Observed arrival · 2026-08-21
ADU Ledger Tracks the Rules Your City Has Right Now
A cited, city-by-city database of accessory dwelling unit rules across Washington and Colorado, with a parcel lookup for King County.
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✦Pretty
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◉Human
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Why it surfaced
ADU Ledger covers 38 cities, links each rule to a municipal code section, and publishes a changelog showing when local regulations changed. Its “Check my lot” tool resolves a King County address to the relevant city and applies that city’s documented ADU rules.
A cited, city-by-city database of accessory dwelling unit rules across Washington and Colorado, with a parcel lookup for King County.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
ƒJavaScriptBrowser-side code central
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