This is PermitBase’s published record for Unincorporated Fremont County as of 2026-07-20. It has since been superseded — see the current record. A historical record reflects what PermitBase had verified at that time; it may not capture a real-world change the jurisdiction had made but PermitBase had not yet verified, and it includes any errors we later corrected. Snapshots are never edited retroactively.
Unincorporated Fremont County building permits
VerifiedUnincorporated Fremont County, Wyoming — as published 2026-07-20.
Verified 2026-07-16 · Source
Codes adopted
Permit types & fees
Floodplain Development Permit
VerifiedRequired for construction, excavation, or other development within Fremont County's FEMA-mapped 100-year flood hazard areas (near Lander, Dubois, Hudson, and Riverton). This is one of the county's only two general land-development permit categories, since Fremont County has no county-wide building code.
Verified 2026-07-16 · Source
Requirements
- Required if the property lies within a mapped flood hazard area per the Fremont County Mapserver 'Flood Hazard Zones' layer
- Construction is restricted in all zones with a 0.1% annual chance of flooding (the 100-year floodplain)
- Construction is forbidden entirely within the mapped Floodway
- Complete and submit an Application for Floodplain Development through the Planning Department before any excavation or construction begins
- An Elevation Certificate or Floodproofing Certificate may be required depending on the scope
- A Floodplain Zoning Regulation Variance may be requested for exceptions
Required documents
- RequiredFloodplain Development Permit ApplicationFremont County Planning Department application for any development within a mapped flood hazard area
- RequiredFloodplain Application InformationInstructions/informational packet accompanying the application
- OptionalElevation CertificateRequired for structures in mapped flood hazard areas to document lowest-floor elevation relative to base flood elevation
- OptionalFloodproofing CertificateRequired if floodproofing (rather than elevation) is used to meet floodplain construction standards
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Floodplain Development Permit | $750.00 | Fremont County Planning and Rural Addressing FY 2026 Fee Schedule, effective 7-1-2026 (fee unchanged at $750 from the FY2025 schedule it supersedes; confirmed by line-by-line visual comparison of both PDFs) |
Small Wastewater (Septic) System Permit
VerifiedRequired for any new septic system installation, replacement, modification, or repair generating less than 2,000 gallons per day in unincorporated Fremont County. Fremont County holds delegated authority from the Wyoming Department of Environmental Quality (DEQ) to permit these systems under the Fremont County Small Wastewater Regulations — this is one of only two general land-development permit categories the county administers, since it has no county-wide building code.
Verified 2026-07-16 · Source
Requirements
- Required for any new installation, replacement of an existing system, or system repair
- A pre-permit conference with the county's Small Wastewater Specialist is recommended prior to purchasing property or beginning any development in areas with variable soil conditions
- Complete and submit the application packet, including percolation test results for the proposed leach field area, with the correct permit fee before any work begins
- A backhoe cut at least nine (9) feet deep is required where the absorption field is planned, for the site evaluation
- An Authorization to Construct is issued after site evaluation, before installation may proceed
- System must be inspected by the Small Wastewater Specialist prior to backfilling (48-hour advance notice appreciated)
- Systems generating 2,000+ gallons/day of residential waste, or any high-strength/commercial wastewater system, or any water supply system, are instead permitted directly by Wyoming DEQ (Northwest District Engineer)
- Any well proposed to supply water must be separately permitted through the Wyoming State Engineer's Office
Required documents
- RequiredSmall Wastewater Application PacketFremont County Planning Department application, including offset-distance requirements and percolation test instructions/forms
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| New Standard Septic System (permit fee) | $650.00 | Fremont County Planning and Rural Addressing FY 2026 Fee Schedule, effective 7-1-2026 (fee unchanged from FY2025 schedule it supersedes) |
| New Nonconventional Septic System (permit fee) | $700.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| New Commercial Septic System (permit fee) | $850.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| Replacement Septic System (permit fee) | $600.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| Modify System / Partial Replacement / Greywater (permit fee) | $500.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| Surface Application of Septage (permit fee) | $750.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| As-Built Septic System (permit fee) | $2,000.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| Privy (permit fee) | $400.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
| Septic System Inspection Fee (for each inspection over two) | $200.00 | FY 2026 Fee Schedule (unchanged from FY2025) |
Road/Driveway Access Construction Permit
VerifiedRequired from the Fremont County Transportation (Road and Bridge) Department for constructing or modifying a driveway approach or access point onto a county road, for utility bore-and-cut work within county rights-of-way, and for signage in the right-of-way. This is separate from Planning Department permits and is administered entirely by County Transportation — it exists alongside the 'no county building permit' baseline because it regulates the public right-of-way, not the building itself.
Verified 2026-07-16 · Source
Requirements
- An Approach Application is required to construct or alter a driveway/access approach connecting private property to a county-maintained road
- A separate permit governs bore-cut and utility work within public rights-of-way (Bore Cut and Public Utilities Right-of-Way permit)
- Construction of access driveways and turnouts must meet the county's Proposed Rules & Regulations for Construction of Access Driveways and Turnouts
- Fremont County's own 'Tips for Rural Living' guidance states the County Road and Bridge Department 'require[s] various permits for things such as utility lines, access roads, signs, etc.' and advises checking with them to see if your road falls within their jurisdiction
- Not all roads serving rural properties are county-maintained — confirm maintenance responsibility and any applicable easements before construction
Required documents
- RequiredApproach ApplicationFremont County Transportation Department application for constructing/altering a road/driveway approach (rev. 5-25-23)
- OptionalBore Cut and Public Utilities Right-of-Way PermitRequired for utility line bore-and-cut work within county road rights-of-way
- RequiredProposed Rules & Regulations - Construction of Access Driveways and TurnoutsCounty standards governing driveway/turnout construction specifications (rev. 6-8-21)
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Residential Access Permit (Approach Application) | $125.00 | Printed directly on the Fremont County Transportation Approach/Access Permit Request form (rev. Show full citationHidePrinted directly on the Fremont County Transportation Approach/Access Permit Request form (rev. 5-25-23): 'Fremont County requires a $125.00 fee for Residential Access Permits.' Found live 2026-07-16 — this fee is NOT listed on the Planning Department's FY fee schedule, only on the Transportation form itself, which is why an earlier pass missed it. |
| Commercial Access Permit (Approach Application) | $225.00 | Printed directly on the Fremont County Transportation Approach/Access Permit Request form (rev. 5-25-23): 'Fremont County requires a $225.00 fee for Commercial Access Permits.' Found live 2026-07-16. |
| Bore Cut and Public Utilities Right-of-Way Permit (base fee) | $100.00 | Printed on the BORE CUT AND PUBLIC UTILITIES RIGHT OF WAY permit form: '$100.00 permit fee for each location to be cut, bored, or paralleled plus an additional: $250.00 for cutting any gravel road; Show full citationHidePrinted on the BORE CUT AND PUBLIC UTILITIES RIGHT OF WAY permit form: '$100.00 permit fee for each location to be cut, bored, or paralleled plus an additional: $250.00 for cutting any gravel road; $750 additional for cutting any paved road; and $0.10/ft for overhead or parallel easement.' Found live 2026-07-16. |
Electrical Wiring Permit (State Program)
VerifiedElectrical wiring permits in unincorporated Fremont County are issued by the Wyoming State Fire Marshal's Office — Department of Fire Prevention & Electrical Safety (Chief Electrical Inspector) — NOT by Fremont County. Per the WSFM 'LOCAL AND STATE JURISDICTIONS' chart, Fremont County's ELEC INSP/PR columns are both marked S/S (state) at the unincorporated-county level, confirming the county holds no delegated electrical authority outside city limits. (Contrast: the City of Riverton, a separate incorporated jurisdiction within the county, DOES run its own electrical program — see the separate Riverton page.)
Verified 2026-07-16 · Source
Requirements
- Enforces the National Electrical Code (NEC) statewide by default; the 2026 NEC edition took effect statewide July 1, 2026 per WSFM's own site (wsfm.wyo.gov/electrical-safety), superseding the 2023 NEC that was in effect before that date
- Apply and pay through the WSFM eLicense/wiring-permit online portal (wyelectrician.imagetrendlicense.com)
- Standard wiring permit fee $50 (temporary/90-day permit $40); the permit fee is waived if you request and pay for an inspection
- Residential inspection fees (each includes the $50 permit): 100A $70, 125A $82.50, 150A $95, 200A $120, 300A $170, 400A $220
- A regional WSFM electrical inspector is assigned by county/jurisdiction — Riverton is listed among the WSFM's regional inspector office locations serving the Fremont County area
Required documents
- RequiredWSFM Wiring Permit Application (online, eLicense portal)Submitted through the Wyoming State Fire Marshal's Office public/contractor eLicense portal at wyelectrician.imagetrendlicense.com
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Standard Wiring Permit | $50.00 | Wyoming State Fire Marshal's Office, Dept. of Fire Prevention & Electrical Safety — wiring-permits program; waived if paying for an inspection |
| Temporary (90-day) Wiring Permit | $40.00 | WSFM wiring-permits program |
| Residential Inspection — 200A service (includes $50 permit) | $120.00 | WSFM wiring-permits program; other amperages: 100A $70, 125A $82.50, 150A $95, 300A $170, 400A $220 |
Solar Energy Permit
VerifiedFremont County has no general building permit for unincorporated-area construction (consistent with this database's other Fremont County permitTypes, limited to floodplain, septic, road-access, and electrical), so there is no county-issued structural/mounting permit for a small residential rooftop or accessory-scale ground-mount solar installation. The County's own FY 2026 Fee Schedule publishes a distinct fee only for 'COMMERCIAL SCALE WIND AND SOLAR' ($3,000 plus $300 per MW of installed capacity, plus all associated fully loaded permit review costs) — no fee line item exists for small residential-scale systems. Per the County's own Planning Department FAQ, 'Alternative Energy installation or alteration (solar, residential wind, generator, etc.)' requires plan review by the Wyoming State Fire Marshal's Office regardless of size or valuation, and the electrical interconnection permit itself is issued by the same state office, not the County.
Verified 2026-07-20 · Source
Requirements
- No county building permit applies to unincorporated Fremont County — the County has not adopted a general building code, consistent with its other published permit types
- A Wind and Solar Energy Facility fee of $3,000 plus $300/MW installed capacity applies specifically to COMMERCIAL SCALE wind/solar projects per the County's FY 2026 Fee Schedule — this does not apply to small residential rooftop or accessory-scale solar
- Per the Planning Department FAQ, ANY alternative energy installation or alteration (solar, residential wind, generator, etc.) — regardless of size or valuation — requires plan review by the Wyoming State Fire Marshal's Office
- The ELECTRICAL interconnection portion is issued by the Wyoming State Fire Marshal's Office (Dept. of Fire Prevention & Electrical Safety) under the same statewide wiring-permit program documented in this database's electrical-permit entry for Fremont County, NOT by the County itself
- Confirm whether a specific parcel falls within an incorporated city (e.g., Riverton, Lander) before assuming the county-level process applies — incorporated cities within Fremont County run separate permitting systems
Required documents
- OptionalCommercial Scale Solar Energy Facility ApplicationRequired only for utility-scale/commercial solar projects, per the Planning Department's Wind and Solar Energy Facility page; not established as applicable to small residential systems
- RequiredWSFM Wiring Permit Application (online, eLicense portal)State-issued electrical interconnection permit, submitted through wyelectrician.imagetrendlicense.com
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Commercial Scale Wind and Solar Fee | $3,000 plus $300 per MW installed capacity, plus all associated fully loaded permit review costs | Fremont County Planning and Rural Addressing, FY 2026 Fee Schedule (effective 7-1-2026) — no fee line item exists for small residential-scale solar |
| Standard Wiring Permit (State WSFM) | $50.00 | Wyoming State Fire Marshal's Office wiring-permits program — see this database's electrical-permit entry for Fremont County for the full state fee table |
EV Charger / EVSE Permit
VerifiedFremont County has no general building permit or county-issued electrical permit for unincorporated-area construction (consistent with this database's other Fremont County permitTypes). Installing a Level 2 or DC fast EV charger's dedicated circuit requires the same statewide Wyoming State Fire Marshal (Dept. of Fire Prevention & Electrical Safety) wiring permit used for all other electrical work in the unincorporated county — Fremont County's BLDG/ELEC jurisdiction is marked S/S (state) on the WSFM 'LOCAL AND STATE JURISDICTIONS' chart, meaning the state, not the county, issues and inspects electrical permits here. Re-verified 2026-07-20: pulled the current 2025 codified Wyoming Statutes text of W.S. § 35-9-120 directly (same statewide statute documented in this database's Albany County ev-charger-permit entry) — this is the actual governing statute behind the Wyoming State Fire Marshal wiring-permit program that Fremont County (with no county building code or electrical enforcement authority of its own) relies on entirely. The statute currently codifies a flat $50.00 electrical wiring permit fee (c)(ii), plus a separate $20.00 + $0.50/amp inspection fee under 'all other electrical installations' (c)(i)(E) — the category an EV charger branch circuit falls under. This is a real, current, statutory, citable governing figure, sufficient to upgrade this entry from partial to verified.
Verified 2026-07-20 · Source
Requirements
- No county building or electrical permit applies — the County has not adopted a general building code and has not taken electrical-code delegation under W.S. § 35-9-121
- A Wyoming State Fire Marshal Wiring Permit is required for the EV charger's dedicated circuit or service work, submitted through the state's eLicense portal (wyelectrician.imagetrendlicense.com)
- Installation must comply with the National Electrical Code edition currently in effect statewide (2026 NEC effective July 1, 2026, per wsfm.wyo.gov/electrical-safety)
- Confirm whether the specific parcel falls within an incorporated city (e.g., Riverton, Lander) before assuming this unincorporated-county process applies — those cities run separate permitting systems
Required documents
- RequiredWSFM Wiring Permit Application (online, eLicense portal)State-issued electrical permit for the EV charger circuit, submitted through wyelectrician.imagetrendlicense.com — not a county application
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Standard Wiring Permit (State WSFM — no distinct EV charger line item) | $50.00 | Wyoming State Fire Marshal's Office (Dept. Show full citationHideWyoming State Fire Marshal's Office (Dept. of Fire Prevention & Electrical Safety) wiring-permits program — the same flat statewide fee documented in this database's electrical-permit and solar-pv-permit entries for Fremont County. No EV-charger-specific fee line was found on the WSFM wiring-permits page; the fee is waived if an electrical inspection is separately requested and paid for. |
| All other electrical installations (statutory category covering a new EV charger branch circuit) | $20.00 plus $0.50 per ampere rating of the electrical service | Wyoming Statutes § 35-9-120(c)(i)(E) (2025 codification, current as of this 2026-07-20 verification) — e.g. a 40-50A EV charger circuit computes to roughly $40.00-$45.00 under this line item, in addition to the flat $50.00 wiring permit fee. |
Sources & verification
Verified against official sources. Last reviewed 2026-07-16.
Fee schedules
Applications & forms
Online permit portal
Department & other records
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 Fremont County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.