Lake Havasu City ADU Zoning Rules & Permit Guide

ADU Regulations in Lake Havasu City, Arizona

Updated September 29, 2026

Along the Colorado River in Mohave County, Lake Havasu City allows ADUs in residential zones under local code. The seasonal rental market makes accessory units attractive for property owners.

Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Lake Havasu City as of 2026. Regulations are governed by local zoning ordinances, as Arizona has no statewide ADU mandate.

Additional Local Requirements for Lake Havasu City

• ADU allowed in residential zones per local ordinance
• Minimum 200 sq ft
• Building permit required
• ⚠️ AZ has NO statewide ADU law — city code governs

Frequently Asked Questions About ADUs in Lake Havasu City

Can I build an ADU in Lake Havasu City?

This Arizona city permits ADUs under local ordinance. Confirm your zone's eligibility with the planning department first.

What is the maximum ADU size allowed in Lake Havasu City?

ADUs in Lake Havasu City can be up to 1,000 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Lake Havasu City planning department before designing your project.

What are the setback requirements for an ADU in Lake Havasu City?

ADUs in Lake Havasu City generally require setbacks of 5 ft rear, 5 ft side. Arizona has no statewide ADU mandate — the exact setback figures come from Lake Havasu City's own zoning code, so confirm them with the city planning department before you design.