{"buyer_scenarios":[{"fit":"best_suited","scenario":"Projects requiring true divided lites, historic casing options, or wood exteriors."},{"fit":"best_suited","scenario":"Full-frame replacement scenarios where custom sizing and architectural support matter."},{"fit":"best_suited","scenario":"Retrofits where historic trim must remain undisturbed using sash-only or insert replacement."},{"fit":"best_suited","scenario":"Buyers who can work through a dealer, designer, and installer process rather than needing published online pricing."}],"citations":{"source_mix":{"company_owned":30,"independent":24,"unclear":3},"sources_referenced_by_questions":0,"support_mix":{"direct":25,"partial":10},"total_sources":57,"unique_domain_count":29},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Window Companies for Historic and Period Properties","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","google","grok","kimi","openai"],"predicate":"final_consensus_rank","qualifier":"historic window replacement","subject":"Marvin","unit":"rank","value":1},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","google","grok","kimi","openai"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Marvin","unit":"platforms","value":6},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-10-02","platform_support":["openai","grok","google"],"predicate":"fit_rating_count","qualifier":"strong","subject":"Marvin","unit":"platforms","value":3},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","perplexity","kimi"],"predicate":"fit_rating_count","qualifier":"good","subject":"Marvin","unit":"platforms","value":4}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":2.1666666666666665,"best_rank":1,"entity_id":"entity-001","entity_type":"company","final_rank":1,"name":"Marvin","platform_mentions":6,"platform_share":0.8571428571428571}],"identity":{"dataset_url":"https://homeimprovementconsensusindex.com/datasets/window-and-door-replacement/historic-window-replacement/marvin.json","page_url":"https://homeimprovementconsensusindex.com/window-and-door-replacement/historic-window-replacement/marvin","report_type":"fit_review","study_id":"HICI-STUDY-7667D8547F70","title":"Marvin Review for Historic and Period Properties"},"limitations":["Use the run researchdate as the study date. Platform-reported dates are provenance metadata and do not independently prove freshness.","All included platforms evaluated fit, but platformmentions counts only platforms that named the entity during ranking discovery.","Do not resolve conflicting product names, pricing, or capabilities by guessing; describe the conflict and tell buyers what to verify.","The supplied URLs were collected from platform responses and were not independently validated by the writer stage.","Company-owned citations materially outnumber independent citations; do not describe company claims as independently verified.","Platform-reported research dates differ from the authoritative run date; disclose this as a methodology limitation.","The deterministic identity audit contains qualification notes that must be disclosed where relevant.","Citations are platform-reported evidence, not independently verified facts. No-search model claims require explicit verification before being described as current facts."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Home Improvement Consensus Index cross-platform AI consensus analysis","platforms_included":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"platforms_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-10-02 16:24:47.491895+00","research_date":"2026-10-02","source_snapshot_sha256":"5747569cf4eff74eb7493d86f3056715dc209449b8bb3be7de9888b8838c1491","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":32,"qualified_finalists":10,"ranking_unit":"Window and door manufacturer, dealer, or installation company"},"schema_version":4,"summary":"Marvin is a strong fit for many historic window replacement projects, but not an automatic one. Six of the seven platforms that evaluated fit named Marvin during ranking discovery, and all seven rated it a good or strong fit for period properties. The strongest reason to consider it is its Historic Solutions program: Signature Ultimate wood and clad-wood windows with historic casing options, putty-glaze profiles, custom sizing, and Architectural Project Manager support for preservation submissions (, -3, google:marvin-historic). The main limitation is that Marvin is a replacement…","target_buyer":"An owner of a period or conservation-area property needing sightlines and profiles that satisfy preservation requirements.","topic":{"base_category":"Window and Door Replacement","category_criteria":["period profile matching","preservation approval support","restoration alternatives","product range and frame materials","energy performance ratings","installation quality","lead time","price transparency","product and labor warranty","customer review strength"],"geography":"United States","slug":"best-window-companies-for-historic-and-period-properties","title":"Best Window Companies for Historic and Period Properties","use_case":"historic window replacement"}}