Plumbing Permit in Evanston, Wyoming

Yes. Building permits and inspections are required for installation of irrigation systems in Evanston, and a backflow preventer (airgap or reduced-pressure type) must be installed per the Plumbing Code and Wyoming DEQ requirements.

In Evanston, the published Building Permit Fee (covers plumbing work; no separate plumbing fee line) is: $0.010 × project cost (minimum charge $30.00). Additional published fees: Water Connect & Tap — 3/4" service (FY25-26) — $1,250.00; Wastewater/Sewer Connection & Tap — 3/4" service (FY25-26) — $1,500.00; Construction Water (per 1,000 gallons, up to 9,999 gal, FY25-26) — $10.00. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a plumbing permit in Evanston typically runs 1–10 business days. This is an estimate, not a published figure — confirm current review times with City of Evanston Engineering & Planning Department — Building Department at (307) 783-6470.

Depending on your project, Evanston may also ask for: Airgap backflow preventer guidance; Reduced Pressure Backflow Preventer guidance. See the required-documents checklist on this page for details on each.

Evanston requires 4 inspection(s) for a plumbing permit, in order: Underground Plumbing, Rough Plumbing, Sewer/Water Service Lines, Final. Schedule each through City of Evanston Engineering & Planning Department — Building Department ((307) 783-6470).

Apply through City of Evanston Engineering & Planning Department — Building Department at 33 Allegiance Circle, Evanston, WY 82930. Phone: (307) 783-6470, email: jhergert@evanstonwy.org. Office hours: Monday through Thursday 7:30 am–5 pm; Friday 7:30 am–1:30 pm (City Hall hours; contact Building Department directly for its own hours). Official information: https://engineering-planning-evanstonwy.hub.arcgis.com/pages/5d3f1221a8a94c8d9d12e0c6e6d8bea9.

Evanston, Wyoming has adopted: 2024 International Building Code (IBC) — current edition per City of Evanston Building Permit Legal Requirements; 2024 International Residential Code (IRC) — residential construction incorporates current IRC requirements per Evanston City Code § 7-52.1; 2021 Uniform Plumbing Code (UPC) provision cited for irrigation backflow prevention (UPC 608.17.5); confirm current adopted plumbing code edition with the Building Department; Evanston local design load values (wind, seismic, snow, frost depth) apply IN ADDITION TO the International codes — see localAmendments; IMPORTANT: Electrical work in Evanston is NOT governed by a City-adopted electrical code — electrical permitting and inspection is performed by the Wyoming State Fire Marshal's Office (Chief Electrical Inspector) under the state's default statewide electrical program (W.S. § 35-9-119), per the WSFM 'LOCAL AND STATE JURISDICTIONS' chart (Evanston = ELEC INSP/PR: S/S) and confirmed directly by the City's own Building Inspection Information sheet ('Electrical: Contact State of Wyoming Electrical Inspector'); IMPORTANT: Building PLAN REVIEW in Evanston has a state-law overlay — per W.S. § 35-9-108, the Wyoming State Fire Marshal must review and approve plans (in addition to city review) for: buildings/structures owned or leased by state/local government; buildings for general public access exceeding 5,000 sq ft total floor area; buildings over one story (incl. apartments/condos); childcare centers for more than 10 children; public bars/lounges/restaurants/night clubs/lodge halls/theatres/churches/public meeting places regardless of size; aboveground fuel dispensing facilities; alternate energy generation feeding the utility (incl. solar); Type I commercial kitchen exhaust hoods; spray finish applications; and buildings changing occupancy type — this matches the WSFM jurisdictions chart classification of Evanston building plan review as having a State component (STATE BLDG INSP/PR designation) alongside the City's own local building permit issuance and inspection program. Local amendments apply — see the Evanston overview page for the full list.