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We prioritize direct answers, plain language, decision checklists, and links to the responsible public agency or primary technical source. Dates are shown when guidance can change.
Published information is educational. It does not replace a site visit, engineering, manufacturer requirements, a written contract, or a determination from the building official. Conditions discovered in the field can change scope, price, and schedule.
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Planning content reviewed July 21, 2026. Confirm address-specific requirements before work begins.
