Codes, exemptions & field inspections
This guide translates the available agency record into a preconstruction checklist for structural scope, minor work, and inspection release. The adopted code and the issuing official control when a field condition is disputed.
Regulatory framework
Mohave County Ordinance 2021-03, revised 02/02/2026, applies in unincorporated county areas and adopts the 2018 International Building, Residential, Fire, Mechanical, Plumbing, Fuel Gas, Existing Building, Property Maintenance, Swimming Pool and Spa, and Energy Conservation Codes, plus the 2017 National Electrical Code, with local amendments.
Inspection lane
Use the county’s SmartGov permitting portal or call the inspection request line at 928-757-0904; gas inspections require the permit number and a 10-psi/15-minute test setup. Inspectors normally work in the field 8:00 a.m.-3:30 p.m.; permit packages and approved plans should be clearly available on site. The county’s permit guidance says one- or two-day notice is usually needed for visits.
Minor-work playbook
2018 IBC R105.2 exemptions include detached one-story accessory sheds/playhouses up to 300 square feet without utilities; fences and block walls up to 7 feet; retaining walls up to 4 feet unless supporting surcharge or impounding liquids; certain grade-level tanks, sidewalks/driveways, finish work such as painting, tiling, carpeting, cabinets and countertops, small above-ground pools, playground equipment, limited awnings, movable fixtures/partitions, residential-storage shipping containers without utilities, same-material residential reroofs, and limited roof-decking replacement. Minor electrical, gas, mechanical and plumbing repairs are also exempt, including residential tank-style water-heater replacement; all other rules and ordinances still apply.
Field rule
A permit exemption generally addresses one narrow construction trigger. It does not automatically waive zoning, land-use, floodplain, shoreline, fire, energy, electrical, utility, septic, or right-of-way requirements. Obtain written confirmation when the project involves a new structure, structural alteration, change in occupancy, or concealed work.
Inspection pipeline
Request with lead time
Use the county’s SmartGov permitting portal or call the inspection request line at 928-757-0904; gas inspections require the permit number and a 10-psi/15-minute test setup. Inspectors normally work in the field 8:00 a.m.-3:30 p.m.; permit packages and approved plans should be clearly available on site. The county’s permit guidance says one- or two-day notice is usually needed for visits.
Preserve access
Do not cover framing, reinforcement, wiring, piping, damp-proofing, or life-safety work until the required inspection has been completed and documented.
Close the record
Retain the approved plans, inspection approvals, correction responses, and final certificate or occupancy release with the property file.
Contractor verification
Use the state licensing system to verify active registration, trade credentials, bond status, and liability coverage where available. Match the legal business name to the proposal and permit application.
Planning reference
A building permit is only one part of statutory compliance. Check the local zoning, ordinance, map, or land-use reference before finalizing setbacks, height, lot coverage, access, drainage, or accessory structure placement.
Open planning reference ↗Source trail
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Mohave County Development Services Department, Building Division (unincorporated county jurisdiction) is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 928-757-0903 (Building, Planning and Zoning); 928-757-0904 (inspection request line); 928-758-0707 (Bullhead City office); 928-347-4904 (Beaver Dam office).
For one- and two-family residential, manufactured-home, addition, modification and accessory-structure applications, administrative completeness review is 10 working days and substantive review is 20 working days, for a stated 30-working-day overall review period. Incomplete applications pause the clock while corrections are supplied; written/electronic extensions may be agreed up to 25% of the overall period.
Use the county’s SmartGov permitting portal or call the inspection request line at 928-757-0904; gas inspections require the permit number and a 10-psi/15-minute test setup. Inspectors normally work in the field 8:00 a.m.-3:30 p.m.; permit packages and approved plans should be clearly available on site. The county’s permit guidance says one- or two-day notice is usually needed for visits.
Mohave County Ordinance 2021-03, revised 02/02/2026, applies in unincorporated county areas and adopts the 2018 International Building, Residential, Fire, Mechanical, Plumbing, Fuel Gas, Existing Building, Property Maintenance, Swimming Pool and Spa, and Energy Conservation Codes, plus the 2017 National Electrical Code, with local amendments. 2018 IBC R105.2 exemptions include detached one-story accessory sheds/playhouses up to 300 square feet without utilities; fences and block walls up to 7 feet; retaining walls up to 4 feet unless supporting surcharge or impounding liquids; certain grade-level tanks, sidewalks/driveways, finish work such as painting, tiling, carpeting, cabinets and countertops, small above-ground pools, playground equipment, limited awnings, movable fixtures/partitions, residential-storage shipping containers without utilities, same-material residential reroofs, and limited roof-decking replacement. Minor electrical, gas, mechanical and plumbing repairs are also exempt, including residential tank-style water-heater replacement; all other rules and ordinances still apply.
Field sequencing matters
Code compliance is not only a plan-review exercise. Footings, reinforcement, framing, fireblocking, wiring, piping, insulation, weather protection, and life-safety systems each have points where the work must remain accessible. Build the inspection calendar into the trade schedule instead of treating it as a final administrative step.
When a project qualifies for a narrow minor-work exemption, keep a written explanation of why it qualifies and confirm that related zoning, utility, fire, energy, or environmental rules do not create a separate approval requirement.
Closeout file
Keep the approved plan set, inspection approvals, correction responses, contractor license verification, final certificate, and any occupancy release together. A clean record protects the owner, builder, lender, insurer, and future buyer.