Mesa building permit requirements
City of Mesa Development Services Department — Permit Services
Verified 2026-06-29 · Source
Department information
- Address
- 55 N. Center St., Mesa, AZ 85201
- Phone
- 480-644-4273
- Office hours
- Monday–Thursday 7:00 AM – 6:00 PM; Friday (Essential Services Call Center only) 8:00 AM – 12:00 PM
- Website
- Official site
Codes adopted
Arizona has no statewide building code for non-state buildings; codes are adopted locally. According to the International Code Council, codes are adopted locally in Arizona and are predominantly the I-codes, with different cities and counties choosing their own editions and local amendments. The Arizona State Fire Code (adopting the 2018 IFC) applies only to state and county buildings, public and private schools, and non-residential occupancies in areas without a locally adopted fire code — it does not establish a statewide residential or commercial building code floor. Each city and county adopts its own code editions independently, resulting in different I-Code years and amendment sets across jurisdictions. There is no state-mandated minimum edition; enforcement is entirely local. Always confirm the adopted edition and any local amendments with the specific jurisdiction before submitting plans.
Permit types
Residential Building Permit (New Home / Custom Residence)
Required for new single-family homes, duplexes, and townhouses in Mesa. All permit applications, plan review, documents, and approvals are submitted electronically through the DIMES system. Mesa reviews residential plans within 10 working days (Monday–Thursday, holidays excluded). Expedited review (5 working days) is available for double the regular permit fee. Projects already submitted or under construction before January 8, 2026 are reviewed under the 2018 codes; new submissions are reviewed under the 2024 I-Codes.
Commercial / Multifamily Building Permit
Required in Mesa for new commercial buildings, tenant improvements, alterations, changes of occupancy, multi-family residential developments, and new accessory structures over 200 sq ft. Submit electronically through the DIMES portal. Mesa reviews commercial plans within 18 working days (Monday–Thursday, holidays excluded). Expedited review (10 working days) and Super-Expedited review (5 working days) are available for an additional premium. A Self-Certification Program allows a registered professional to certify code compliance, expediting permit issuance to within 5 days.
Electrical Permit (Stand-Alone)
Stand-alone electrical permits are required in Mesa for separate electrical work not part of a building permit — including new electric panels or subpanels, new system connections, and relocated electrical systems. Work must comply with the 2023 National Electrical Code (NEC) as adopted with Mesa local amendments (Mesa City Code Title 4). Mesa publishes a 2023 NEC (Electrical) Checklist for plan review guidance. Note: replacing an air conditioning unit with one using the same or less electrical load and same connections does NOT require a permit; replacing or modifying electrical connections DOES require a permit.
Plumbing Permit (Stand-Alone)
Stand-alone plumbing permits are required in Mesa for separate plumbing work not included in a building permit. Work must comply with the 2024 International Plumbing Code (IPC) with Mesa local amendments (Mesa City Code Title 4). Mesa publishes a 2024 IPC (Plumbing) Checklist for plan review guidance. Water heater replacements: replacing a gas or electric water heater with a like-for-like model of equal or lesser rating does NOT require a permit; replacing a traditional storage gas water heater with a tankless or on-demand gas water heater DOES require a permit. Gas utility notification is required before placing gas appliances into service.
Mechanical / HVAC Permit (Stand-Alone)
Stand-alone mechanical/HVAC permits are required in Mesa for separate mechanical or fuel-gas work not included in a building permit. Work must comply with the 2024 International Mechanical Code (IMC) and 2024 International Fuel Gas Code (IFGC) with Mesa local amendments (Mesa City Code Title 4). Mesa publishes 2024 IMC (Mechanical) and 2024 IFGC (Fuel/Gas) checklists. Note: replacing an A/C unit with one using the same or less electrical load and same connections does NOT require a permit.
Solar Photovoltaic (PV) System — Permit Exemption / Electrical Permit
In Mesa, residential solar photovoltaic (PV) systems that are under 10,000 square feet, certified by a nationally recognized testing agency, and installed by an Arizona licensed contractor do NOT require a construction permit. However, new electric meters or circuits required by the solar installation WILL require a stand-alone electrical permit. If the home is historic, Planning Division approval (Certificate of Appropriateness) is required. For height, location, and historic home requirements, contact the Planning Division. For construction permit and building code requirements, contact Permit Services.
Residential Pool / Spa Permit
A construction permit is required in Mesa for constructing or filling in an inground swimming pool or spa, and for above-ground spa installations (a flat fee applies for above-ground spas). Plans must comply with the 2024 International Swimming Pool and Spa Code (ISPSC) with Mesa local amendments, the 2024 IRC, and the 2023 NEC including Mesa amendments. Mesa requires a 60-inch minimum pool barrier from time of excavation until permanent barrier completion. Pool equipment shall not be located within a public utility easement (PUE). The water's edge shall be at least 4 feet from property lines per Mesa Zoning Ordinance § 11-30-11.
Accessory Dwelling Unit (ADU) / Casita Permit
Mesa requires a construction permit for attached additions and detached dwellings (casitas/ADUs). Mesa has adopted a Preapproved Housing Design Plan Program per ARS § 9-461.19 — Class 4 covers ADUs in sizes of 200, 600, or 1,000 sq ft. There is no fee for submitting preapproved housing design plans for review; standard construction permit fees apply at permit issuance. Preapproved plans from Mesa's Standard Plan Library may be used with permission from the plan owner (Preapproved Housing Design Plan Agreement required). Additional plans (plot plan, site plan, grading plan, off-site improvement plans) may be required regardless of whether a preapproved plan is used.
Fence / Wall Permit
In Mesa, fences and walls require a construction permit if they exceed 6 feet in height (rear and side yards) or exceed 3 feet in the front and side yards. Retaining walls over 4 feet tall (measured from bottom of footing to top) or any retaining wall supporting surcharge or liquids require a permit. Fences and walls requiring a permit also require zoning clearance from the Planning Division. Fences on top of retaining walls always require a permit. Fences under 6 feet in the rear do not require a permit. No fence may be within 3 feet of a fire hydrant or utility.
Demolition Permit
A construction permit is required in Mesa for demolition of any structure. Condemnation demolitions are not charged a fee. Demolition permits use the Residential Rate Table or Commercial Rate Table based on valuation. Submit through the DIMES portal.
Sign Permit
Sign permits are required in Mesa for permanent and certain temporary signage. Sign permits are reviewed within 10 business days. Expedited review (5 business days) is available for 100% of the sign permit fee. Sign permits are charged in addition to applicable building and civil engineering permits. Mesa publishes a Sign Checklist for permanent signs, a '10 Steps to Get Your Sign Permit Approved in One Review' guide, and separate guides for temporary signage (banners/balloons, A-frame/T-frame signs).
Tips & gotchas
- ALL Mesa permit applications, plan review, documents, and approvals are electronic — use the DIMES portal (mesaaz.gov). There is no paper submittal option.
- Mesa's working days are Monday–Thursday only (Friday is limited to Essential Services Call Center). Review timelines exclude Mesa holidays.
- 2024 I-Codes took effect January 8, 2026 for new permit applications. Projects submitted or under construction before that date are NOT affected. The Homeowner's Guide (dated March 2025) still references 2018 codes — refer to the Building Code page for current code status.
- Mesa does NOT require a construction permit for residential solar PV systems under 10,000 sq ft that are listed/labeled by a nationally recognized testing agency and installed by an AZ licensed contractor. New meters/circuits still require a stand-alone electrical permit.
- Mesa has stricter-than-standard pool barrier requirements: 60-inch minimum barrier height (vs. 48-inch default ISPSC) and 60-inch construction fencing required from excavation through permanent barrier completion.
- Mesa charges a flat all-inclusive fee for pool permits ($330 for in-ground pool/spa; $300 for above-ground spa) — not a valuation-based fee.
- Mesa has a Preapproved Housing Design Plan Program for single-family homes (800–2,000 sq ft), duplexes, triplexes, and ADUs (200/600/1,000 sq ft) with no review fee for preapproved plans; standard permit fees apply at issuance.
- A 4% Technology Improvement Fee (capped at $800) is added to every permit fee in Mesa.
- Permits expire if no work and no inspections have occurred within 180 days of issuance — fees apply to reactivate.
- If your property is in a flood zone, Maricopa County Flood Control District approval is required BEFORE applying for any Mesa construction permit.
- For soil disturbance over 1/10 acre, Maricopa County Dust Control approval is required before Mesa permit issuance (commercial projects).
- Re-inspections cost $120 per trip in Mesa. After-hours inspections (after 5 PM weekdays and weekends) require advance scheduling and additional fees ($120/hour, 2-hour minimum).
Sources & verification
Verified against official sources. Last reviewed 2026-06-29.
- City of Mesa Development Services Department — Permit Services — official building department
- Building Permit & Plan Review | City of Mesa Development Services
- Development Codes, Ordinances, Regulations & Standards | City of Mesa
- Mesa Building Code (2024 I-Codes effective Jan 8, 2026) | City of Mesa
- Mesa Administrative Code Amendments | Title 4 Building Regulations (Municode)
- Development Services Schedule of Fees and Charges (Dec 2025) — PDF
- Residential Construction | City of Mesa
- Commercial Construction | City of Mesa
- Construction Inspections | City of Mesa
- Residential Construction FAQ | City of Mesa
- Construction Forms, Guides & Checklists | City of Mesa
- Preapproved Housing Design Plan Program | City of Mesa
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 Mesa building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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