{
 "title": "Google review concentration in local home services markets",
 "collected_utc": "2026-08-24T10:19:42Z",
 "method": "DataForSEO Google Maps live/advanced, depth 100",
 "trades": [
  "roofing contractor",
  "hvac contractor",
  "plumber",
  "electrician",
  "landscaping company",
  "garage door repair"
 ],
 "cities": [
  "Phoenix, AZ",
  "Atlanta, GA",
  "Dallas, TX",
  "Chicago, IL",
  "Denver, CO",
  "Nashville, TN",
  "Portland, OR",
  "Kansas City, MO",
  "Boise, ID",
  "Des Moines, IA",
  "Chattanooga, TN",
  "Fort Wayne, IN"
 ],
 "markets": 72,
 "listings": 7072,
 "reviews": 2215490,
 "metric_definitions": {
  "visible_competitive_set": "The ranked listing set DataForSEO Maps returns for trade + city (depth 100). Not a census of city businesses.",
  "top5_share_t20": "Share of review volume held by the 5 most-reviewed listings, as a percentage of the top 20 most-reviewed listings' combined volume. Fixed denominator so markets with fewer returned listings stay comparable.",
  "top5_share_full": "Same numerator, denominator = all returned listings. Varies with n.",
  "gini": "0 = every listing has equal reviews, 1 = one listing holds all reviews.",
  "leader_to_median": "Most-reviewed listing divided by the median listing's review count."
 },
 "headline": {
  "review_leader_in_top3_pct": 5.6,
  "median_rank_of_review_leader": 35,
  "median_reviews_of_rank1_listing": 121,
  "median_reviews_of_review_leader": 4447,
  "median_spearman_rank_vs_reviews": 0.164,
  "median_top5_share_of_top20": 58.3,
  "median_leader_to_median_ratio": 107.1,
  "median_listing_reviews": 40.0
 },
 "by_trade": {
  "roofing contractor": {
   "top5_share": 48.0,
   "top3_share": 34.4,
   "gini": 0.3,
   "leader": 1135.5,
   "median": 40.0,
   "leader_to_median": 29.6
  },
  "hvac contractor": {
   "top5_share": 65.8,
   "top3_share": 49.7,
   "gini": 0.5,
   "leader": 9659.0,
   "median": 49.5,
   "leader_to_median": 328.5
  },
  "plumber": {
   "top5_share": 62.4,
   "top3_share": 46.3,
   "gini": 0.5,
   "leader": 9162.5,
   "median": 70.5,
   "leader_to_median": 129.9
  },
  "electrician": {
   "top5_share": 73.8,
   "top3_share": 58.3,
   "gini": 0.6,
   "leader": 8734.5,
   "median": 13.5,
   "leader_to_median": 634.5
  },
  "landscaping company": {
   "top5_share": 56.6,
   "top3_share": 44.7,
   "gini": 0.4,
   "leader": 1030.0,
   "median": 31.5,
   "leader_to_median": 34.1
  },
  "garage door repair": {
   "top5_share": 56.5,
   "top3_share": 41.5,
   "gini": 0.4,
   "leader": 3943.5,
   "median": 57.5,
   "leader_to_median": 76.0
  }
 },
 "by_metro_size": {
  "large": {
   "markets": 24,
   "median_top5_share_t20": 60.2,
   "median_gini_t20": 0.5,
   "median_leader_reviews": 4669.0,
   "median_median_reviews": 39.0,
   "median_leader_to_median": 127.3
  },
  "mid": {
   "markets": 24,
   "median_top5_share_t20": 57.8,
   "median_gini_t20": 0.4,
   "median_leader_reviews": 5373.0,
   "median_median_reviews": 53.0,
   "median_leader_to_median": 76.1
  },
  "small": {
   "markets": 24,
   "median_top5_share_t20": 58.9,
   "median_gini_t20": 0.5,
   "median_leader_reviews": 3483.5,
   "median_median_reviews": 31.5,
   "median_leader_to_median": 100.4
  }
 },
 "per_market": [
  {
   "trade": "electrician",
   "city": "Phoenix, AZ",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 53452,
   "top1_share_full": 65.0,
   "top3_share_full": 83.2,
   "top5_share_full": 88.5,
   "gini_full": 0.947,
   "top1_share_t20": 66.6,
   "top3_share_t20": 85.4,
   "top5_share_t20": 90.8,
   "gini_t20": 0.823,
   "leader_reviews": 34733,
   "median_reviews": 13,
   "p90_reviews": 300,
   "leader_to_median": 2572.8,
   "zero_review_listings": 8,
   "zero_review_pct": 8.0
  },
  {
   "trade": "electrician",
   "city": "Kansas City, MO",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 43841,
   "top1_share_full": 44.6,
   "top3_share_full": 73.3,
   "top5_share_full": 80.7,
   "gini_full": 0.915,
   "top1_share_t20": 47.0,
   "top3_share_t20": 77.1,
   "top5_share_t20": 84.9,
   "gini_t20": 0.744,
   "leader_reviews": 19572,
   "median_reviews": 27,
   "p90_reviews": 567,
   "leader_to_median": 711.7,
   "zero_review_listings": 8,
   "zero_review_pct": 8.0
  },
  {
   "trade": "hvac contractor",
   "city": "Chicago, IL",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 52079,
   "top1_share_full": 58.7,
   "top3_share_full": 70.2,
   "top5_share_full": 75.7,
   "gini_full": 0.893,
   "top1_share_t20": 64.2,
   "top3_share_t20": 76.7,
   "top5_share_t20": 82.7,
   "gini_t20": 0.744,
   "leader_reviews": 30581,
   "median_reviews": 44,
   "p90_reviews": 761,
   "leader_to_median": 695.0,
   "zero_review_listings": 6,
   "zero_review_pct": 6.0
  },
  {
   "trade": "electrician",
   "city": "Denver, CO",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 36992,
   "top1_share_full": 48.0,
   "top3_share_full": 67.4,
   "top5_share_full": 74.2,
   "gini_full": 0.884,
   "top1_share_t20": 52.3,
   "top3_share_t20": 73.4,
   "top5_share_t20": 80.8,
   "gini_t20": 0.693,
   "leader_reviews": 17752,
   "median_reviews": 28,
   "p90_reviews": 473,
   "leader_to_median": 634.0,
   "zero_review_listings": 1,
   "zero_review_pct": 1.0
  },
  {
   "trade": "electrician",
   "city": "Boise, ID",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 33693,
   "top1_share_full": 26.3,
   "top3_share_full": 56.1,
   "top5_share_full": 74.1,
   "gini_full": 0.906,
   "top1_share_t20": 27.4,
   "top3_share_t20": 58.5,
   "top5_share_t20": 77.2,
   "gini_t20": 0.663,
   "leader_reviews": 8869,
   "median_reviews": 13,
   "p90_reviews": 321,
   "leader_to_median": 657.0,
   "zero_review_listings": 8,
   "zero_review_pct": 8.0
  },
  {
   "trade": "electrician",
   "city": "Fort Wayne, IN",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 27464,
   "top1_share_full": 31.6,
   "top3_share_full": 55.8,
   "top5_share_full": 73.5,
   "gini_full": 0.908,
   "top1_share_t20": 32.9,
   "top3_share_t20": 58.1,
   "top5_share_t20": 76.5,
   "gini_t20": 0.657,
   "leader_reviews": 8683,
   "median_reviews": 7,
   "p90_reviews": 280,
   "leader_to_median": 1157.7,
   "zero_review_listings": 13,
   "zero_review_pct": 13.0
  },
  {
   "trade": "hvac contractor",
   "city": "Atlanta, GA",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 35281,
   "top1_share_full": 26.9,
   "top3_share_full": 52.6,
   "top5_share_full": 70.5,
   "gini_full": 0.879,
   "top1_share_t20": 29.1,
   "top3_share_t20": 56.9,
   "top5_share_t20": 76.2,
   "gini_t20": 0.614,
   "leader_reviews": 9477,
   "median_reviews": 24,
   "p90_reviews": 644,
   "leader_to_median": 386.8,
   "zero_review_listings": 18,
   "zero_review_pct": 18.0
  },
  {
   "trade": "hvac contractor",
   "city": "Phoenix, AZ",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 109140,
   "top1_share_full": 31.8,
   "top3_share_full": 55.4,
   "top5_share_full": 70.4,
   "gini_full": 0.887,
   "top1_share_t20": 33.9,
   "top3_share_t20": 58.9,
   "top5_share_t20": 74.9,
   "gini_t20": 0.621,
   "leader_reviews": 34733,
   "median_reviews": 55,
   "p90_reviews": 1824,
   "leader_to_median": 625.8,
   "zero_review_listings": 5,
   "zero_review_pct": 5.0
  },
  {
   "trade": "electrician",
   "city": "Nashville, TN",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 34121,
   "top1_share_full": 28.8,
   "top3_share_full": 59.3,
   "top5_share_full": 71.3,
   "gini_full": 0.901,
   "top1_share_t20": 30.1,
   "top3_share_t20": 61.8,
   "top5_share_t20": 74.3,
   "gini_t20": 0.635,
   "leader_reviews": 9841,
   "median_reviews": 15,
   "p90_reviews": 1006,
   "leader_to_median": 634.9,
   "zero_review_listings": 9,
   "zero_review_pct": 9.0
  },
  {
   "trade": "plumber",
   "city": "Dallas, TX",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 85779,
   "top1_share_full": 28.6,
   "top3_share_full": 59.0,
   "top5_share_full": 65.6,
   "gini_full": 0.853,
   "top1_share_t20": 32.4,
   "top3_share_t20": 66.7,
   "top5_share_t20": 74.2,
   "gini_t20": 0.601,
   "leader_reviews": 24538,
   "median_reviews": 83,
   "p90_reviews": 1405,
   "leader_to_median": 293.9,
   "zero_review_listings": 6,
   "zero_review_pct": 6.0
  },
  {
   "trade": "electrician",
   "city": "Des Moines, IA",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 27445,
   "top1_share_full": 32.0,
   "top3_share_full": 56.1,
   "top5_share_full": 69.8,
   "gini_full": 0.899,
   "top1_share_t20": 33.6,
   "top3_share_t20": 58.8,
   "top5_share_t20": 73.2,
   "gini_t20": 0.637,
   "leader_reviews": 8786,
   "median_reviews": 10,
   "p90_reviews": 560,
   "leader_to_median": 878.6,
   "zero_review_listings": 8,
   "zero_review_pct": 8.0
  },
  {
   "trade": "hvac contractor",
   "city": "Kansas City, MO",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 63657,
   "top1_share_full": 30.7,
   "top3_share_full": 56.0,
   "top5_share_full": 69.2,
   "gini_full": 0.896,
   "top1_share_t20": 32.4,
   "top3_share_t20": 59.0,
   "top5_share_t20": 72.9,
   "gini_t20": 0.621,
   "leader_reviews": 19572,
   "median_reviews": 20,
   "p90_reviews": 1440,
   "leader_to_median": 978.6,
   "zero_review_listings": 7,
   "zero_review_pct": 7.0
  },
  {
   "trade": "plumber",
   "city": "Phoenix, AZ",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 76127,
   "top1_share_full": 45.6,
   "top3_share_full": 55.9,
   "top5_share_full": 61.6,
   "gini_full": 0.832,
   "top1_share_t20": 53.0,
   "top3_share_t20": 65.0,
   "top5_share_t20": 71.6,
   "gini_t20": 0.598,
   "leader_reviews": 34733,
   "median_reviews": 122,
   "p90_reviews": 1504,
   "leader_to_median": 283.5,
   "zero_review_listings": 5,
   "zero_review_pct": 5.0
  },
  {
   "trade": "plumber",
   "city": "Chicago, IL",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 30291,
   "top1_share_full": 28.2,
   "top3_share_full": 48.2,
   "top5_share_full": 57.9,
   "gini_full": 0.788,
   "top1_share_t20": 34.5,
   "top3_share_t20": 59.0,
   "top5_share_t20": 70.8,
   "gini_t20": 0.567,
   "leader_reviews": 8544,
   "median_reviews": 72,
   "p90_reviews": 507,
   "leader_to_median": 118.7,
   "zero_review_listings": 6,
   "zero_review_pct": 6.0
  },
  {
   "trade": "landscaping company",
   "city": "Atlanta, GA",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 11745,
   "top1_share_full": 40.2,
   "top3_share_full": 47.7,
   "top5_share_full": 53.5,
   "gini_full": 0.744,
   "top1_share_t20": 52.7,
   "top3_share_t20": 62.4,
   "top5_share_t20": 70.0,
   "gini_t20": 0.584,
   "leader_reviews": 4727,
   "median_reviews": 38,
   "p90_reviews": 204,
   "leader_to_median": 124.4,
   "zero_review_listings": 4,
   "zero_review_pct": 4.0
  },
  {
   "trade": "garage door repair",
   "city": "Phoenix, AZ",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 47707,
   "top1_share_full": 27.8,
   "top3_share_full": 46.6,
   "top5_share_full": 57.6,
   "gini_full": 0.8,
   "top1_share_t20": 33.6,
   "top3_share_t20": 56.1,
   "top5_share_t20": 69.4,
   "gini_t20": 0.558,
   "leader_reviews": 13280,
   "median_reviews": 102,
   "p90_reviews": 949,
   "leader_to_median": 130.2,
   "zero_review_listings": 7,
   "zero_review_pct": 7.0
  },
  {
   "trade": "hvac contractor",
   "city": "Denver, CO",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 55161,
   "top1_share_full": 32.2,
   "top3_share_full": 46.6,
   "top5_share_full": 59.3,
   "gini_full": 0.829,
   "top1_share_t20": 37.1,
   "top3_share_t20": 53.7,
   "top5_share_t20": 68.3,
   "gini_t20": 0.568,
   "leader_reviews": 17752,
   "median_reviews": 89,
   "p90_reviews": 1357,
   "leader_to_median": 199.5,
   "zero_review_listings": 9,
   "zero_review_pct": 9.0
  },
  {
   "trade": "hvac contractor",
   "city": "Dallas, TX",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 67352,
   "top1_share_full": 36.4,
   "top3_share_full": 50.6,
   "top5_share_full": 59.9,
   "gini_full": 0.85,
   "top1_share_t20": 41.1,
   "top3_share_t20": 57.1,
   "top5_share_t20": 67.5,
   "gini_t20": 0.568,
   "leader_reviews": 24538,
   "median_reviews": 58,
   "p90_reviews": 1412,
   "leader_to_median": 423.1,
   "zero_review_listings": 10,
   "zero_review_pct": 10.0
  },
  {
   "trade": "garage door repair",
   "city": "Fort Wayne, IN",
   "metro_size": "small",
   "n_listings": 29,
   "total_reviews": 8929,
   "top1_share_full": 26.2,
   "top3_share_full": 49.7,
   "top5_share_full": 66.5,
   "gini_full": 0.683,
   "top1_share_t20": 26.3,
   "top3_share_t20": 49.8,
   "top5_share_t20": 66.7,
   "gini_t20": 0.545,
   "leader_reviews": 2338,
   "median_reviews": 122,
   "p90_reviews": 1182,
   "leader_to_median": 19.2,
   "zero_review_listings": 6,
   "zero_review_pct": 20.7
  },
  {
   "trade": "plumber",
   "city": "Des Moines, IA",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 54500,
   "top1_share_full": 17.4,
   "top3_share_full": 43.8,
   "top5_share_full": 59.9,
   "gini_full": 0.855,
   "top1_share_t20": 19.0,
   "top3_share_t20": 47.9,
   "top5_share_t20": 65.5,
   "gini_t20": 0.549,
   "leader_reviews": 9456,
   "median_reviews": 49,
   "p90_reviews": 952,
   "leader_to_median": 193.0,
   "zero_review_listings": 2,
   "zero_review_pct": 2.0
  },
  {
   "trade": "landscaping company",
   "city": "Boise, ID",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 7681,
   "top1_share_full": 27.4,
   "top3_share_full": 36.2,
   "top5_share_full": 43.8,
   "gini_full": 0.648,
   "top1_share_t20": 41.0,
   "top3_share_t20": 54.1,
   "top5_share_t20": 65.5,
   "gini_t20": 0.517,
   "leader_reviews": 2107,
   "median_reviews": 39,
   "p90_reviews": 121,
   "leader_to_median": 54.0,
   "zero_review_listings": 2,
   "zero_review_pct": 2.0
  },
  {
   "trade": "electrician",
   "city": "Portland, OR",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 19685,
   "top1_share_full": 31.7,
   "top3_share_full": 44.7,
   "top5_share_full": 54.3,
   "gini_full": 0.794,
   "top1_share_t20": 37.9,
   "top3_share_t20": 53.4,
   "top5_share_t20": 64.8,
   "gini_t20": 0.533,
   "leader_reviews": 6242,
   "median_reviews": 40,
   "p90_reviews": 429,
   "leader_to_median": 154.1,
   "zero_review_listings": 5,
   "zero_review_pct": 5.0
  },
  {
   "trade": "hvac contractor",
   "city": "Nashville, TN",
   "metro_size": "mid",
   "n_listings": 100,
   "total_reviews": 54563,
   "top1_share_full": 18.0,
   "top3_share_full": 40.5,
   "top5_share_full": 56.8,
   "gini_full": 0.831,
   "top1_share_t20": 20.3,
   "top3_share_t20": 45.7,
   "top5_share_t20": 64.1,
   "gini_t20": 0.48,
   "leader_reviews": 9841,
   "median_reviews": 55,
   "p90_reviews": 1438,
   "leader_to_median": 178.9,
   "zero_review_listings": 3,
   "zero_review_pct": 3.0
  },
  {
   "trade": "plumber",
   "city": "Boise, ID",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 44622,
   "top1_share_full": 19.9,
   "top3_share_full": 45.8,
   "top5_share_full": 54.4,
   "gini_full": 0.807,
   "top1_share_t20": 23.4,
   "top3_share_t20": 54.0,
   "top5_share_t20": 64.1,
   "gini_t20": 0.509,
   "leader_reviews": 8869,
   "median_reviews": 69,
   "p90_reviews": 1367,
   "leader_to_median": 127.6,
   "zero_review_listings": 7,
   "zero_review_pct": 7.0
  },
  {
   "trade": "electrician",
   "city": "Dallas, TX",
   "metro_size": "large",
   "n_listings": 100,
   "total_reviews": 13691,
   "top1_share_full": 24.4,
   "top3_share_full": 45.2,
   "top5_share_full": 58.4,
   "gini_full": 0.856,
   "top1_share_t20": 26.6,
   "top3_share_t20": 49.3,
   "top5_share_t20": 63.8,
   "gini_t20": 0.533,
   "leader_reviews": 3342,
   "median_reviews": 14,
   "p90_reviews": 402,
   "leader_to_median": 238.7,
   "zero_review_listings": 21,
   "zero_review_pct": 21.0
  },
  {
   "trade": "plumber",
   "city": "Chattanooga, TN",
   "metro_size": "small",
   "n_listings": 100,
   "total_reviews": 20779,
   "top1_share_full": 21.4,
   "top3_share_full": 41.6,
   "top5_share_full": 52.8,
   "gini_full": 0.794,
   "top1_share_t20": 25.6,
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