{
  "name": "AI Real Estate Agent Recommendation Concentration, 50 States and DC (2026)",
  "identifier": "TA-REALESTATE-AIREC-2026-v1",
  "version": "1.0",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "collected": "2026-08-11",
  "model_under_test": "gpt-5.4-mini, web search enabled",
  "authority_data": "Ahrefs, read on a single date",
  "demographics": "US Census ACS 5-year, 2023 vintage; coordinates from Census Gazetteer",
  "notes": [
    "ai_recommendation_hhi is the sum of squared percentage shares of AI recommendations within a controlled prompt set. It is NOT real-world transaction market share.",
    "One city per state: the largest city, selected by one uniform rule.",
    "median_domain_rating_top5 is empty where Ahrefs enrichment data does not exist for that state’s top five agents (31 of 51 states).",
    "Agent names are as returned by the model from cited sources; individual existence was not separately verified.",
    "Some agent names were recorded in the source report in a truncated form and are given here trimmed to the verified portion."
  ],
  "fields": {
    "state": "US state or federal district",
    "state_abbr": "Two-letter postal abbreviation",
    "city": "Largest city in the state, used as the test market",
    "distinct_agents_named": "Count of distinct canonical agent entities named across the prompt set",
    "ai_recommendation_hhi": "Herfindahl-Hirschman Index of AI recommendation shares (0-10000)",
    "top_agent_share_pct": "Share of recommendations held by the single most-recommended agent",
    "most_recommended_agent": "Canonical entity named most often",
    "median_domain_rating_top5": "Median Ahrefs Domain Rating across the top five agents, where enrichment exists"
  },
  "rows": [
    {
      "state": "Alabama",
      "state_abbr": "AL",
      "city": "Huntsville",
      "distinct_agents_named": 16,
      "ai_recommendation_hhi": 816,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Matt Curtis Real Estate Team",
      "median_domain_rating_top5": null
    },
    {
      "state": "Alaska",
      "state_abbr": "AK",
      "city": "Anchorage",
      "distinct_agents_named": 18,
      "ai_recommendation_hhi": 720,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Roy Briley Real Estate Group",
      "median_domain_rating_top5": null
    },
    {
      "state": "Arizona",
      "state_abbr": "AZ",
      "city": "Phoenix",
      "distinct_agents_named": 60,
      "ai_recommendation_hhi": 219,
      "top_agent_share_pct": 6.7,
      "most_recommended_agent": "The Brokery",
      "median_domain_rating_top5": 3.2
    },
    {
      "state": "Arkansas",
      "state_abbr": "AR",
      "city": "Little Rock",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 560,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Donna Carlson",
      "median_domain_rating_top5": null
    },
    {
      "state": "California",
      "state_abbr": "CA",
      "city": "Los Angeles",
      "distinct_agents_named": 258,
      "ai_recommendation_hhi": 61,
      "top_agent_share_pct": 3,
      "most_recommended_agent": "Janice Lee",
      "median_domain_rating_top5": 51.5
    },
    {
      "state": "Colorado",
      "state_abbr": "CO",
      "city": "Denver",
      "distinct_agents_named": 17,
      "ai_recommendation_hhi": 816,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Be1 Team @ Compass",
      "median_domain_rating_top5": null
    },
    {
      "state": "Connecticut",
      "state_abbr": "CT",
      "city": "Bridgeport",
      "distinct_agents_named": 17,
      "ai_recommendation_hhi": 816,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Rosana Melo",
      "median_domain_rating_top5": null
    },
    {
      "state": "Delaware",
      "state_abbr": "DE",
      "city": "Wilmington",
      "distinct_agents_named": 19,
      "ai_recommendation_hhi": 624,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Andrea Harrington",
      "median_domain_rating_top5": null
    },
    {
      "state": "District of Columbia",
      "state_abbr": "DC",
      "city": "Washington",
      "distinct_agents_named": 19,
      "ai_recommendation_hhi": 912,
      "top_agent_share_pct": 24,
      "most_recommended_agent": "Kimberly Cestari",
      "median_domain_rating_top5": 82
    },
    {
      "state": "Florida",
      "state_abbr": "FL",
      "city": "Jacksonville",
      "distinct_agents_named": 55,
      "ai_recommendation_hhi": 251,
      "top_agent_share_pct": 6.7,
      "most_recommended_agent": "Jennifer Hendry",
      "median_domain_rating_top5": null
    },
    {
      "state": "Georgia",
      "state_abbr": "GA",
      "city": "Atlanta",
      "distinct_agents_named": 18,
      "ai_recommendation_hhi": 752,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Debra Johnston",
      "median_domain_rating_top5": 19
    },
    {
      "state": "Hawaii",
      "state_abbr": "HI",
      "city": "Honolulu",
      "distinct_agents_named": 15,
      "ai_recommendation_hhi": 944,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Myron Kiriu",
      "median_domain_rating_top5": 10
    },
    {
      "state": "Idaho",
      "state_abbr": "ID",
      "city": "Boise",
      "distinct_agents_named": 18,
      "ai_recommendation_hhi": 720,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Sheila Smith",
      "median_domain_rating_top5": null
    },
    {
      "state": "Illinois",
      "state_abbr": "IL",
      "city": "Chicago",
      "distinct_agents_named": 54,
      "ai_recommendation_hhi": 279,
      "top_agent_share_pct": 9.3,
      "most_recommended_agent": "Matt Laricy",
      "median_domain_rating_top5": 28
    },
    {
      "state": "Indiana",
      "state_abbr": "IN",
      "city": "Indianapolis",
      "distinct_agents_named": 101,
      "ai_recommendation_hhi": 288,
      "top_agent_share_pct": 8.1,
      "most_recommended_agent": "Mick McMaken",
      "median_domain_rating_top5": 12
    },
    {
      "state": "Iowa",
      "state_abbr": "IA",
      "city": "Des Moines",
      "distinct_agents_named": 17,
      "ai_recommendation_hhi": 688,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Ethan Hokel",
      "median_domain_rating_top5": 38.5
    },
    {
      "state": "Kansas",
      "state_abbr": "KS",
      "city": "Wichita",
      "distinct_agents_named": 23,
      "ai_recommendation_hhi": 464,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Josh Roy",
      "median_domain_rating_top5": null
    },
    {
      "state": "Kentucky",
      "state_abbr": "KY",
      "city": "Louisville",
      "distinct_agents_named": 20,
      "ai_recommendation_hhi": 592,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Matthew Hoagland",
      "median_domain_rating_top5": null
    },
    {
      "state": "Louisiana",
      "state_abbr": "LA",
      "city": "New Orleans",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Kat Bosio",
      "median_domain_rating_top5": null
    },
    {
      "state": "Maine",
      "state_abbr": "ME",
      "city": "Portland",
      "distinct_agents_named": 19,
      "ai_recommendation_hhi": 624,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "David Marsden",
      "median_domain_rating_top5": null
    },
    {
      "state": "Maryland",
      "state_abbr": "MD",
      "city": "Baltimore",
      "distinct_agents_named": 23,
      "ai_recommendation_hhi": 464,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Melissa Cheetham",
      "median_domain_rating_top5": 81
    },
    {
      "state": "Massachusetts",
      "state_abbr": "MA",
      "city": "Boston",
      "distinct_agents_named": 23,
      "ai_recommendation_hhi": 464,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "The Goodrich Team",
      "median_domain_rating_top5": null
    },
    {
      "state": "Michigan",
      "state_abbr": "MI",
      "city": "Detroit",
      "distinct_agents_named": 69,
      "ai_recommendation_hhi": 277,
      "top_agent_share_pct": 7.6,
      "most_recommended_agent": "Jeff Glover",
      "median_domain_rating_top5": null
    },
    {
      "state": "Minnesota",
      "state_abbr": "MN",
      "city": "Minneapolis",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Kris Lindahl Real Estate",
      "median_domain_rating_top5": null
    },
    {
      "state": "Mississippi",
      "state_abbr": "MS",
      "city": "Jackson",
      "distinct_agents_named": 22,
      "ai_recommendation_hhi": 496,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Alicen Blanchard",
      "median_domain_rating_top5": 1.2
    },
    {
      "state": "Missouri",
      "state_abbr": "MO",
      "city": "Kansas City",
      "distinct_agents_named": 15,
      "ai_recommendation_hhi": 944,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Amber Rothermel Real Estate",
      "median_domain_rating_top5": null
    },
    {
      "state": "Montana",
      "state_abbr": "MT",
      "city": "Billings",
      "distinct_agents_named": 11,
      "ai_recommendation_hhi": 1232,
      "top_agent_share_pct": 20,
      "most_recommended_agent": "Sheila Larsen Team",
      "median_domain_rating_top5": null
    },
    {
      "state": "Nebraska",
      "state_abbr": "NE",
      "city": "Omaha",
      "distinct_agents_named": 17,
      "ai_recommendation_hhi": 752,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Tasha Moss",
      "median_domain_rating_top5": null
    },
    {
      "state": "Nevada",
      "state_abbr": "NV",
      "city": "Las Vegas",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Craig M. Tann",
      "median_domain_rating_top5": 43
    },
    {
      "state": "New Hampshire",
      "state_abbr": "NH",
      "city": "Manchester",
      "distinct_agents_named": 23,
      "ai_recommendation_hhi": 464,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Ashley Rioux",
      "median_domain_rating_top5": null
    },
    {
      "state": "New Jersey",
      "state_abbr": "NJ",
      "city": "Newark",
      "distinct_agents_named": 19,
      "ai_recommendation_hhi": 656,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Eyal Levy",
      "median_domain_rating_top5": null
    },
    {
      "state": "New Mexico",
      "state_abbr": "NM",
      "city": "Albuquerque",
      "distinct_agents_named": 22,
      "ai_recommendation_hhi": 496,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Jennifer Wilson",
      "median_domain_rating_top5": 3.7
    },
    {
      "state": "New York",
      "state_abbr": "NY",
      "city": "New York",
      "distinct_agents_named": 77,
      "ai_recommendation_hhi": 465,
      "top_agent_share_pct": 18,
      "most_recommended_agent": "Michelle Griffith",
      "median_domain_rating_top5": 78
    },
    {
      "state": "North Carolina",
      "state_abbr": "NC",
      "city": "Charlotte",
      "distinct_agents_named": 57,
      "ai_recommendation_hhi": 229,
      "top_agent_share_pct": 6.7,
      "most_recommended_agent": "Andy Bovender Team",
      "median_domain_rating_top5": null
    },
    {
      "state": "North Dakota",
      "state_abbr": "ND",
      "city": "Fargo",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 624,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "Thomas Clusiau",
      "median_domain_rating_top5": 1.5
    },
    {
      "state": "Ohio",
      "state_abbr": "OH",
      "city": "Columbus",
      "distinct_agents_named": 138,
      "ai_recommendation_hhi": 200,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Scott Oyler",
      "median_domain_rating_top5": 52
    },
    {
      "state": "Oklahoma",
      "state_abbr": "OK",
      "city": "Oklahoma City",
      "distinct_agents_named": 17,
      "ai_recommendation_hhi": 650,
      "top_agent_share_pct": 10,
      "most_recommended_agent": "Tara Levinson",
      "median_domain_rating_top5": null
    },
    {
      "state": "Oregon",
      "state_abbr": "OR",
      "city": "Portland",
      "distinct_agents_named": 22,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Drew Coleman",
      "median_domain_rating_top5": null
    },
    {
      "state": "Pennsylvania",
      "state_abbr": "PA",
      "city": "Philadelphia",
      "distinct_agents_named": 54,
      "ai_recommendation_hhi": 293,
      "top_agent_share_pct": 10.7,
      "most_recommended_agent": "Andy Oei",
      "median_domain_rating_top5": 50.5
    },
    {
      "state": "Rhode Island",
      "state_abbr": "RI",
      "city": "Providence",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Joseph Roch",
      "median_domain_rating_top5": null
    },
    {
      "state": "South Carolina",
      "state_abbr": "SC",
      "city": "Charleston",
      "distinct_agents_named": 22,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Dave Friedman Team",
      "median_domain_rating_top5": null
    },
    {
      "state": "South Dakota",
      "state_abbr": "SD",
      "city": "Sioux Falls",
      "distinct_agents_named": 18,
      "ai_recommendation_hhi": 688,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Amy Stockberger Real Estate",
      "median_domain_rating_top5": 43
    },
    {
      "state": "Tennessee",
      "state_abbr": "TN",
      "city": "Nashville",
      "distinct_agents_named": 22,
      "ai_recommendation_hhi": 496,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Gary Ashton",
      "median_domain_rating_top5": null
    },
    {
      "state": "Texas",
      "state_abbr": "TX",
      "city": "Houston",
      "distinct_agents_named": 234,
      "ai_recommendation_hhi": 53,
      "top_agent_share_pct": 1.7,
      "most_recommended_agent": "Eric Bramlett",
      "median_domain_rating_top5": 53
    },
    {
      "state": "Utah",
      "state_abbr": "UT",
      "city": "Salt Lake City",
      "distinct_agents_named": 17,
      "ai_recommendation_hhi": 720,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Joel Carson",
      "median_domain_rating_top5": 17
    },
    {
      "state": "Vermont",
      "state_abbr": "VT",
      "city": "Burlington",
      "distinct_agents_named": 18,
      "ai_recommendation_hhi": 720,
      "top_agent_share_pct": 16,
      "most_recommended_agent": "The Malley Group",
      "median_domain_rating_top5": null
    },
    {
      "state": "Virginia",
      "state_abbr": "VA",
      "city": "Virginia Beach",
      "distinct_agents_named": 23,
      "ai_recommendation_hhi": 464,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Brian Wurst",
      "median_domain_rating_top5": null
    },
    {
      "state": "Washington",
      "state_abbr": "WA",
      "city": "Seattle",
      "distinct_agents_named": 52,
      "ai_recommendation_hhi": 293,
      "top_agent_share_pct": 6.7,
      "most_recommended_agent": "Sean McConnell",
      "median_domain_rating_top5": null
    },
    {
      "state": "West Virginia",
      "state_abbr": "WV",
      "city": "Charleston",
      "distinct_agents_named": 9,
      "ai_recommendation_hhi": 1400,
      "top_agent_share_pct": 20,
      "most_recommended_agent": "Misty Harris",
      "median_domain_rating_top5": null
    },
    {
      "state": "Wisconsin",
      "state_abbr": "WI",
      "city": "Milwaukee",
      "distinct_agents_named": 21,
      "ai_recommendation_hhi": 528,
      "top_agent_share_pct": 8,
      "most_recommended_agent": "Jennifer Landro",
      "median_domain_rating_top5": 28
    },
    {
      "state": "Wyoming",
      "state_abbr": "WY",
      "city": "Cheyenne",
      "distinct_agents_named": 18,
      "ai_recommendation_hhi": 688,
      "top_agent_share_pct": 12,
      "most_recommended_agent": "Buck Wilson",
      "median_domain_rating_top5": null
    }
  ]
}