Coconino County requires building permits for masonry and block walls that carry structural and snow-region wind loads. Short wood or wire fences are often exempt. Call Arizona 811 before digging; cities permit separately.
Because Coconino County exercises zoning and building authority over unincorporated land, block and masonry walls generally need a building permit for footings, reinforcement, and freeze-resistant design, and taller freestanding walls require engineered plans. Simple wood, split-rail, or wire fences below the code threshold are frequently exempt—handy on the county's many rural and forested parcels. A boundary survey settles the true line before posts go in, and Arizona Blue Stake (811) must be called so buried utilities are located first. Inside Flagstaff, Sedona, Page, and Williams, each city's building department issues its own fence permits. HOA architectural approval, where it exists, is a separate contract-based step.
Building a masonry wall without the required Coconino County permit can bring a stop-work order and retroactive permitting with penalties. Cutting a buried utility after skipping Blue Stake creates liability.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Coconino County, AZ
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See how Coconino County's permit requirements rules stack up against other locations.
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