Twelve King County cities in the lot checker — and Auburn’s own zoning map is behind Auburn’s own code

Auburn, Bothell, Burien, Issaquah and Sammamish join the parcel checker, which now answers for twelve of the thirteen King County cities in this ledger. As with the previous five, the work was not reading each city's ADU chapter — we already had those verified — but establishing which zoning districts permit an ADU at all, which our corpus records as prose rather than as a list. Each city's use table was read directly. Three results stand out. Burien does not follow Renton and Federal Way in shutting ADUs out of multifamily zones: its code allows one 'in all residential zones and in any zone in which residential uses are allowed', so RM parcels qualify. Issaquah is broader still, permitting ADUs across single-family, multifamily, mixed-use and its central business district alike. And Sammamish has no accessory-dwelling row in its use table at all — the right attaches to a single-family detached residence, which the table permits in R-1 through R-8 and R-12 through R-18 and bars outright in its neighbourhood business, community business and office zones. The Auburn finding is the one worth repeating. Auburn's zoning code establishes exactly seven residential zones: RC, R-1 through R-4, R-F and R-NM. Its published zoning map still labels roughly a quarter of residential land with codes the code no longer establishes at all — R-5, R-7, R-10, R-20 and others, survivors of a renumbering. We checked: those codes appear nowhere in ACC 18.07. So the checker will tell an Auburn owner on one of those parcels that it cannot confirm their zone permits an ADU, rather than quietly mapping an obsolete label onto a current one. That is the third city in this ledger where the map and the code disagree, after Seattle's collapsed neighbourhood-residential subzones and Bothell's county records still carrying lot-size codes the city retired. Shoreline is deliberately still absent. Its zoning layer returns current codes and agreed with county records on every parcel we sampled, but the city's own description of that layer calls it an unofficial reference including amendments only through April 2015. A publisher disclaiming their own data outranks our sampling of it.