the 2023 National Electrical Code from 2 June 2026; plans drawn to the 2017 edition are accepted with complete applications until 31 December 2026.
Plumbing permits
Required for new piping, repipes, fixtures and water heaters. This is the county with a potable rainwater collection and distribution code adopted as a residential code amendment, so on an off-grid parcel the water supply itself may be a permitted, regulated system rather than an assumption.
Mechanical permits
Required for heating, ventilation and air-conditioning work, ductwork and refrigeration. At Coconino elevations heating load dominates, which inverts the design priorities that apply in the low desert and changes equipment selection accordingly.
Earthen and alternative construction
Not a trade permit, but a distinct regulated category here. The earthen building ordinance regulates material quality and type, testing and workmanship across all aspects of construction of earthen buildings, and the innovative materials pilot offers owner-builders a route to a code exemption for alternative methods under defined circumstances.
Want this handled start to finish?
Get a free quote →Arizona licenses contractors through the state Registrar of Contractors, and the small-job exemption never covers work that needs a permit. Arizona rules
Coconino County permit application: how to apply step by step
Here is how to get a building permit in Coconino County, from confirming the requirement through to close-out. Each step below corresponds to a real decision point where projects commonly stall.
The county codes exclude state and federal lands and tribal land unless an intergovernmental agreement for building code enforcement exists. In a county with vast federal and tribal holdings this is the threshold question, not a detail.
The county adopts on a six-year rhythm with the Building Safety Advisory Board. The 2024 codes took effect on 2 June 2026, and complete applications with plans drawn to the 2018 codes are accepted until 31 December 2026.
Not all properties for sale are legal to build on, permits are not issued on parcels too small for their zoning district, property lines need a registered land surveyor, and unmapped channels still carry floodplains.
If you are building with earthen materials, harvesting rainwater for potable use, or using alternative methods as an owner-builder, the county has adopted instruments for all three. Engage them early.
Building and engineering permits have been running six to eight weeks and environmental quality permits four to six. The county states it cannot expedite reviews, so build the timeline in rather than hoping to compress it.
Applications run through the county's public portal, with some grading types available as self-issue permits under the engineering list. Work the inspection sequence through to the occupancy certificate.
Inspections in Coconino County
Inspections follow the ordinary sequence, with the county publishing a plan attachment sheet carrying information about building inspections for building permits. The department also publishes the days on which it is closed and inspections will not be performed, which on a seasonal programme at elevation is worth diarising.
The department is unusually direct about how to work with it well. It asks that technical and code questions go to the relevant division's plans reviewer rather than the general queue, allows a few business days for a response, and states that refraining from requesting status updates lets staff process permits faster. It also says plainly that it cannot expedite reviews. Taken together that is a request to plan properly rather than chase.
Winter is a genuine constraint on the Colorado Plateau. Site access, concrete placement and roofing are all seasonal here in a way they are not in the low desert, and the department's published closure days compound it. Build weather contingency into the inspection sequence at the programme stage rather than absorbing it later.
Close-out follows the ordinary sequence to the occupancy certificate. Where the project involved earthen construction, an alternative materials exemption, a rainwater potable system or wildland interface requirements, expect those elements to be verified as built against the relevant ordinance rather than the general code alone.
Coconino County permit search and official resources
These are the primary Coconino County and Arizona sources behind this guide. The county moved to the 2024 codes in June 2026, so confirm the editions for your submittal date.
Inspections are where schedules slip.
Get a free quote →- Coconino County Community Development
- Coconino County building codes, ordinances and design criteria
- Coconino County rural property guidance
- Coconino County public portal
- Arizona Registrar of Contractors
- Arizona Department of Environmental Quality
- Arizona Department of Water Resources
Frequently asked questions
Does Coconino County permit work on tribal land?
Not by default. The county's adopting ordinance provides that the codes apply to the unincorporated area excluding state and federal lands, including but not limited to Indian Reservations, unless an intergovernmental agreement exists for building code enforcement. Tribal land is a sovereign jurisdiction; establish the parcel's land status before assuming any authority applies.
Which codes does the county enforce?
The 2024 International Residential, Building, Mechanical, Fuel Gas, Plumbing, Existing Building and Swimming Pool and Spa Codes and the 2023 National Electrical Code, with county amendments and the 2018 energy code, effective 2 June 2026. The county adopts on a six-year cycle with the Building Safety Advisory Board, and it accepts complete applications drawn to the previous 2018 codes until 31 December 2026.
Can I build with adobe or rammed earth?
Yes, and the county has a dedicated ordinance for it. The Earthen Building and Construction Ordinance regulates the quality and type of material, testing and workmanship across all aspects of construction of earthen buildings or structures. Very few Arizona jurisdictions address this at all.
Can I get an exemption from the building codes?
Under defined circumstances, yes. The county’s Alternative Methods and Materials Permit Program, formerly the Innovative Materials and Systems Pilot Program, allows rural owner-builders of small dwellings the option of seeking an exemption from some aspects of the adopted codes when building with alternative methods and materials. The dwelling must be owner-occupied, no certificate of occupancy is issued, and other county, state and federal requirements still apply, so engage it early and on its own terms.
Can I use collected rainwater as my potable supply?
The county has adopted a Potable Rainwater Collection and Distribution Systems Code as an amendment to the residential code, so such systems are a regulated and recognised category here rather than an unregulated workaround. On an off-grid parcel that makes the water supply a permitted system in its own right.
How long does review take?
The county publishes and updates its figures. Recent published timelines put building and engineering permits at six to eight weeks and environmental quality permits at four to six weeks. The county states that it cannot expedite reviews, and that refraining from status-update requests helps staff process permits faster.
Is every parcel buildable?
No. The county's rural guidance states that building permits are required in all unincorporated areas but not all properties for sale are legal for building, and permits will not be issued on properties too small for the zoning district in which they sit. Verify before you buy.
Is the International Fire Code adopted?
Not in full. The county's ordinance states that the International Fire Code is not adopted, while specified articles are. Separately, some fire districts within the county have adopted wildland urban interface codes with fire suppression requirements, so the position depends on where the parcel sits.
How do I verify my property lines?
With a registered land surveyor. The county's guidance is explicit that the only way to verify the location of property lines is to have a registered land surveyor survey and mark the corners, and that before applying for a building permit it is the owner's responsibility to identify property lines accurately.
Are there self-issue permits?
Yes, for some grading. The county has adopted two grading policies applying to individual residential lots meeting certain conditions, with self-issue permit types available in the online portal under the engineering permit list.
Do the state accessory dwelling unit rules apply here?
Yes, since 2026. A 2025 law (A.R.S. 11-810.01) requires every Arizona county to allow at least one attached and one detached accessory dwelling unit as a permitted use on any lot where a single-family dwelling is allowed, with county regulations due by 1 January 2026. It does not apply on tribal land or near military and some public airports. The detail is in the county Zoning Ordinance, so check it before you design.
How serious is a violation?
A person, firm or corporation violating the provisions of the adopted codes is guilty of a class two misdemeanour, with each day of continuance treated as a separate matter under the ordinance. Appeals and waivers go to the Building Safety Advisory Board.
Simplify Coconino County permitting with Alliance Permitting
Coconino County has written rules for earthen construction, potable rainwater and an alternative materials exemption route, a six-year code cycle that reached the 2024 codes in June 2026, and a jurisdictional map complicated by federal and tribal land. Alliance Permitting prepares, files and tracks Coconino County permits through issuance.
Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Coconino because the work is done by people who have stood at the counter:
- We settle the land status first, because federal and tribal land sits outside the county codes.
- We confirm which point in the six-year code cycle governs your submittal date.
- We engage the earthen, rainwater and alternative materials instruments early where they apply.
- We plan to the county's published review times rather than asking for an expedite it cannot give.
Alliance Permitting is a permit documentation and expediting service in Arizona. We are not a law firm and do not provide legal advice, and we are not the permitting authority.
Ready to break ground in Coconino sooner?
Let Alliance prepare, file, and track your Coconino permits while your crew stays on the job.
More Arizona permitting guides
This guide is provided by Alliance Permitting for general information about Coconino County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.