Mandatory Electric Vehicle Supply Equipment (EVSE) Building Standards

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By July 1, 2021, the Washington State Building Code 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 residential R-3, utility, or miscellaneous are exempt from these requirements. Additional terms and conditions apply. (Reference Revised Code of Washington 19.27.540)