Rock Springs building permits
VerifiedDepartment contacts, adopted codes, permit types, fees, and gotchas for Rock Springs, Wyoming.
Last verified 2026-07-01 · Source · Embed this page’s badge · Version history
Building department
- Address
- 212 D Street, Rock Springs, WY 82901
- Phone
- (307) 352-1540
- webmaster@rswy.net
- Office hours
- Mon–Fri, 8:00 a.m. to 5:00 p.m., closed 12:30–1:30 p.m. for lunch
- Website
- Official site
- Permit portal
- Apply online at Rock Springs's portal
Inspection guide
See how inspections work in Rock Springs — sequence, scheduling & re-inspection fees.
Codes adopted
Wyoming has no statewide-mandated building code for general private construction. Under Wyoming Statute § 35-9-106, the Council on Fire Prevention and Electrical Safety in Buildings adopts minimum fire, building, mechanical, existing-building, and fuel-gas standards (not exceeding the International Codes), but § 35-9-121 makes local enforcement an opt-in delegation: a municipality or county must apply to the State Fire Marshal for local enforcement authority and adopt, by ordinance or resolution, standards equivalent to or more stringent than the state's — otherwise no local building code applies at all. In practice this produces exactly the fragmented picture that describes most of the state: some cities and counties (e.g., Laramie County, Natrona County) have adopted and enforce their own building codes, while many unincorporated county areas genuinely require no building permit for general construction. Electrical is different: under § 35-9-119(a)(i), the Chief Electrical Inspector (Wyoming State Fire Marshal's Office, Department of Fire Prevention and Electrical Safety) enforces the National Electrical Code statewide by default, EXCEPT in localities that have been separately granted their own certified electrical-enforcement authority under § 35-9-121(a) — so electrical permitting may be issued by the state program or by the local jurisdiction depending on which one currently holds delegated authority. Always confirm both the current building-code adoption status (if any) and which entity — state or local — issues the electrical permit with the specific jurisdiction before submitting plans.
- 2024 International Building Code (IBC) — with local amendments; adopted per Rock Springs Municipal Code § 150.04, including Appendix E, Appendix I and Appendix J, excluding Chapter 27
- 2024 International Residential Code (IRC) — with local amendments per § 150.04(D); including Appendix BF, Appendix B, Appendix C and Appendix CA; excluding R-309, P2904, and several Section R-403.3 subsections/tables/figures
- 2024 International Existing Building Code (IEBC) — adopted per § 150.04
- 2024 International Mechanical Code (IMC) — with local amendment per § 150.04(C)
- 2024 International Plumbing Code (IPC) — with local amendment per § 150.04(C); including Appendix D (Degree Day/Design Temperatures), Appendix E (Sizing of Water Pipe Systems) and Appendix C (Structural Safety)
- 2024 International Fuel Gas Code (IFGC) — including Appendix A, Appendix B and Appendix C
- 2024 International Fire Code (IFC) — per City of Rock Springs Building Ordinances page
- National Electrical Code, 2023 edition (NFPA) — adopted per § 150.04; enforced locally by the City Electrical Inspector under Rock Springs Municipal Code §§ 150.30–150.36 (city electrical code), NOT the Wyoming State Fire Marshal default program
Permit types & fees
Residential Building Permit (New Construction)
Required for new single-family dwellings and other one- and two-family residential construction within Rock Springs city limits. Governed by the 2024 IRC as adopted (with local amendments) by Rock Springs Municipal Code § 150.04. Single-family new construction is charged a flat permit fee rather than the valuation table.
Residential Addition / Remodel Permit
Required for additions, remodels, alterations, repairs, and detached garages on existing one- and two-family dwellings in Rock Springs. Charged at 50% of the general valuation-based fee table with no separate plan review fee.
Electrical Permit
Required for electrical wiring, alterations, and new installations within Rock Springs city limits. ISSUED BY THE CITY — Rock Springs holds delegated local electrical-enforcement authority under W.S. § 35-9-121 and runs its own City Electrical Inspector office (Rock Springs Municipal Code §§ 150.30–150.36), distinct from the Wyoming State Fire Marshal's default statewide electrical program. Per the WSFM 'LOCAL AND STATE JURISDICTIONS' chart (updated 5/11/2026), Rock Springs is listed ELEC INSP/PR = L/L.
Plumbing Permit
Required for plumbing installations, alterations, and repairs in Rock Springs. Governed by the 2024 International Plumbing Code (IPC) as adopted (with local amendments) by Rock Springs Municipal Code § 150.04. Charged under the general valuation-based building-permit fee schedule.
Mechanical / HVAC Permit
Required for heating, cooling, ventilation, and fuel gas installations in Rock Springs. Governed by the 2024 International Mechanical Code (IMC) and 2024 International Fuel Gas Code (IFGC) as adopted by Rock Springs Municipal Code § 150.04. Charged under the general valuation-based building-permit fee schedule.
Roofing Permit (Reroof)
Required for roof replacement (tear-off and reroof) on residential and commercial buildings in Rock Springs. Governed by the 2024 IBC/IRC as adopted by § 150.04. Residential reroofs are charged at 50% of the valuation table as a residential alteration; a Detail Sheet — Roof is available from the Building Inspection Office's Document Center.
Solar PV Permit
Required for installation of rooftop or ground-mounted solar photovoltaic systems in Rock Springs. Processed as a standard building permit under the 2024 IBC/IRC and 2023 NEC, subject to the general valuation-based fee schedule, with electrical inspection performed by the City Electrical Inspector.
Accessory Dwelling Unit (ADU) Permit
Rock Springs' Zoning Ordinance (Rock Springs Municipal Code Chapter 157) explicitly permits ACCESSORY DWELLINGS as a use in the R-2 Low Density Residential Zone (§ 157.086(A)(2)), with detailed development standards at § 157.086(B)(13). An accessory dwelling requires BOTH a zoning determination (that the property is properly zoned R-2, or another zone where the use is separately listed in the Table of Uses) and a standard residential building permit for construction.
Demolition Permit
Required for demolition of buildings or structures in Rock Springs. Charged a flat fee, and a dedicated 'Permit - Demolition' document is available from the Building Inspection Office's Document Center.
Commercial Tenant Improvement Permit
Required for interior remodels, additions, and tenant improvements in commercial buildings in Rock Springs. Governed by the 2024 IBC as adopted by § 150.04. Charged under the general valuation-based fee schedule; new projects/additions of 5,000 sq ft or larger trigger the full nonresidential checklist (Wyoming-licensed design professionals for architectural, structural, mechanical/plumbing, and electrical plans).
EV Charging Station Permit (Electrical Permit)
Required for installation of a Level 2 (or higher) electric vehicle charging station/EVSE in Rock Springs, processed as a standard electrical permit under the 2023 NEC (including Article 625, Electric Vehicle Power Transfer System) as adopted by the City. Rock Springs Municipal Code § 150.08(B) has no dedicated electrical-only fee line, let alone an EV-specific one — the same finding this file's electrical-permit and solar-pv-permit entries document — so an EV charger install is charged under the general valuation-based building-permit fee schedule, with electrical inspection performed by the City's own Electrical Inspector program (not the state).
Sign Permit
Rock Springs regulates signage through its Zoning Ordinance (Rock Springs Municipal Code Chapter 157, §§ 157.195-157.198 'Signs') rather than the Building Code chapter. A $10 sign permit application fee (§ 157.009(B)) accompanies any sign requiring zoning approval or a conditional use permit under the district regulations table at § 157.198; many common sign types are either permitted by right with no approval needed, or prohibited outright, depending on zoning district and sign type.
Fire Sprinkler & Fire Alarm System Permit
Required for the installation, alteration, or removal of an automatic fire sprinkler system or a fire alarm/detection system in Rock Springs, under the 2024 International Fire Code as adopted by Rock Springs Municipal Code § 150.06. The Rock Springs Fire Department's Fire Prevention Bureau (led by a Fire Inspector) reviews life-safety system plans and performs field inspections, while the City's Building Department processes the underlying permit and assesses the plan-review/permit fee under the general valuation-based building-permit schedule — the Fire Department does not separately charge for its plan review or inspections.
Change of Use / Certificate of Occupancy
Rock Springs Municipal Code Chapter 150 (Building Regulations) has no standalone change-of-use or certificate-of-occupancy section — its General Provisions run § 150.01 through § 150.17 (ending with sidewalk construction requirements) and then jump directly to the Electrical Code at § 150.30, with no dedicated C.O./change-of-use ordinance in between. The city instead relies on (1) the stock Certificate of Occupancy provisions of the adopted 2024 International Building Code (Section 111, adopted without local amendment per § 150.04), and (2) its Business License (Occupational Tax License) process, through which a change of occupant/use at an existing commercial building is screened for required Fire Department and Wastewater Department inspections and any Building-Code-mandated improvements.
New residential construction activity
New privately-owned residential construction onlyHousing units authorized by building permits for new privately-owned residential construction — this is not total permit volume (no commercial permits or remodels).
- Latest month (2026-05)
- 1units
1 buildings · $400,000 valuation
- Trailing 12 months
- 15units
12 of 12 months reported · #16 in Wyoming coverage by units
- Year to date (2026 YTD through 2026-05)
- 6units
6 buildings · $2.6M valuation
5 month(s) reported to Census
- Full year 2025
- 21units
21 buildings · $8.4M valuation
Source: U.S. Census Bureau, Building Permits Survey (BPS), 2026-05 vintage. Census survey data — separate from the permit-requirements verification above. All Wyoming building activity
Tips & gotchas
- Sweetwater County contains TWO incorporated cities that each run their own building AND electrical departments: Rock Springs (this page) and Green River (the county seat). They are entirely separate permitting jurisdictions with separate fee schedules — do not use Green River's permit data for a Rock Springs project or vice versa. Per the WSFM jurisdictions chart, unincorporated Sweetwater County outside both cities is state-jurisdiction (BLDG/ELEC = S/S) with no county building permit for private construction.
- Rock Springs is one of the Wyoming cities that runs ITS OWN local electrical inspection program (City Electrical Inspector under Municipal Code §§ 150.30–150.36) rather than defaulting to the Wyoming State Fire Marshal's statewide electrical program — confirmed by the WSFM 'LOCAL AND STATE JURISDICTIONS' chart (ELEC INSP/PR = L/L) and the city's own ordinance creating the office.
- The § 150.08 fee schedule explicitly states the IBC valuation-based fee table 'shall apply to all adopted codes unless specifically listed below' — meaning mechanical, plumbing, electrical, reroof, solar PV, ADU, and commercial tenant-improvement permits all use the SAME valuation table by default. The only carved-out overrides are: single-family homes (flat $1,100, no plan review), residential alterations/additions/detached garages (50% of table, no plan review), demolition ($35), excavation ($35), and mobile home permits in mobile home parks ($55).
- Rock Springs has a Mine Subsidence Risk Map due to the area's coal-mining history — any parcel in a classified area needs a foundation design that specifically mitigates subsidence effects, with a statement from the design engineer on the plans. Contact City Engineering at (307) 352-1540 to check a parcel's classification before design work proceeds.
- Rock Springs' Zoning Ordinance (Chapter 157) explicitly names and defines 'accessory dwellings' as a permitted use in the R-2 zone with detailed standards (§ 157.086(B)(13)) — this is a genuinely grounded ADU pathway, not an inferred one, though it applies only within the R-2 zone (confirm parcel zoning with Planning at 307-352-1540).
- Detached accessory buildings/garages have a hard 1,500 sq ft combined cap without a conditional use permit (§ 157.129(D)-(E)); smaller structures (residential storage sheds/playhouses ≤200 sq ft roof area, decks ≤30 inches above grade, fences ≤6 ft, driveways) need only a Zoning Permit rather than a full building permit (§ 157.220).
- Contractor registration ($125 fee + insurance certificate: $100k property damage, $100k bodily injury/death to one person, $250k to more than one person, City of Rock Springs named as certificate holder) is required before ANY work begins in the city — separate from any Wyoming state trade license.
- Adopted design criteria for Rock Springs: 30 psf ground snow load, 115 mph ultimate wind speed (Exposure C), 42-inch minimum frost depth to bottom of footing — all from the City's own Building Ordinances page, confirmed via § 150.04's checklist-referenced values.
- Restaurants/food service tenant improvements and new construction require a parallel submittal to the Sweetwater County Health Department in addition to the city building permit.