Fees, valuation & enforcement
Permit fees are a project input. Enforcement exposure is a project risk. Use the official schedule where available, then confirm valuation, trade permits, plan review, and inspection charges with the Authority Having Jurisdiction.
Official fee pathway
The final charge may depend on declared construction value, occupancy classification, square footage, plan review, state surcharges, trade permits, technology fees, and inspection activity. Do not use a neighboring city’s fee table as a substitute for this jurisdiction.
Fee desk contact
307-777-7288; Johnson County Planning Department 307-684-1907
Ask the counter to confirm current charges before submitting a project with multiple trades or a change of use.
Financial exposure
Plan for building, mechanical, plumbing, electrical, fire, energy, zoning, septic, right-of-way, or other reviews that the project scope triggers. The lowest initial permit fee is not always the lowest project cost.
Enforcement exposure
When work begins without authorization, the agency may halt the site, require corrective plans, impose additional fees, withhold inspection release, or require concealed work to be exposed for review.
Closeout exposure
A missing final inspection or certificate can complicate occupancy, refinancing, sale, insurance, and utility connection. Preserve the approved plans and signed inspection record through closeout.
Professional field note
Even when a cosmetic or minor project does not require a building permit, zoning, floodplain, shoreline, historic, utility, fire, or right-of-way controls may still apply. Confirm the full jurisdictional picture before work starts.
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
This record is marked State Fallback. Confirm whether a city, state agency, or other local authority controls the parcel 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 307-777-7288; Johnson County Planning Department 307-684-1907.
The State Fire Marshal accepts or rejects a plan-review submission for review within five business days and completes review of a complete accepted submittal within 21 business days; resubmittals are reviewed within 10 business days after receipt or the original 21-day period, whichever is later. County review times are N/A.
For a guaranteed state electrical inspection in Johnson County, obtain the wiring permit through the state portal and contact State Electrical Inspector Matt Mullen at 307-752-0348. State fire/life-safety plan-review projects receive construction inspections and must pass before a Certificate of Occupancy or Letter of Compliance. County septic inspections must be arranged through the Planning Department at 307-684-1907 at least 24 hours before backfilling; a Certificate of Completion is required when an inspection was not completed.
Johnson County reviews land development, subdivisions, lot divisions and exemptions and administers rural addressing, septic and floodplain development, but its zoning regulations remain a draft that the commissioners have not adopted and the County publishes no general building-permit or building-inspection program. For projects within Wyoming State Fire Marshal jurisdiction, the state enforces the 2024 International Fire, Building, Fuel Gas, Mechanical and Existing Building Codes and, effective July 1, 2026, the 2026 National Electrical Code. County subdivision, floodplain and small-wastewater rules apply separately. N/A for a general county building permit because Johnson County publishes no such program and its zoning regulations remain unadopted. State Fire Marshal plan review is limited to specified public and life-safety projects, including government buildings, schools, public-access buildings over 5,000 square feet, larger child-care facilities, multistory and assembly occupancies, qualifying remodels and occupancy changes, fire-protection systems, alternative energy, aboveground fuel tanks, commercial kitchen hoods, spray-finishing work and RV/camping/mobile-home park site plans. Other private work may still require a state electrical permit or County septic, floodplain, subdivision or addressing approval.
Why permit costs vary
Building departments commonly calculate charges from valuation, occupancy, floor area, project type, plan review effort, trade scope, state surcharges, and inspection activity. A remodel that appears small on paper may still trigger structural, energy, fire, or utility review. Ask the permit counter which disciplines apply before you finalize the construction budget.
The same discipline applies to enforcement. Correcting unpermitted work after finishes are installed can require demolition, revised plans, additional inspections, and schedule disruption. Authorization is usually the less expensive project-management decision.