Riverton building permits

Requirements

• Submit a completed Application for Building Permit (or Simple Permit Application for smaller scopes)
• Submit two (new residential checklist) or three (per the application's submittal checklist) complete sets of plans and specifications, or one electronic copy
• Site plan showing property lines, north arrow, easements, dimensions, and all development
• Floor plans, building elevations (N/S/E/W), foundation plan, roof/truss plan with engineered truss data
• Framing sections (wall height, eave width, roof pitch) and other construction details
• A letter from the Director of Public Works certifying availability of water and sewer service for the land (RMC § 15.04.010.A.1.a(4))
• Engineering calculations required for any design deviating from conventional IBC/IRC framing, stamped by a Wyoming-licensed architect/engineer
• Projects requiring professional design: most new commercial/industrial buildings, buildings 3+ stories, residential buildings with 5+ living units
• Automatic sprinklers NOT required for detached one- and two-family dwellings or townhouses built to the IRC (locally amended IBC § 903.2.8 exception)
• Planning Division approval of setbacks (RMC § 17.16.070) required before building permit submittal

Required documents

• RequiredApplication for Building PermitCity of Riverton Community Development Department application form; covers building, plumbing, electrical, and mechanical scope on one combined form
• RequiredResidential/Commercial Plan Submittal Checklist for Building PermitsCity's checklist of required drawings/documents for new residential and commercial construction
• RequiredSite PlanScaled site plan with property lines, building outline, adjacent streets, easements, dimensions
• RequiredConstruction DrawingsComplete floor plans, elevations, foundation plan, framing sections, and roof/truss plan
• OptionalTruss Layout and CalculationsTwo copies, signed and sealed by a Wyoming-licensed engineer, if applicable
• OptionalEngineering CalculationsTwo copies, signed/sealed by architect/engineer of record, for any non-conventional structural design

Fee schedule

Requirements

• Alterations per square footage of alteration area, or $50.00 minimum
• Equipment/material including labor charged at 1% of contract amount for the alteration category, subject to type-specific minimums (siding/soffit/facia/gutter $25 min; mechanical equipment replacement $52 min; window/door replacement without structural alteration needs a permit but no fee, with structural alteration $52 min)
• Plans must show scope, dimensions, structural details, and connection to the existing structure
• Planning Division approval of setbacks required before permit submittal for additions

Required documents

• RequiredApplication for Building PermitSame combined application form used for new construction; select Addition/Alteration construction type
• RequiredSite PlanProperty lines, existing structures, proposed addition footprint, setbacks
• RequiredConstruction DrawingsPlans showing scope of addition/alteration including framing and MEP as applicable

Fee schedule

Requirements

• Permit required for installation, alteration, addition, or repair of electrical wiring, devices, or equipment (RMC § 15.08.080)
• Issued only to a licensed Wyoming electrical contractor registered with the City of Riverton, OR to a homeowner performing work with their own hands in their own owner-occupied one-family dwelling (RMC § 15.08.080.A.1–2)
• Electrical contractors must hold a current Wyoming electrical contractor's license (state-issued) AND register with the City of Riverton (RMC § 15.08.050)
• Temporary electric service (temporary meter base with approved grounding) may be installed by a licensed contractor or homeowner and requires a temporary-service inspection
• Rough electric inspection required after all wiring and boxes are installed, before insulation/sheetrock
• Certain minor work is exempt from permitting per NEC Article 80 Section 80.19 (e.g., portable cord-and-plug appliances, like-for-like fixture/overcurrent-device replacement, low-voltage Class 2/3 circuits under 25V/50W) — RMC § 15.08.080.A.5
• Riverton's own Electrical Code (RMC § 15.08.110(B)(2)) adopts 'the latest edition' of the NEC by dynamic reference — currently the 2026 NEC, effective statewide July 1, 2026 per WSFM, matching the statewide default edition (the 2023 NEC applied from July 1, 2023 until then)

Required documents

• RequiredApplication for Building PermitRiverton's combined application form includes an ELECTRICAL section (wiring modifications, service upgrade, panel modification, meter modification/relocation, electrical service size)
• RequiredContractor RegistrationWyoming-licensed electrical contractors must register with the City of Riverton before pulling permits (RMC § 15.08.050)

Fee schedule

Requirements

• Plumbing alteration, sanitary sewer replacement, gas line testing, water heater installation/replacement
• DWV systems (underslab only) tested on completion of rough piping by water (10 ft head, 15 min hold) or air (5 psi / 10 in. Hg, 15 min hold) test — Schedule 40 PVC allowed to be tested with air (locally amended IPC §§ 312.1, 312.3 and IRC § P2503.5.1)
• Backflow prevention: required check valve and expansion tank status noted on the application form
• Water tap size 2 inches or greater requires DEQ (Wyoming Dept. of Environmental Quality) review

Required documents

• RequiredApplication for Building PermitCombined application form; PLUMBING section covers alteration, sanitary sewer replacement, gas line testing, water heater type

Fee schedule

Requirements

• Mechanical equipment replacement, new system installation, or alteration
• Gas piping installation requires gas piping test inspection
• Combined application form covers MECHANICAL scope (new system, alteration, component replacement)

Required documents

• RequiredApplication for Building PermitCombined form; MECHANICAL section covers new system, alteration, or component replacement

Fee schedule

Requirements

• Residential reroof over 100 sq ft in area requires a permit
• Commercial reroof charged as a percentage of contract amount

Required documents

• RequiredApplication for Building PermitSelect re-roof as the construction type

Fee schedule

Requirements

• Solar panels and related installation equipment shall not exceed the height limitation for the applicable zoning district (RMC § 17.24.020.A)
• Solar energy system is considered part of the building and counts toward lot area/coverage limitations for the zoning district (RMC § 17.24.020.B)
• Electrical scope (interconnection wiring, inverter, disconnects) requires an electrical permit under RMC Chapter 15.08
• Structural evaluation of the roof/racking attachment recommended given Riverton's 30 psf ground snow load and 100 mph wind design speed (RMC § 15.04.040 local design criteria)

Required documents

• RequiredApplication for Building PermitCombined form covering building/structural and electrical scope for the solar installation
• RequiredElectrical PlanSingle-line diagram, load calculations, disconnect location — required for electrical permit review

Fee schedule

Requirements

• No ADU-specific zoning category exists; R-1, R-2A, and R-4 districts have no provision for a secondary dwelling unit on a single-family lot
• R-2 Residential District (RMC § 17.32.010–.040) permits a duplex (two full living units) as a permitted use: minimum lot area 5,000 sq ft, maximum 2 living units per lot, each unit minimum 425 sq ft floor area, max 40% lot coverage by main + accessory buildings, paved parking/driveway required for multi-family
• A true second unit in Riverton must be built under the standard residential building permit process for the applicable zoning district (R-2 for a duplex) — there is no owner-occupancy requirement, no size-ratio-to-primary-structure limit, and no distinct 'ADU' fee
• Property must first be confirmed as zoned R-2 (or petitioned for rezone) — R-1 does not allow a second dwelling unit

Required documents

• RequiredApplication for Building PermitSame combined application used for any new residential construction; no ADU-specific form exists
• RequiredZoning VerificationConfirm R-2 zoning designation with the Community Development Department's Planning & Zoning division before applying

Fee schedule

Requirements

• Demolition permit required for removal of any structure subject to the building code
• Charged at $0.13 per square foot (same rate tier as storage/accessory structure fees)
• Utility disconnects should be coordinated with Public Works prior to demolition

Required documents

• RequiredApplication for Building PermitSelect 'Demolition' as the construction type on the combined application form

Fee schedule

Requirements

• Three complete sets of construction drawings carrying the seal of a Wyoming-licensed architect/engineer (or one electronic copy), per the New Commercial Construction Submittal Checklist
• Cover sheet indicating scope of work, applicable codes, construction type, and occupancy/code analysis
• Site plan showing utility connections to city sewer, storm drain, and water
• Floor plans with occupancy, egress, and dimension detail
• Structural, plumbing/mechanical, and electrical plans (electrical plans must include a complete one-line diagram)
• Energy code compliance forms imprinted on full-size plan sheets; accessibility compliance
• Food processing/manufacturing facilities must separately contact Consumer Health Services (307-777-7211) for review before construction
• Fire-resistive construction and required fire protection system details, plus a Geotechnical Report if applicable
• Hazardous Materials Disclosure form (OES form) required for applicable occupancies

Required documents

• RequiredApplication for Building PermitSame combined form; select Commercial + Alteration of Structure
• RequiredNew Commercial Construction Submittal ChecklistDetailed checklist of required plan sheets and supporting documents for commercial projects/remodels
• OptionalHazardous Materials Disclosure (OES form)Required for occupancies handling hazardous materials
• OptionalAccessibility For Existing Buildings Compliance formRequired if applicable to the scope of work

Fee schedule

Requirements

• Fences not exceeding 7 feet in height and installed on the owner's own property: no permit required
• Fences installed in the right-of-way area: permit required
• Fences exceeding 7 feet in height: permit required, engineering may be required

Required documents

• RequiredFence Permit ApplicationPart of the standard permit application process; contact Community Development for the specific form

Fee schedule

Requirements

• Electrical permit required for the new/upgraded circuit and EVSE connection under RMC Chapter 15.08
• Installation must comply with NEC Article 625 (Electric Vehicle Power Transfer System) as adopted by the City
• A standalone new dedicated circuit for an EVSE is expected to fall under the 'Electrical Alteration' fee category; a project also requiring a panel/service upgrade would fall under 'Electrical Service Upgrade' instead
• If installed as part of new construction, the EV charger circuit is covered by the new-construction per-square-foot fee, which 'includes building and all building systems' per Resolution No. 1355

Required documents

• RequiredApplication for Building PermitCombined form covering the electrical scope for the EV charger installation
• RequiredElectrical PlanSingle-line diagram, load calculations, and disconnect location — required for electrical permit review

Fee schedule

Requirements

• A building permit is required for all signs EXCEPT inflatable signs, hand-carried signs, carnival/county fair signs, banners, placard signs, and political election/campaign signs, plus any exemptions separately listed in the IBC (RMC § 17.22.110)
• Signs requiring a permit must be designed and constructed for a 90 mph wind load, with the design stamped by a structural engineer (RMC § 17.22.100.B)
• Commercial ground/pole sign height (measured from mean ground level): 40 ft max on the Federal Blvd corridor north of Webbwood/south of Monroe; 30 ft max on the Federal Blvd corridor south of Webbwood/north of Monroe and on the Main Street corridor; 20 ft max on all other commercially zoned property (RMC § 17.22.050.A)
• Residential ground/pole sign height: 4 ft max, except flagpoles (RMC § 17.22.050.B)
• Maximum sign face area: 200 sq ft per face generally; 2 sq ft for a home-occupation ID sign; 1 sq ft for a home address/occupant ID sign; 6 sq ft per face for temporary signs (realtor, garage sale, etc.) (RMC § 17.22.060)
• Billboards (freestanding signs exceeding 200 sq ft of facing) are prohibited citywide (RMC § 17.22.150)
• Signs on residential-zoned property are restricted to specific temporary (campaign/lease/sale/construction/home-improvement, ≤6 sq ft) or dwelling-identification (≤2 sq ft, attached to the dwelling) types only (RMC § 17.22.080.C)
• No sign may encroach into a right-of-way or easement except as allowed by the IBC, for hand-carried/temporary signs, or under the specific Main Street corridor luminaire-line rule (RMC § 17.22.080.A)
• A sign altered or modified on more than 25% of its face area, with the face surface fully replaced, or with its support structure repaired/replaced, is treated as a new sign and must meet all current requirements (RMC § 17.22.070)
• Sandwich board signs are allowed without exceeding 10 sq ft per side, must not impede pedestrian/vehicular traffic, and must be removed at close of business (RMC § 17.22.160) — not separately confirmed whether sandwich boards fall under the permit exemption list or require the standard sign permit

Required documents

• RequiredApplication for Building PermitCity's combined application form; select 'Other – Sign' as the improvement type
• RequiredSign Design/Structural PlansDesign stamped by a Wyoming-licensed structural engineer for the required 90 mph wind load, per RMC § 17.22.100.B
• RequiredSite/Elevation PlanShows proposed sign location, height, and face dimensions relative to property lines, rights-of-way, and (for ground/pole signs) the applicable corridor height zone

Fee schedule

Requirements

• Plan review is required for installation, addition, or alteration of any fire sprinkler, fire alarm, or fire suppression system 'regardless of size or valuation' (Dept. of Fire Prevention & Electrical Safety Rules, Chapter II, Section 1)
• Applications are submitted through the Wyoming State Fire Marshal's eLicensing, ePermit, and ePayment Portal; a separate Department-provided form/packet is required for fire sprinkler systems, fire alarm systems, and other fire suppression systems respectively (Ch. II § 1(e))
• Systems designed by a NICET Level III or greater professional must be prepared under the direct supervision of a Wyoming-registered design professional (P.E.); pre-engineered manufactured systems require submitted manufacturer verification instead (Ch. II § 1(c)(ii))
• Submittal must include four sets of plans and one set of specifications (or one electronic CAD/DWF-format set for sprinkler and alarm systems), the plan review fee, return postage, and a completed Project Information Sheet (Ch. II § 2(d))
• Fire alarm and fire sprinkler plans are submitted as successive PHASE plans after the Department approves the initial (usually building/architectural) plan set — not as a single combined submittal (Ch. II § 2(c))
• Riverton has NOT adopted a local fire-plan-review delegation ordinance comparable to its own Electrical Code (RMC Chapter 15.08); confirm current Authority Having Jurisdiction status directly with the Riverton Community Development Department at (307) 856-2999 and the WSFM Office at (307) 777-7288 before applying, since delegation status is transferred/revoked by administrative letter under W.S. § 35-9-121 and could change without a corresponding City ordinance

Required documents

• RequiredProject Information SheetDepartment-provided form that must accompany every plan review submittal (Ch. II § 2(a))
• RequiredFire Sprinkler / Fire Alarm / Suppression System Plan Review PacketSystem-specific Department packet and checklist (separate packets exist for fire alarm, sprinkler, and special-hazard/alternative suppression systems)
• RequiredEngineered or Manufacturer-Verified System PlansStamped by a Wyoming-registered P.E. for NICET III+ designed systems, or accompanied by manufacturer verification for pre-engineered systems
• OptionalApplication for Building PermitRiverton's combined City form, needed in parallel if the fire-protection system is installed as part of a broader building or tenant-improvement project

Fee schedule

Requirements

• Any change in the character or use of a building or tenant space that changes its IBC occupancy classification is evaluated against IEBC Chapter 10 'Change of Occupancy' as adopted (2024 IEBC, Ordinance No. 25-003)
• If the new occupancy classification imposes more restrictive requirements (fire rating, means of egress, accessibility, structural, etc.) than the previous occupancy, compliance with the applicable new-occupancy provisions of the IEBC/IBC must be completed and verified before a new Certificate of Occupancy is issued
• No dedicated 'change of use' application form exists — use the combined 'Application for Building Permit,' describing the occupancy change and any associated alteration scope
• Food processing/manufacturing or other health-regulated uses moving into a space must separately contact Consumer Health Services at (307) 777-7211 before construction begins, the same requirement documented in this file's commercial-tenant-improvement-permit entry
• A Certificate of Occupancy is issued after final inspection confirms the space meets the code applicable to its (new) occupancy classification — consistent with the Final Inspection description already documented in this file's residential-building-permit and commercial-tenant-improvement-permit entries

Required documents

• RequiredApplication for Building PermitCombined City form; select the applicable construction type (e.g., Commercial + Alteration of Structure) and describe the occupancy change
• RequiredOccupancy/Code AnalysisNarrative comparing existing vs. proposed occupancy classification and the IEBC Chapter 10 compliance path, consistent with the 'occupancy/code analysis' cover-sheet item already required for commercial submittals in this file's commercial-tenant-improvement-permit entry
• OptionalConstruction DrawingsRequired only if physical alterations are needed to bring the space up to the new occupancy classification's code requirements

Fee schedule