Coconino County enforces adopted building codes on unincorporated land, so a retaining wall above the code threshold—generally four feet—needs a permit and engineering. Snowmelt and monsoon drainage must be handled or you face civil liability.
Because Coconino County operates building authority over its unincorporated area, a residential retaining wall above the code trigger—generally four feet from footing to top, or any wall holding a surcharge such as a driveway, slope, or structure above it—requires a permit and engineered plans. Drainage is the real hazard in the high country: spring snowmelt and summer monsoon storms move water fast down forested slopes and canyon lots, and freeze-thaw cycles work on footings, so a wall must be designed to pass water rather than dam it. Inside Flagstaff, Sedona, Page, and Williams, each city's building code applies. A wall that pushes runoff onto a neighbor's lot creates civil liability.
An unpermitted regulated wall on unincorporated land draws a Coconino County correction order and possible engineering review. A wall that channels snowmelt or monsoon runoff onto adjoining property invites a civil damage claim.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Page, AZ
The City of Page regulates noise through its Code of Ordinances (American Legal Publishing at https://codelibrary.amlegal.com/codes/page/latest/overview). Di...
Coconino County, AZ
Coconino County may require hosts to carry liability insurance for short-term rental properties. Minimum coverage amounts vary by jurisdiction.
Coconino County, AZ
Coconino County limits the number of guests allowed in short-term rental properties. Occupancy caps are typically based on bedroom count or square footage to...
Coconino County, AZ
Neither Arizona nor Coconino County regulates holiday decorations. No permit is needed for lights, inflatables, or yard displays on your own property. The re...
Coconino County, AZ
Temporary garage- and yard-sale signs are allowed on private property during the sale, but only for a short window and only with the owner's permission. Sign...
Coconino County, AZ
Arizona strongly protects political signs. A.R.S. §16-1019 lets you place them in the public right-of-way from 71 days before an election through 15 days aft...
See how Page's retaining walls rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.