About

Chicago Value Map is a solo-operator tool made public (beta opened 2026-07). It exists because its operator underwrites 2–4 unit buildings in Cook County, IL, and wanted one system where every number carries a version stamp and can be graded against realized sales. Lake County currently has area context only; property valuation there is suppressed. The thesis is depth over breadth: assessor sales records, triennial reassessment shocks, SAFMR voucher gaps and 311 flood clusters fused with evidence-gated underwriting. Current error and suppression are published together on the accuracy page. There is no sales team or guaranteed support desk; beta feedback uses the channels listed in the app.