Accessory Structures in Navajo County, AZ (2026)

2 rules for unincorporated Navajo County, Arizona.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Navajo County. If you live within an incorporated city, that city's own rules apply: see the city list below.

ADU Rules

Unincorporated Navajo County allows one attached and one detached guest house on a lot under an acre, or one attached and two detached on a lot an acre or larger, sited at least five feet from any rear or side line, under Zoning Ordinance Section 1917.

Navajo County Guest House / ADU Rules

Some Restrictions

Navajo County Zoning Ordinance § 1917.1

Section 1917 – Guest Houses/Accessory Dwelling Units 1. Performance Standards. Approval of Guest Houses shall require compliance with the following performance standards: a. A maximum of: i. One attached and one detached guest house are permitted on any lot under one (1) acre in size ... ii. ... One attached and two detached guest houses are permitted on any lot that is one (1) acre or more in ...

Full ordinance details →Official source ↗

Shed & Carport Rules

In unincorporated Navajo County, Arizona (outside tribal land and the six incorporated towns), a shed or other accessory building can sit inside the required side or rear yard, but it must stay at least five feet from any side or rear lot line and ten feet from any street under Zoning Ordinance Section 1904.

Navajo County Shed and Accessory Setbacks

Some Restrictions

Navajo County Zoning Ordinance § 1904

Section 1904 – Accessory Buildings Accessory buildings may be built in the required rear or side setback but shall not be closer than five feet (5’) from any side or rear lot line. Accessory buildings shall not be closer than ten feet (10’) from any street.

Full ordinance details →Official source ↗

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