Mechanical / HVAC Permit (Stand-Alone) in Mesa, Arizona
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.
Verified 2026-06-29 · Source
When you need this permit
- Mechanical/HVAC work must comply with the 2024 IMC and 2024 IFGC with Mesa local amendments (Mesa City Code Title 4)
- Stand-alone mechanical permits (not part of a building permit) use the Residential Rate Table or Commercial Rate Table based on valuation
- No permit required: A/C unit replacement where the new unit uses the same or less electrical load and same connections as the existing unit
- Permit required: changing the electrical connections during A/C replacement; new mechanical systems; modifications to existing mechanical systems
- Apply through the DIMES online permit system
Required documents
- Opt
2024 IMC (Mechanical) Checklist
Mesa Development Services review checklist for mechanical plan submissions; available on the Construction Forms, Guides & Checklists page
- Opt
2024 IFGC (Fuel / Gas) Checklist
Mesa Development Services review checklist for fuel gas plan submissions; available on the Construction Forms, Guides & Checklists page
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Stand-alone mechanical permit — Residential Rate Table | $0–$8,333: $220; $8,334–$16,667: $330; $16,668–$24,999: $440; $25,000–$200,000: $500 plus $6/each $1,000 over $25,000 | Mesa Development Services Schedule of Fees and Charges (Dec 2025). Stand-alone permits use the Residential Rate Table for residential work. Valuation determined by applicant and verified by Plans Examiner. |
Review timeline
10–10 business days
Mesa’s published plan-review target
Inspection process
- 1
Mechanical inspection per stage
Inspections at each stage of mechanical work prior to cover. Schedule via DIMES, text to 480-644-2428, or phone.
Tips
- A/C unit replacement with a unit using the same or less electrical load and same connections does NOT require a permit in Mesa. Changing the electrical connections DOES.
- Mesa adopted the 2024 IMC and 2024 IFGC with local amendments — verify work against the 2024 editions.
- Mesa publishes 2024 IMC (Mechanical) and 2024 IFGC (Fuel/Gas) checklists — available on the Construction Forms, Guides & Checklists page.
Frequently asked questions
- Do I need a permit to replace my A/C unit in Mesa?
- No permit is required if the new air conditioning unit uses the same or less electrical load and the same connections as the existing unit. If you are changing the electrical connections, a construction permit is required. Source: City of Mesa Residential Construction FAQ.
Sources & verification
Verified against official sources. Last reviewed 2026-06-29.
- City of Mesa Development Services Department — Permit Services — official building department
- Residential Construction FAQ (A/C replacement) | City of Mesa
- 2024 IMC (Mechanical) Checklist — PDF | City of Mesa
- 2024 IFGC (Fuel / Gas) Checklist — PDF | City of Mesa
- Development Services Schedule of Fees and Charges (Dec 2025) — PDF
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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