Mohave County enforces adopted building codes on unincorporated land, so a retaining wall above the code threshold—generally four feet—needs a permit and engineering. Desert flash-flood drainage must be handled or you face civil liability.
Because Mohave County operates building authority over its unincorporated area, a residential retaining wall above the code trigger—generally four feet measured 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 desert's real danger: monsoon flash floods move fast across the county's alluvial fans, so a wall must be designed to pass water rather than dam it. Inside Kingman, Lake Havasu City, and Bullhead City, each city's building code applies. Regardless of permit, a wall that pushes stormwater onto a neighbor's lot creates civil liability.
An unpermitted regulated wall on unincorporated land draws a Mohave County correction order and possible engineering review. A wall that channels monsoon runoff onto adjoining property invites a civil damage claim.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Lake Havasu City, AZ
Inoperable vehicles stored in front yards or visible from the right-of-way are a public nuisance under § 8.08.020 and may be towed after notice. Junk vehicle...
Lake Havasu City, AZ
Chapter 10.12 governs street parking. Section 10.12.040 lists prohibited stopping/standing/parking locations including within 15 ft of fire hydrants, 30 ft o...
Lake Havasu City, AZ
Section 14.04.02 requires RV/boat trailer parking spaces on residential property to be at least 10 ft × 36 ft (360 sq ft). Occupying an RV or travel trailer ...
Lake Havasu City, AZ
Chapter 6.16 (Cruelty, Neglect, and Dangerous Animals) regulates vicious and dangerous animals without breed-specific restrictions. Owners of dogs declared d...
Lake Havasu City, AZ
Section 6.20.020 requires horses, mules, cattle, burros, goats, sheep, swine, and poultry to be kept in a pen or similar enclosure to prevent roaming at larg...
Lake Havasu City, AZ
Ordinance 24-1328 (effective March 2024) allows residents of single-family detached homes on lots of one-half acre or less to keep up to 6 fowl as an accesso...
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