A Certificate of Occupancy in Arizona is issued by your local city or county building department after your project’s permitted work passes every required inspection and the building official confirms the structure complies with the applicable building, zoning, fire, and life-safety codes. Arizona has no single statewide building code, so the exact forms, fees, and inspection sequence depend on the jurisdiction where the property sits. The core path is the same everywhere: pull permits, pass inspections, get the sign-off.
Why Your Jurisdiction Sets the Rules
Each Arizona city and county adopts its own version of the International Building Code, sometimes with local amendments.1International Code Council. Arizona – ICC Phoenix adopted the 2024 IBC effective August 2025; smaller towns may still enforce older editions. A project in Scottsdale follows Scottsdale’s process, and a project in unincorporated Maricopa County goes through the county’s Planning and Development Department. Before starting anything, contact the building department that covers your address to confirm the current code edition and the local CO application.
Permits Come First
The CO process begins long before the final inspection. Approved building permits are required before breaking ground on new construction, major renovations, or any change in a building’s use. Most projects need a general building permit plus separate permits for electrical, plumbing, and mechanical work. Plans are reviewed against the locally adopted code, and permits issue only after the design is approved.
If you skip permits or deviate significantly from approved plans, the building official can deny the CO. You may also face orders to demolish non-compliant work or bring it up to code at your own expense.
Inspections You Have to Pass
Passing a series of staged inspections is the core requirement for any CO. Inspectors verify the work at specific construction milestones, and each phase must be approved before the next one can begin. In Phoenix, the residential inspection sequence looks like this:2City of Phoenix. Residential Inspections
- Pre-concrete inspection, before any concrete is poured, covering underground plumbing and electrical, rebar placement, hold-downs, footing depth and width, and electrical grounding.
- Framing (strap and brace) inspection, after rough framing, checking member spacing and size, ties and clips, headers and lintels, and shear wall location.
- Pre-drywall inspection of rough plumbing, mechanical, and electrical, plus safety glazing, energy compliance, and the exterior weather barrier. Tile roofs should be loaded before this stage.
- Final inspection of plumbing fixtures, electrical outlets, HVAC equipment, smoke detectors, doors, windows, gas vents, and the water meter. A successful final inspection triggers utility clearance and clears the way for the CO.
Commercial projects add layers. Fire department sign-off, zoning compliance verification, and sometimes health department approval are all required before a commercial CO can issue. If any inspection discipline comes back “not approved,” the whole CO process stalls until corrections are made.3City of Phoenix. Temporary Certificate of Occupancy (TCO) – Permit Process
Failed inspections cost time and money. Phoenix charges $195 for each re-inspection, whether the failure was because the work wasn’t ready, the inspector couldn’t access the site, or earlier deficiencies weren’t corrected.4City of Phoenix. PDD Fee Schedule Don’t call for an inspection until the work is genuinely complete for that stage.
Final CO vs. Temporary CO
The final CO is the permanent document confirming the structure is 100 percent complete and fully compliant with all applicable codes. In Scottsdale, that document stays with the property in perpetuity, valid as long as the use doesn’t change and no significant alterations are made.5City of Scottsdale. Certificate of Occupancy The final administrative steps usually include submitting any outstanding documentation (contractor affidavits, special inspection reports, compliance certificates for fire alarm or sprinkler systems) and paying any remaining fees. In Phoenix, a CO issued at the conclusion of code-required construction carries no additional fee beyond what you already paid with your building permit.4City of Phoenix. PDD Fee Schedule
When a building is substantially complete and all life-safety systems are functional but minor items remain unfinished, the building official can issue a Temporary Certificate of Occupancy (TCO). Phoenix’s TCO rules, based on IBC Section 111.3, require the building to be fully enclosed, all fire and life-safety systems operational on the occupied floor plus one level above and below, accessibility features complete, and parking (including accessible spaces) available.3City of Phoenix. Temporary Certificate of Occupancy (TCO) – Permit Process
TCO terms differ significantly by city:
- Phoenix charges $780 for a TCO, valid up to 180 days but never past the expiration date of the original building permit. Phoenix does not allow TCO renewals or extensions.4City of Phoenix. PDD Fee Schedule
- Scottsdale requires a refundable cash deposit or irrevocable letter of credit equal to the total of all permit fees or $2,500, whichever is greater. The deposit is returned within 30 days of the final CO, minus a $200 processing fee.5City of Scottsdale. Certificate of Occupancy
- Tucson charges $695.50 for a 30-day TCO, renewable at $267.50 per 30-day period.6City of Tucson. Tucson Unified Development Code 4-02.10.0 – Certificate of Occupancy and Other
- Smaller jurisdictions like Page issue TCOs at the building inspector’s discretion for 30, 60, or 90 days.7American Legal Publishing. Page Code of Ordinances 154.077 – Certificate of Occupancy and Temporary Certificate of Occupancy
A TCO is a bridge, not an endpoint. If you let one expire without obtaining the final certificate, the building official can revoke your right to occupy the space.
When a Change of Use Requires a New CO
You don’t only need a CO for new construction. Any change in how a building is used can trigger the requirement, even without construction. Under the International Existing Building Code adopted in Phoenix, a new CO is required whenever a building shifts from one occupancy classification to another, such as converting a warehouse into a restaurant or an office into a retail store.8UpCodes. Chapter 10 Change of Occupancy – Phoenix Existing Building Code
In Mesa, even if a new tenant makes no physical changes, a change in occupancy classification still requires a tenant improvement permit and a new CO.9City of Mesa. Commercial Construction Frequently Asked Questions Tucson takes a different approach: if the new tenant uses the space the same way the previous tenant did, the existing CO remains valid and no new certificate is needed. Tucson issues COs to the space, not the business name.10City of Tucson. Occupancy Certificates
Phoenix charges a minimum of $390 for the plan review and another $390 for the field inspection when processing a change-of-use CO without construction, both billed at $195 per hour with a two-hour minimum.4City of Phoenix. PDD Fee Schedule The review verifies that the new use doesn’t demand higher fire protection, structural capacity, ventilation, or accessibility standards than what’s already in place. If it does, the building needs upgrades before the CO can issue.
Retroactive CO for Older Buildings
If you’re trying to get a CO for a building constructed years ago that never received one, Phoenix has a specific retroactive process. Start by completing a Certificate of Occupancy Eligibility Questionnaire, which the Planning and Development Department reviews to determine whether the building qualifies. The review fee is $150, and you’ll hear back within 10 working days.11City of Phoenix. Certificate of Occupancy Customer Packet
Documentation requirements are specific. You’ll need proof of the year the building was constructed, typically a Detailed Valuation Report from the Maricopa County Assessor’s Office, plus proof of continuous use at the address. Phoenix accepts historical business directory listings, Arizona Corporation Commission records, or copies of previous liquor licenses for that.11City of Phoenix. Certificate of Occupancy Customer Packet Qualifying buildings then submit floor layout drawings at architectural scale, a site layout drawing, and project information including occupancy classification, square footage, and sprinkler and fire alarm details. Tucson’s retroactive CO carries a base fee of $70.62 plus hourly staff review as needed.6City of Tucson. Tucson Unified Development Code 4-02.10.0 – Certificate of Occupancy and Other
Fees at a Glance
CO-related costs vary by jurisdiction and certificate type. A snapshot:
- Phoenix final CO for new construction: no additional fee beyond the building permit.4City of Phoenix. PDD Fee Schedule
- Phoenix TCO: $780 per request.4City of Phoenix. PDD Fee Schedule
- Tucson TCO: $695.50, renewals at $267.50.6City of Tucson. Tucson Unified Development Code 4-02.10.0 – Certificate of Occupancy and Other
- Phoenix re-inspection: $195 per occurrence.4City of Phoenix. PDD Fee Schedule
- Phoenix after-hours inspection: starts at $390 (two-hour minimum) for requests near regular hours, and $585 (three-hour minimum) for evenings, weekends, and holidays.4City of Phoenix. PDD Fee Schedule
These figures don’t include the building permit itself, plan review charges, or any impact fees your jurisdiction may assess. Check your local fee schedule directly, since smaller cities and county jurisdictions often charge less than Phoenix or Scottsdale.
What Happens If You Occupy Without One
Moving into a building without a valid CO is illegal in every Arizona jurisdiction that requires one. Tempe is explicit: buildings or structures cannot be used or occupied until the building inspector approves the final inspection and clears the building for occupancy.12City of Tempe. Certificate of Occupancy Violations can result in code enforcement action, daily fines, and orders to vacate.
For business owners, the fallout goes past fines. Operating without a CO can invalidate your business license, void your insurance coverage, and expose you to personal liability if someone is injured on the premises. Lenders may refuse to finance or refinance a property that lacks a valid certificate, and resale value drops when the building can’t be legally occupied.
Buying or Leasing Property
Whether you’re purchasing a building or signing a commercial lease, the CO is your proof that the space can legally be used for what you intend. Banks routinely require a valid CO before approving financing, and title companies may flag a missing certificate during closing.
For commercial tenants, Tucson’s approach is a useful reference point: the CO attaches to the space and its approved use, not to the business name. If you’re moving into a space previously used for the same purpose, the existing CO typically transfers without any action on your part.10City of Tucson. Occupancy Certificates Change the use, and you’ll need a new certificate before you can legally operate. Mesa offers a middle ground: if there’s a permit record for the space, you can apply for a duplicate CO in your name for the same use without going through a full inspection.9City of Mesa. Commercial Construction Frequently Asked Questions
Homebuyers should ask whether the property has a CO before making an offer, especially on older homes, flipped properties, or any structure with obvious additions or conversions. Unpermitted work without a corresponding CO can become your problem after closing, potentially requiring you to bring the entire structure into compliance at your own cost.