Triage US residential real-property assessment review or appeal requests and prepare evidence packets when market value is a material ground. From an address and notice value, separates market, appraised, assessed, equalized, and taxable values; verifies jurisdiction-specific rules and valuation dates; analyzes comparable sales with APNs, stable transaction IDs, and contrary evidence; estimates a supportable requested value; and produces upload-ready English Markdown and PDF. Use for market-value informal reviews, decline-in-value or Proposition 8 requests, protests, grievances, abatements, comparable-sales packages, and defensible reduced-value estimates. Also use to identify the current authority, form, and deadline for unequal or non-uniform appraisal, exemption, classification, ownership, special valuation, or another non-market ground, but stop before comparable-sale valuation or packet generation for those grounds.