What should Mason County PUD #3 customers plan before a service change?
PUD 3 requires an application for altered service/added load before a customer or electrician changes a panel, service type or electrical load. The application package includes building permit and State Electrical Inspector approval number, plot plan, deed/parcel number and marked parcel corners.
- Its new-service process requires an application fee, plot plan, new address and building/inspection information, and its notice says the customer must notify PUD 3 after the L&I inspector approves the service.
Mason County PUD No. 3 New Construction & RemodelingMason County PUD No. 3 Notice on Electrical Inspection
What should a panel replacement estimate in Shelton include?
A complete Shelton panel replacement estimate identifies the equipment, circuit work, service capacity, permit holder and final inspection records. Meter and utility connection work should be priced separately from a panel-only replacement.
- Confirm the serving utility for this Mason County address.
- Include the load-review basis and the equipment you want to add.
- Identify restoration, utility charges and inspection closeout in the written scope.
Washington Office of Financial Management — 2026 April 1 city/town/county population and county associationWashington L&I: Electrical permits, fees and inspections
Shelton housing-age context
55.3% of housing units were built before 1980: 2,131 of 3,856 housing units. 2024 ACS 5-year estimates; universe: total housing units.
Calculation and uncertainty
Calculation: (B25034_007E+B25034_008E+B25034_009E+B25034_010E+B25034_011E)/B25034_001E. Variable: B25034 (year structure built). The derived share margin of error was not propagated. Source component and total margins of error are retained in the research data; this share is an estimate.
Building age does not establish electrical-panel condition or a need for replacement. Equipment condition and the planned work need their own assessment.
U.S. Census Bureau — 2024 ACS 5-year B25034 estimates and MOEsSources and scope
Primary-source research reviewed October 17, 2026 for shelton electrical panel replacement & service upgrades. Code, utility standards and administrative guidance have different roles. Confirm current requirements for the project address.
- Washington L&I — city electrical permits and inspections
- Washington Office of Financial Management — 2026 April 1 city/town/county population and county association
- Washington Ecology Electric Utility Service Areas — Shelton Census internal-point query
- Washington Ecology — Electric Utility Service Areas layer description
- Washington Ecology — Electric Utility Service Areas metadata (content May 31, 2024)
- U.S. Census Bureau 2024 Gazetteer Places — INTPTLAT / INTPTLONG
- Mason County PUD No. 3 New Construction & Remodeling
- Mason County PUD No. 3 Notice on Electrical Inspection
- Washington L&I: Electrical permits, fees and inspections
- U.S. Census Bureau — 2024 ACS 5-year B25034 estimates and MOEs
- U.S. Census Bureau — exact variable labels and universe
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