What is the Seattle Critical Areas Ordinance, and does it affect my lot?
Answered by AskBaily Editorial · Updated
Short answer
SMC Title 25 regulates development on steep slopes (over 40%), landslide-prone and liquefaction-prone soils, wetlands, riparian corridors, and fish-and-wildlife habitat. Magnolia, Queen Anne, and West Seattle carry significant steep-slope and landslide exposure. A Critical Areas review can require geotechnical reports, setbacks, or mitigation before SDCI issues a permit — add 4-16 weeks when triggered.
In detail
SMC Title 25 regulates development on steep slopes (over 40%), landslide-prone and liquefaction-prone soils, wetlands, riparian corridors, and fish-and-wildlife habitat. Magnolia, Queen Anne, and West Seattle carry significant steep-slope and landslide exposure. A Critical Areas review can require geotechnical reports, setbacks, or mitigation before SDCI issues a permit — add 4-16 weeks when triggered.
This answer is part of AskBaily's seattle regulatory knowledge base. For deeper context — including current code-section references, agency contact details, and recent policy changes — see the [seattle city hub](/seattle) or [the /ask hub](/ask) for related questions.
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