What changed in the guide

September 24, 2026 — Source and responsibility disclosures

• Added a guide to checking our evidence and a field-by-field directory methodology.
• Added visible preparation and technical-review status beside article references.
• Aligned article authorship with the actual publisher and added cited-source relationships to article structured data.
• Removed the shared publication-date value from article markup: a common update date does not establish every article’s first publication date.
• Labeled older inspection and water-damage references as historical background.

September 24, 2026 — Evidence desk and deeper guidance

• Published the evidence desk for downloadable service-specific contractor question sheets.
• Added distinct worked examples to all 19 service manuals and three planning workshop sections to each of 11 guides.
• Expanded individually sourced city briefs from two to ten: Boston, Denver, Portland, Seattle, Tacoma, San Francisco, Los Angeles, Phoenix, Salt Lake City and Philadelphia.
• Added illustrative inspection-handover photography and clarified the new tool’s storage behavior.

September 24, 2026 — Specialist topics and local sources

Expanded the library to 19 service manuals, 11 guides and 11 problem guides. Published four clearly labeled illustrative scenarios, additional official resources and expanded policy pages. Added initial Boston and Denver source briefs.

September 23, 2026 — Homeowner field manual

Introduced the anatomy atlas, quote comparison workbench, chimney passport and directory coverage report alongside the first service manuals and homeowner guides. Added internal links, source notes and sitemap coverage for these resources.

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