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Sign Permit — Unincorporated Navajo County, Arizona · Requirements sheet
Reviewed 2026-07-20 · Source: https://www.navajocountyaz.gov/DocumentCenter/View/2431/Construction-Permit-Application
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Sign Permit in Unincorporated Navajo County, Arizona
Required for erecting or affixing signs in unincorporated Navajo County, reviewed by the County Engineering Department alongside Planning & Development Services.
Reviewed 2026-07-20 · Source
When you need this permit
- Construction Permit Application required, completed by owner or agent
- Two (2) scaled drawings of the sign's plans and specifications, including dimensions, materials, copy, and size, as deemed necessary by the County Engineering Department
- For wall signs: dimensions of the building wall the sign will be affixed to, and location/size of existing wall signs, must also be included
- Outdoor advertising signs additionally require a registered-surveyor-prepared survey showing: all outdoor advertising signs within 1,000 ft on the same side of the street and 500 ft on the opposite side; structures within 20 ft; residential districts and institutional signs within 500 ft; and applicable zoning setbacks
- Detailed site plan required showing the sign location, setbacks, utilities, septic, driveways, and existing buildings
- Proof of ownership (Assessor's Parcel Number) required
Required documents
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Fee schedule
Sign Permit (via standard Construction Permit Application / Plan Review process)The Navajo County Fee Schedule (updated 7/15/2025) does not list a dedicated per-square-foot or flat sign-permit fee line (unlike, e.g., the City of Show Low's Sign Permit fee table). Sign permits appear to be processed via the standard Construction Permit Application and are therefore presumed subject to the general Plan Review fee structure (35% of building permit fee) absent a published sign-specific fee — this presumption is flagged, not fabricated as a confirmed number.
Not separately itemized on the 7/15/2025 fee schedule as a distinct flat sign fee
Review timeline
Plan review
Not published — contact the department
Inspection process
- 1
Final Inspection
Installed sign verified against the approved scaled drawings, dimensions, and setbacks
See the full Unincorporated Navajo County inspection guide — scheduling & re-inspection fees →
Tips
- Outdoor advertising signs (billboards) carry substantially heavier submittal requirements than on-premise wall/monument signs — a registered land surveyor's survey of nearby signs, structures, and residential/institutional uses within 500-1,000 feet is required.
- Confirm with the County Engineering Department (via Planning & Development Services, 928-532-6040) exactly which fee line on the general fee schedule applies to your specific sign project, since no dedicated per-square-foot sign fee table was found published, unlike some incorporated cities in the county.
Frequently asked questions
Unincorporated Navajo County requires a sign permit for: Construction Permit Application required, completed by owner or agent; Two (2) scaled drawings of the sign's plans and specifications, including dimensions, materials, copy, and size, as deemed necessary by the County Engineering Department; For wall signs: dimensions of the building wall the sign will be affixed to, and location/size of existing wall signs, must also be included; Outdoor advertising signs additionally require a registered-surveyor-prepared survey showing: all outdoor advertising signs within 1,000 ft on the same side of the street and 500 ft on the opposite side; structures within 20 ft; residential districts and institutional signs within 500 ft; and applicable zoning setbacks; Detailed site plan required showing the sign location, setbacks, utilities, septic, driveways, and existing buildings; Proof of ownership (Assessor's Parcel Number) required. If your project isn't listed, confirm with Navajo County Planning & Development Services — Building & Safety Division at 928-532-6040 before starting work.
In Unincorporated Navajo County, the published Sign Permit (via standard Construction Permit Application / Plan Review process) is: Not separately itemized on the 7/15/2025 fee schedule as a distinct flat sign fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.
Unincorporated Navajo County does not publish a plan-review timeline for this permit. Contact Navajo County Planning & Development Services — Building & Safety Division at 928-532-6040 for current turnaround.
You'll need: Construction Permit Application; Scaled Sign Drawings (2 copies); Detailed Site Plan. See the required-documents checklist on this page for details on each.
Unincorporated Navajo County requires 1 inspection(s) for a sign permit, in order: Final Inspection. Schedule each through Navajo County Planning & Development Services — Building & Safety Division (928-532-6040).
Apply through Navajo County Planning & Development Services — Building & Safety Division at 1100 E. Thornton Rd., Show Low, AZ 85901 (Show Low/White Mountains area office); additional area offices at 100 W. Public Works Dr., Holbrook, AZ 86025 (928-524-4100) and 2188 W. Country Club Dr., Overgaard, AZ 85933 (928-535-7110). Phone: 928-532-6040. Office hours: Monday–Thursday, 6:30 a.m. – 5:00 p.m. (Planning & Development Services main office and Show Low Building Division, per the department's Planning & Development Services page). The Permit Application Instructions document (revised January 2, 2025) lists slightly different hours for the Show Low office: Monday–Thursday, 7:30 a.m. – 6:00 p.m. Both figures are current published County sources; the department observes a 4-day (Mon–Thu) work week at all locations.. Official information: https://www.navajocountyaz.gov/289/Building-Information.
Unincorporated Navajo County, Arizona has adopted: Arizona has NO statewide mandatory building code floor for general construction — code adoption is a per-city/county authority under state enabling statutes (A.R.S. Title 11). Navajo County independently adopts and administers its own construction codes for unincorporated areas through Planning & Development Services / Building & Safety; it does NOT extend onto Navajo Nation, Hopi Tribe, or other tribal trust land, which has its own separate tribal permitting authority outside county jurisdiction. Source: Navajo County Addenda & Additions to the International Building Codes (amended 3-15-22).; 2018 International Residential Code (IRC) and 2018 International Building Code (IBC), adopted by Navajo County, EXCEPT: IRC Chapter 11 (Energy Efficiency); IRC Appendix E (Manufactured Housing Used as Dwellings); IRC § E3902; and IRC Appendices A, D, I, J, K, M, O, Q, R, S are all excluded from adoption. Source: Navajo County Addenda & Additions to the International Building Codes (amended 3-15-22), p.5 'Adopted Codes'.; 2018 International Plumbing Code — inspections are based on the 2017 IPC and cross-referenced with the 2018 Uniform Plumbing Code per the Addenda's Plumbing section. Source: Navajo County Addenda & Additions (amended 3-15-22), p.17.; 2018 International Mechanical Code, adopted alongside the 2018 IRC/IBC electrical, plumbing, and mechanical code family. Source: Navajo County Addenda & Additions (amended 3-15-22), p.5.; 2017 National Electrical Code (NEC) — electrical inspections are based on the 2018 IRC/IBC and referenced with the 2017 NEC. Source: Navajo County Addenda & Additions (amended 3-15-22), pp.5, 17.; Prior code baseline: Navajo County adopted the 2015 IBC/IRC effective June 11, 2019 (replacing a 2006 IBC edition, after the county's ISO Public Protection Classification rating was threatened with a downgrade for an out-of-date code); the county subsequently updated to the current 2018 IRC/IBC family reflected in the March 2022 Addenda & Additions. Source: White Mountain Independent, 'Navajo County updates building code' (wmicentral.com).; Building official has discretion to require an Arizona-registered architect/engineer stamp for any commercial-use structure, and for steel, log, or post/pole-and-beam construction, at the discretion of the Technical Advisory Board and Board of Supervisors. Source: Navajo County Addenda & Additions (amended 3-15-22), p.6.; Commercial buildings exceeding 3,000 sq ft of floor area intended for continuous occupancy of more than 20 persons must be designed and stamped by an engineer registered by the Arizona Board of Technical Registration, per A.R.S. § 32-144. Source: Navajo County Construction Permit Application Instructions (revised January 2, 2025).; Where a conflict exists between codes adopted by Navajo County or the State of Arizona and the Addenda and Additions, the more restrictive provision governs; the Navajo County Technical Advisory Board acts as the Board of Appeals. Source: Navajo County Addenda & Additions (amended 3-15-22), p.5.. Local amendments apply — see the Unincorporated Navajo County overview page for the full list.
Yes — a Construction Permit Application with scaled sign drawings and a site plan is required, reviewed by the County Engineering Department and Planning & Development Services. Source: Navajo County Construction Permit Application Instructions (revised January 2, 2025).
Sources & verification
Key facts verified against official sources. Last reviewed 2026-07-20.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Navajo County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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