Building Permits in Yuma County, Arizona
Adopted Construction Codes
These are the state-level code editions for Arizona. They apply in Yuma Countyunless a verified local adoption or amendment is noted — in local-adoption states, confirm the city or county's own code editions with the building department.
Permit Requirements
Statewide baseline under the codes as adopted by Arizona. Local amendments and fee schedules for Yuma County are being verified — use the building department contacts to confirm before you build.
Exemptions: Arizona has no statewide residential building code: building codes are adopted and enforced at the city/county level — A.R.S. 11-861(A) provides that a county board of supervisors may adopt and enforce a building code and other related codes for zoned unincorporated areas (and may exempt rural/unclassified areas entirely), and municipalities adopt codes by reference under A.R.S. 9-802. Most Arizona cities and counties adopt an edition of the IRC, so IRC R105.2 exemptions typically apply, but the governing edition, amendments, and permit rules are set by each jurisdiction. Always confirm with the local building department.
Exemptions: Set by each city/county — Arizona has no statewide building code (A.R.S. 11-861; A.R.S. 9-802). Where the IRC is adopted unamended, R105.2 exempts only decks not exceeding 200 square feet, not more than 30 inches above grade at any point, not attached to a dwelling, and not serving the required exit door; other decks require a permit. Confirm the adopted edition and local amendments with the local jurisdiction.
Exemptions: Set by each city/county — Arizona has no statewide building code, and A.R.S. 11-861(C) limits county-adopted codes to nationally recognized building, electrical, plumbing, or mechanical codes (most jurisdictions use the NEC via the IRC or a stand-alone adoption). Where the IRC is adopted unamended, R105.2 exempts only minor electrical repairs (such as replacing lamps or connecting approved portable equipment to existing receptacles) and similar listed items; new wiring, circuits, and service changes typically require a permit. Verify with the local building department.
Exemptions: Set by each city/county — Arizona has no statewide building code (A.R.S. 11-861 for counties; A.R.S. 9-802 for municipalities). Where the IRC is adopted unamended, R105.2 exempts fences not over 7 feet (2,134 mm) high from a building permit, but Arizona jurisdictions commonly amend fence rules and impose separate pool-barrier and zoning height requirements. Verify with the local jurisdiction.
Exemptions: Set by each city/county — Arizona has no statewide building code (A.R.S. 11-861; A.R.S. 9-802). In jurisdictions adopting the IRC, reroofing is not among the R105.2 exempt items, so a permit is typically required for roof replacement, though some Arizona jurisdictions exempt like-for-like reroofs by local amendment. Verify with the local building department.
Exemptions: Set by each city/county — Arizona has no statewide building code (A.R.S. 11-861; A.R.S. 9-802). Where the IRC is adopted unamended, R105.2 exempts retaining walls not over 4 feet (1,219 mm) in height measured from the bottom of the footing to the top of the wall, unless supporting a surcharge; taller walls or walls with surcharge require a permit. Local amendments are common, so confirm with the local building department.
Exemptions: Set by each city/county — Arizona has no statewide building code (counties may adopt codes under A.R.S. 11-861; municipalities under A.R.S. 9-802). In jurisdictions adopting the IRC unamended, R105.2 exempts one-story detached accessory structures with a floor area not exceeding 200 square feet, though some jurisdictions amend this threshold (commonly 120-200 sq ft). Confirm the adopted code and any local amendments with the local building department.
Exemptions: Set by each city/county — Arizona has no statewide building code (A.R.S. 11-861; A.R.S. 9-802). In jurisdictions adopting the IRC/UPC, water heater replacement is not among the standard permit exemptions (IRC R105.2 plumbing exemptions cover only leak repairs and clearing stoppages without replacing pipes, valves, or fixtures), so a plumbing/mechanical permit is typically required. Confirm requirements with the local jurisdiction.
Building Department
Phone: 928-817-5000
Get a plain-English answer grounded in this page’s verified data — e.g. “Do I need a permit for a 180 sq ft shed in Yuma County?”
Ask the Copilot →Get a printable permit report for any address — jurisdiction, adopted codes, exemption rules, and who to call, on one page.
Get an Address Report →