Mandatory Electric Vehicle Supply Equipment (EVSE) Building Standards

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By July 1, 2021, the Washington State Building Code Council (Council) must adopt rules for EVSE installation at all new buildings that provide on-site parking. At least one parking space, or 10% of parking spaces rounded to the next whole number, must be made-ready for Level 2 EVSE. Electrical capacity must accommodate the potential to serve a minimum of 20% of the total parking spaces with Level 2 EVSE. For assembly, education, or mercantile buildings, the requirements apply only to employee parking spaces. Buildings classified as utility or miscellaneous are exempt from these requirements. Buildings classified as residential R-3 must implement rules for EVSE installation by July 1, 2024. By July 1, 2024, the Council is required to adopt rules that exceed the minimum requirements set in July 2021. Additional terms and conditions apply. (Reference House Bill 1287,2021 and Revised Code of Washington 19.27.540)