When does a retaining wall need a Seattle permit?
A source-led guide to Seattle's four-foot rule, ECA review, grading, drainage, property-line work, and the questions to resolve before requesting bids.
Read field note →Field notes
Research the project before the contractor.
Short, source-minded guides for asking better questions about Seattle slope and wall work.
How to check a Washington contractor before signing
A source-led sequence for checking Washington contractor registration, legal identity, bond, insurance, workers' compensation, enforcement history, bids, and contract terms.
Read field note →Retaining wall systems seen on Seattle slopes
How reinforced-concrete, mechanically stabilized earth, soldier-pile, anchored, and rockery systems differ—and which site questions must be answered before choosing one.
Read field note →Drainage and early retaining-wall warning signs
A cautious guide to documenting wall movement and drainage after rain, recognizing possible landslide indicators, and knowing when observation should stop and professional evaluation should begin.
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