MEP permit drawings in Arizona.

In Arizona, building codes are adopted locally. Phoenix, Tucson, Mesa, Scottsdale and the counties each choose which editions of the International Codes and the National Electrical Code to enforce, and when to update them. The City of Phoenix, for example, has moved to the 2024 International Codes, while other Valley cities may still be on earlier editions. That is why we confirm your city's adoption before drafting.

• Building & residential — IBC and IRC editions adopted locally, with city amendments
• Electrical — NEC, edition chosen by each jurisdiction
• Plumbing — mostly IPC; check your city, as some jurisdictions differ
• Mechanical & fuel gas — IMC and IFGC
• Energy — IECC, with editions and local amendments that vary widely between cities

Some Arizona jurisdictions have amended or opted out of parts of the energy code for residential construction, so the energy documentation a reviewer expects in one city may differ from the next.

• Phoenix — Planning and Development Department, now on the 2024 International Codes with Phoenix amendments
• Tucson & Pima County — City of Tucson Planning & Development Services and Pima County Development Services
• Mesa — Development Services, Building Safety
• Scottsdale — Planning & Development, Plan Review
• Chandler, Gilbert, Glendale, Tempe & Peoria — each with its own building safety division
• Maricopa County, Flagstaff, Yuma & Prescott — plus unincorporated county areas and every other Arizona city

Building in unincorporated Maricopa or Pima County? County permitting applies, with its own adopted codes and plan-review process.

• Cooling-dominated HVAC sizing — Phoenix and Tucson are in hot-dry climate zone 2B, so accurate Manual J cooling loads matter more than rules of thumb. Oversized equipment is a common comment.
• Attic and rooftop equipment — equipment, ducts and refrigerant lines in hot attics or on roofs need correct clearances, platforms and access shown on plan.
• Solar PV and battery interconnection — electrical drawings often need to show existing or planned PV, battery storage and panel capacity.
• Evaporative cooling — makeup water and drainage for evaporative coolers on plumbing and mechanical sheets.
• EV charging and pool loads — NEC load calculations for EV chargers, pools and spas, common on Valley remodels.

• Electrical — power and lighting plans, panel schedules, load calculations and single-line/riser diagrams (NEC as adopted by your city)
• Plumbing — fixture layouts, water supply sizing, DWV isometrics and gas piping (IPC or local plumbing code)
• HVAC / mechanical — duct layouts, equipment schedules, ventilation and Manual J/S/D load calculations (IMC / IRC mechanical)
• Energy compliance — IECC compliance notes as adopted locally, with Manual J/S/D load calculations
• Fire protection — sprinkler layouts, hydraulic calculations and fire alarm plans (NFPA 13/13R/13D, NFPA 72) where your project needs them

Trade-specific details: electrical, plumbing, HVAC and fire protection permit drawings.

Arizona requires engineering work to be done by a registrant of the state board, and most Arizona cities require sealed MEP drawings for commercial buildings. Many single-family remodels and additions can be permitted without an engineer's seal, depending on the city.

Engineers who seal drawings in Arizona are licensed by the Arizona State Board of Technical Registration (BTR). If your project needs sealed MEP drawings, we confirm during scoping whether an Arizona-licensed engineer can seal your discipline and scope, and we put that in writing in your quote. If we can't arrange the seal for your project, we tell you up front, so you can have your own engineer of record review and seal the set. You never pay for drawings you can't submit.

1. Free consultation — tell us about the project, the address and the permit office.
2. Send your plans — architectural floor plans in PDF or DWG (sketches work for small residential jobs).
3. Code check & fixed quote — we confirm the code editions and submittal checklist your Arizona AHJ uses, then send a fixed price and timeline.
4. Drafting & your review — residential sets usually take 5–7 business days, light commercial 7–14. You mark up, we revise.
5. Submittal & plan-review comments — you get PDF and DWG files ready to upload; if the reviewer issues comments, we revise the drawings at no extra charge until approval.