The arithmetic behind the pages, open on the table.
This is the model behind the figures on our pages about Duvall's 2026 zoning rewrite: the state's income-band test, the homes built since 2019, the rent limits the city's draft chapters would set, what a new apartment costs to build here, what each affordability tool buys per public dollar, and a sketch of the morning traffic and parking the capacity showing would add. Every input sits on its own line with a tag saying what kind of number it is (a published record, a standard rate, our own assumption, or a number nobody publishes) and where it comes from.
Open the spreadsheet in LibreOffice, Excel, Google Sheets or Numbers. Yellow cells are inputs; blue cells are results, each with a note giving the figure our pages print. Change a yellow cell and every result recomputes. If you think an assumption is wrong, change it and see what it does to the conclusion; that is the point of publishing it.
- duvall-model.ods The model as a spreadsheet, for LibreOffice (free). download
- duvall-model.xlsx The same spreadsheet, for Excel, Google Sheets and Numbers. download
- OUTPUT.txt The full report as plain text, including the feasibility tables and sensitivity runs the spreadsheet does not carry. read
- public-lands-duvall-2026-09-19.csv Our extract of King County's "publicly owned lands" layer inside Duvall, 144 parcels with owner, address and area, pulled September 19, 2026 (the article's source 40). download
- sr203-traffic-2026-09-21.csv Our extract of WSDOT's 2025 traffic counts for the six SR 203 sections through Duvall, pulled September 21, 2026 (the numbers page's source E). download
Working analysis by residents, not the position of any agency, and not legal, planning or financial advice. If a number is wrong, tell us through the form and we will correct it in public.