2021 Seattle Construction Code Update
The Seattle construction codes are being updated to the 2021 code editions and include the building, residential, existing building, energy, mechanical, plumbing, fuel gas, wildland urban interface, and fire codes. The Boiler and Pressure Vessel Code is also being updated to the 2023 edition. The City of Seattle adopts the Seattle construction codes after Washington state adopts the state construction codes. The Washington state 2021 Construction Codes effective date is currently March 15, 2024. The target implementation date for the 2021 Seattle Construction Codes is delayed to no sooner than July 1, 2024, as we continue our City ordinance process.





Comment Opportunity for Updated Tree Requirements Tip
The Seattle Department of Construction and Inspections (SDCI) recently updated several of our Tips related to the Tree Protection Code (SMC 25.11) to provide additional clarification on our current tree regulations. In particular, SDCI substantially updated Tip 242A, Tree Requirements Associated with Development, to include information related to the basic tree protection area and the allowance to remove Tier 2 trees in certain instances. Tips are one tool the department uses to explain complex codes to the public and help customers understand the regulations. Tips also give guidance on how applicants should show compliance with codes in a permit application.