Navajo County, AZ Building Setbacks & Zoning: Lot Coverage Limits (2026)

Navajo County's Zoning Ordinance sets maximum lot coverage as a fixed percentage in its Article 5 Development Standards table for the Single-Family Residential (R1) zoning districts that cover most platted rural subdivisions outside the reservations and outside Holbrook, Winslow, Show Low, Snowflake, Taylor and Pinetop-Lakeside. Under Section 503, a parcel zoned R1-43 (43,000 square-foot minimum parcel size, 100-foot minimum width) may cover no more than 20 percent of the lot with buildings, while a parcel zoned R1-10 (10,000 square-foot minimum, 60-foot minimum width) may cover up to 30 percent.

5 feet in the front yard and 7 feet in the side or rear yard. Lot coverage is administered by the Navajo County Community Development Director as part of building permit and zoning compliance review; an applicant proposing to exceed the percentage on a given parcel must seek relief through the Board of Adjustment process under Article 21 rather than build to a variance the ordinance does not otherwise grant administratively. Because the standard is set per zoning district rather than county-wide, a lot's coverage limit always depends on which R1 district applies to that specific parcel, and the Article 6 Multi-Family (R) districts and other Article 7-9 commercial, industrial and special-development districts each carry their own separate coverage figures in their own Development Standards tables rather than this one.