State Environmental Policy Act (SEPA) Code
What Is It?
Our State Environmental Policy Act (SEPA) ordinance requires that we assess the environmental impacts of projects that meet certain criteria. The SEPA section of our Seattle Municipal Code (SMC) is based on the provisions of the State Environmental Policy Act in the Washington Administrative Code (WAC).
If SEPA is required for your project, we will do the review as part of the land use permit process.
Read the Code
- Tip 208, When Environmental Review Is Required in Seattle
- Environmental (SEPA) Checklist
- Director's Rule 12-2012, SEPA Exemptions from Environmental Review Requirements When Establishing, Changing or Expanding a Use
- Director's Rule 9-2012, Updates to SEPA Review Thresholds for Infill Residential and Mixed-Use Development in Urban Centers and Certain Urban Villages
- Director's Rule 29-2006, Environmental Review Sign
- Director's Rule 2-98, Clarification of State Environmental Policy Act (SEPA) Historic Preservation Policy for Potential Archeologically Significant Sites and Requirements for Archeological Assessments
- Director's Rule 41-96, Selection of Environmental Impact Statement (EIS) Consultants
- Director's Rule 51-88, Requirement for a Master Use Permit when there is an Establishment, Expansion or Change of Use
- Director's Rule 49-88, SEPA Exemption on Split-Zoned Lots