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document definitions, denominators, source construction, release clocks, reproducibility paths, and evidence gaps as first-class research outputs. a documented data gap is not evidence of competition or harm. screening thresholds are not legal conclusions, and reproducibility does not make unlike measures comparable. stable identifiers, machine-readable firm shares and ownership, local boundaries, historical revisions, disclosure status, methods documentation, and durable public apis. data publishers, analysts, students, reporters, agencies, and legislators ar-mm-2026-01 how hhi helps explain market concentration ar-dn-2026-01 where public market-share data runs out ar-dn-2026-02 housing competition needs local ownership data","connectionCount":5},{"id":"issue:housing-access","kind":"issue","label":"Housing access and local power","shortLabel":"Housing access","description":"Which local ownership, pricing, supply, and platform records can identify where renters face weakened competitive choice?","href":"/issues/housing-access-and-local-power","metricLabel":"Bounded markets","metricValue":"1","detail":"1 separately defined market / editorial research program","status":"issue program","year":2026,"color":"#c026d3","searchText":"housing access and local power housing access ownership, pricing systems, supply, and place the program joins national housing-access evidence to selected ownership and official-record context while keeping the underlying competition problem local. which local ownership, pricing, supply, and platform records can identify where renters face weakened competitive choice? 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