Building permits in Maricopa County — the most populous county in Arizona and 4th most populous in the nation, encompassing the Phoenix metro area — are issued by Planning & Development Department, Building Permits Division. Maricopa County enforces the 2021 IBC/IRC with Maricopa County amendments.
This guide covers what requires a permit, the Permit Center, fees, trade permits, and inspections — so your Maricopa County project stays on track.
Largest county in Arizona with over 4.5 million residents. Maricopa County Planning & Development handles permitting for unincorporated areas only. Properties within city/town limits (Phoenix, Mesa, Scottsdale, etc.) are permitted by the respective municipality. Permit Center launched in June 2024 as a consolidated online platform. All contractors must hold an active Arizona ROC license.
Jurisdiction note. Maricopa County permits cover unincorporated areas only. If your project is within an incorporated city or town, contact that municipality's building department.
What requires a building permit in Maricopa County?
Under the 2021 IBC/IRC with Maricopa County amendments, a permit is required for most construction activities:
Permit required
- New residential and commercial construction, additions
- Structural and load-bearing alterations
- Reroofing, windows, siding, and exterior changes
- Electrical service changes and most wiring work
- HVAC installations and changeouts
- Plumbing alterations, repipes, and water heaters
- Decks, pools, fences, patio covers, carports
- Change of occupancy or use
Typically exempt
- Painting, wallpapering, tiling, carpeting, cabinet installation
- Countertop replacement and similar finish work
- Retaining walls ≤ 4 ft (not supporting surcharge)
- Replacement of existing same-type fixtures
Exemptions are narrow and scope-specific. When unsure, confirm with the building department before starting — see the penalty note below.
Get the permit issued before starting work. Building without one exposes the owner to penalties and stop-work orders. Note that exemption from a building permit does not exempt a project from zoning requirements — confirm edge cases with the building department.
Who handles permitting in Maricopa County?
The Building Permits Division within Planning & Development Department handles plan review, permit issuance, and construction inspections. All permits are managed through the Permit Center.
| Detail | Information |
|---|---|
| Office | Planning & Development Department — 301 W Jefferson St, Suite 170, Phoenix, AZ 85003 |
| Phone | (602) 506-3301 |
| Online portal | Permit Center |
| Code cycle | 2021 IBC/IRC with Maricopa County amendments |
| Review timeline | 10–15 business days residential; 15–25 commercial |
| Contractor license | Arizona ROC license required |
Apply at the Permit Center. Register an account on the Permit Center. Start a new application, upload required documents (site plan, construction drawings, energy code compliance), and pay the plan review fee at submittal. Print and post the permit card on-site before work begins.
Maricopa County building permit cost
Maricopa County permit fees are Valuation-based per county fee schedule. Plan review fee is 65% of building permit fee.
| Fee component | How it works |
|---|---|
| Residential building permit | Valuation-based formula |
| Commercial building permit | Valuation-based formula |
| Plan review fee | 65% of building permit fee |
| Trade permits (E / P / M) | Separate fees per trade |
| Technology / admin fee | Added to permit total |
| Work-without-permit | Double fees + stop-work orders |
Want a precise number for a specific Maricopa County project? Send us the scope and valuation and we'll return a fee estimate alongside a filing timeline.
Maricopa County trade permits
Electrical, plumbing, and mechanical work each needs its own permit and an Arizona ROC-licensed contractor in the appropriate specialty classification.
Electrical permits
Required for service installations, panel upgrades, solar PV, EV chargers, and most wiring alterations — performed by an ROC-licensed electrical contractor (C-11/R-11 classification).
Plumbing permits
Required for new plumbing, repipes, water heater changeouts, fixtures, backflow, and sewer connections — performed by an ROC-licensed plumbing contractor (C-37/R-37 classification).
Mechanical (HVAC) permits
Required for HVAC installations, changeouts, ductwork changes, and venting modifications — performed by an ROC-licensed mechanical contractor (C-39/R-39 classification).
Miscellaneous & specialty
Fencing, pools, decks, sheds, and patio covers may require special permits depending on size and utility hookups. Demolition, sign, and right-of-way permits follow separate tracks.
Verify your contractor's ROC license. Arizona licenses contractors through the Registrar of Contractors (ROC) — a contractor's license is required for any work totaling $1,000+ (labor and materials) or any work that requires a building permit, regardless of cost. Arizona uses a classification system with 60+ license types across Residential (R-), Commercial (C-), and Dual (KB/CR) categories. Property owners may act as their own general contractor on an owner-occupied residence under A.R.S. § 32-1121(B), subject to restrictions. Verify contractor licensure at roc.az.gov.
How to get a building permit in Maricopa County
Confirm permit requirement & zoning
Contact Planning & Development Department at (602) 506-3301. Confirm zoning compliance and whether your project requires a permit.
Register on Permit Center & apply
Create an account on the Permit Center. Start a new application and select the correct permit type.
Upload documents & pay plan review fee
Upload site plan, construction drawings, energy compliance forms, ROC license, and proof of insurance. Pay plan review fee at submittal.
Plan review & corrections
Staff reviews against 2021 IBC/IRC with Maricopa County amendments. 10–15 business days residential; 15–25 commercial. Resubmit revised plans if needed.
Pay remaining fees & receive permit
Pay the remaining permit fee upon approval. Print permit and post on-site before construction begins.
Schedule inspections through CO
Schedule inspections via the Permit Center. Typical checkpoints: foundation, framing, rough-in MEP, insulation, final. Certificate of Occupancy required before occupancy.
Inspections in Maricopa County
Schedule inspections through the Permit Center. Standard checkpoints include foundation, framing, rough-in MEP, insulation, and final. Post the permit card on-site and maintain approved plans. A final inspection and Certificate of Occupancy are required before legal occupancy.
Address correction notices before requesting a re-inspection; a final inspection and Certificate of Occupancy are required before legal occupancy or use.
Official Maricopa County permitting resources
- 🏛️ Maricopa County — Planning & Development
- 💻 Permit Center (online portal)
- 📋 Construction Permit Information
- 🪪 AZ Registrar of Contractors (ROC)
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Alliance Permitting is a permit documentation and submission company: we prepare your paperwork, file it correctly, and coordinate with the building department through issuance — including preparing private-provider documentation where that option is available. We are not a contractor and do not perform licensed plan review or inspections; that work stays with your team and the jurisdiction.
Need a Maricopa County building permit?
Get your Maricopa County project permitted right. Alliance Permitting handles your applications through the Permit Center — so you build, not wait.
More Arizona permitting guides
This guide is provided by Alliance Permitting for general informational purposes and reflects publicly available information believed accurate as of June 2026. Permit requirements, fees, and processes change; always confirm current details with the Planning & Development Department before filing. This is not legal advice.