What is a Seattle Master Use Permit (MUP), and when is it required?
Answered by AskBaily Editorial · Updated
Short answer
A MUP is Seattle's design-review + SEPA environmental + zoning entitlement wrapper. It's required for most multi-family work, townhouses, substantial additions in single-family zones, any project triggering a SEPA threshold under WAC 197-11, and most Design Review Board-reviewed projects. A MUP adds 6-24 weeks on top of the building permit clock and is filed through the Seattle Services Portal.
In detail
A MUP is Seattle's design-review + SEPA environmental + zoning entitlement wrapper. It's required for most multi-family work, townhouses, substantial additions in single-family zones, any project triggering a SEPA threshold under WAC 197-11, and most Design Review Board-reviewed projects. A MUP adds 6-24 weeks on top of the building permit clock and is filed through the Seattle Services Portal.
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