{
  "schemaVersion": "market-statistics-v1",
  "asOf": "2026-09-26",
  "source": {
    "dataset": "当サイト公開カタログ（PublicOffice投影）",
    "files": "src/data/source/offices.current.*.json",
    "rebuild": "npm run stats:build",
    "note": "公式サイト等で確認した掲載時点の税込表示価格。月額以外の周期は掲載しない。キャンペーン価格・紹介コード価格は含まない。"
  },
  "definitions": {
    "units": {
      "brand": "運営ブランド単位。多拠点チェーンの過大加重を避ける比較に使う",
      "office": "拠点単位。地域の供給数と、各拠点の最安月額の分布に使う",
      "plan": "料金プラン単位。選択肢の分布に使う"
    },
    "exclusions": [
      "月額が数値で確認できないプラン（要問い合わせ等）は価格統計から除外し、除外件数を明示する",
      "不明値を0円・非対応へ置換しない",
      "登記可能プラン統計は registration=true のプランに限定する"
    ],
    "rounding": "中央値・四分位・平均は円単位へ四捨五入。構成比は0.1%単位",
    "regionalQuality": "n>=10: normal、5〜9: reference（参考値）、5未満: insufficient（統計値非公開）",
    "rankingDeduplication": "価格ランキングは1ブランド1プラン（ブランド内最安のみ）。同額はブランドID昇順"
  },
  "snapshot": {
    "brandCount": 304,
    "officeCount": 969,
    "planCount": 2083,
    "prefectureCount": 47,
    "numericMonthlyPlanCount": 1670,
    "registrationStatus": {
      "known": 948,
      "available": 930,
      "unavailable": 18,
      "unknown": 21
    },
    "mailFrequencyKnownOfficeCount": 657
  },
  "monthlyPrice": {
    "plan": {
      "basis": "全料金プランのうち月額を数値で確認できたもの（Plan単位・用途混在）",
      "denominator": 2083,
      "excludedNonNumeric": 413,
      "n": 1670,
      "minimum": 270,
      "p25": 3388,
      "median": 7700,
      "p75": 13200,
      "maximum": 73700,
      "mean": 10026,
      "bands": [
        {
          "key": "under-1000",
          "label": "1,000円未満",
          "count": 105,
          "sharePercent": 6.3
        },
        {
          "key": "1000-2999",
          "label": "1,000〜2,999円",
          "count": 240,
          "sharePercent": 14.4
        },
        {
          "key": "3000-4999",
          "label": "3,000〜4,999円",
          "count": 217,
          "sharePercent": 13
        },
        {
          "key": "5000-9999",
          "label": "5,000〜9,999円",
          "count": 482,
          "sharePercent": 28.9
        },
        {
          "key": "10000-19999",
          "label": "10,000〜19,999円",
          "count": 466,
          "sharePercent": 27.9
        },
        {
          "key": "20000-49999",
          "label": "20,000〜49,999円",
          "count": 135,
          "sharePercent": 8.1
        },
        {
          "key": "50000-plus",
          "label": "50,000円以上",
          "count": 25,
          "sharePercent": 1.5
        }
      ]
    },
    "brandCheapest": {
      "basis": "各ブランドの最安数値月額（Brand単位・1ブランド1値）",
      "denominator": 304,
      "excludedBrandsWithoutNumericPlan": 11,
      "n": 293,
      "minimum": 270,
      "p25": 3300,
      "median": 5500,
      "p75": 9680,
      "maximum": 40700,
      "mean": 7090,
      "bands": [
        {
          "key": "under-1000",
          "label": "1,000円未満",
          "count": 22,
          "sharePercent": 7.5
        },
        {
          "key": "1000-2999",
          "label": "1,000〜2,999円",
          "count": 30,
          "sharePercent": 10.2
        },
        {
          "key": "3000-4999",
          "label": "3,000〜4,999円",
          "count": 60,
          "sharePercent": 20.5
        },
        {
          "key": "5000-9999",
          "label": "5,000〜9,999円",
          "count": 115,
          "sharePercent": 39.2
        },
        {
          "key": "10000-19999",
          "label": "10,000〜19,999円",
          "count": 53,
          "sharePercent": 18.1
        },
        {
          "key": "20000-49999",
          "label": "20,000〜49,999円",
          "count": 13,
          "sharePercent": 4.4
        },
        {
          "key": "50000-plus",
          "label": "50,000円以上",
          "count": 0,
          "sharePercent": 0
        }
      ]
    },
    "officeCheapest": {
      "basis": "各拠点の最安数値月額（Office単位・1拠点1値）",
      "denominator": 969,
      "excludedOfficesWithoutNumericPlan": 49,
      "n": 920,
      "minimum": 270,
      "p25": 3300,
      "median": 5500,
      "p75": 11000,
      "maximum": 40700,
      "mean": 8123,
      "bands": [
        {
          "key": "under-1000",
          "label": "1,000円未満",
          "count": 95,
          "sharePercent": 10.3
        },
        {
          "key": "1000-2999",
          "label": "1,000〜2,999円",
          "count": 106,
          "sharePercent": 11.5
        },
        {
          "key": "3000-4999",
          "label": "3,000〜4,999円",
          "count": 144,
          "sharePercent": 15.7
        },
        {
          "key": "5000-9999",
          "label": "5,000〜9,999円",
          "count": 299,
          "sharePercent": 32.5
        },
        {
          "key": "10000-19999",
          "label": "10,000〜19,999円",
          "count": 214,
          "sharePercent": 23.3
        },
        {
          "key": "20000-49999",
          "label": "20,000〜49,999円",
          "count": 62,
          "sharePercent": 6.7
        },
        {
          "key": "50000-plus",
          "label": "50,000円以上",
          "count": 0,
          "sharePercent": 0
        }
      ]
    }
  },
  "registrationMonthlyPrice": {
    "plan": {
      "basis": "法人登記可能（registration=true）かつ月額を数値で確認できたプラン",
      "denominator": 1825,
      "excludedNonNumeric": 410,
      "n": 1415,
      "minimum": 500,
      "p25": 4208,
      "median": 8800,
      "p75": 14613,
      "maximum": 73700,
      "mean": 10853,
      "bands": [
        {
          "key": "under-1000",
          "label": "1,000円未満",
          "count": 26,
          "sharePercent": 1.8
        },
        {
          "key": "1000-2999",
          "label": "1,000〜2,999円",
          "count": 217,
          "sharePercent": 15.3
        },
        {
          "key": "3000-4999",
          "label": "3,000〜4,999円",
          "count": 183,
          "sharePercent": 12.9
        },
        {
          "key": "5000-9999",
          "label": "5,000〜9,999円",
          "count": 414,
          "sharePercent": 29.3
        },
        {
          "key": "10000-19999",
          "label": "10,000〜19,999円",
          "count": 427,
          "sharePercent": 30.2
        },
        {
          "key": "20000-49999",
          "label": "20,000〜49,999円",
          "count": 123,
          "sharePercent": 8.7
        },
        {
          "key": "50000-plus",
          "label": "50,000円以上",
          "count": 25,
          "sharePercent": 1.8
        }
      ]
    },
    "brandCheapest": {
      "basis": "各ブランドの登記可能プラン最安数値月額（Brand単位・1ブランド1値）",
      "denominator": 304,
      "excludedBrandsWithoutNumericPlan": 31,
      "n": 273,
      "minimum": 500,
      "p25": 4400,
      "median": 6600,
      "p75": 11000,
      "maximum": 40700,
      "mean": 8188,
      "bands": [
        {
          "key": "under-1000",
          "label": "1,000円未満",
          "count": 13,
          "sharePercent": 4.8
        },
        {
          "key": "1000-2999",
          "label": "1,000〜2,999円",
          "count": 25,
          "sharePercent": 9.2
        },
        {
          "key": "3000-4999",
          "label": "3,000〜4,999円",
          "count": 45,
          "sharePercent": 16.5
        },
        {
          "key": "5000-9999",
          "label": "5,000〜9,999円",
          "count": 113,
          "sharePercent": 41.4
        },
        {
          "key": "10000-19999",
          "label": "10,000〜19,999円",
          "count": 62,
          "sharePercent": 22.7
        },
        {
          "key": "20000-49999",
          "label": "20,000〜49,999円",
          "count": 15,
          "sharePercent": 5.5
        },
        {
          "key": "50000-plus",
          "label": "50,000円以上",
          "count": 0,
          "sharePercent": 0
        }
      ]
    },
    "officeCheapest": {
      "basis": "各拠点の登記可能プラン最安数値月額（Office単位・1拠点1値）",
      "denominator": 969,
      "excludedOfficesWithoutNumericPlan": 88,
      "n": 881,
      "minimum": 500,
      "p25": 3850,
      "median": 5500,
      "p75": 11440,
      "maximum": 40700,
      "mean": 8687,
      "bands": [
        {
          "key": "under-1000",
          "label": "1,000円未満",
          "count": 26,
          "sharePercent": 3
        },
        {
          "key": "1000-2999",
          "label": "1,000〜2,999円",
          "count": 147,
          "sharePercent": 16.7
        },
        {
          "key": "3000-4999",
          "label": "3,000〜4,999円",
          "count": 136,
          "sharePercent": 15.4
        },
        {
          "key": "5000-9999",
          "label": "5,000〜9,999円",
          "count": 290,
          "sharePercent": 32.9
        },
        {
          "key": "10000-19999",
          "label": "10,000〜19,999円",
          "count": 218,
          "sharePercent": 24.7
        },
        {
          "key": "20000-49999",
          "label": "20,000〜49,999円",
          "count": 64,
          "sharePercent": 7.3
        },
        {
          "key": "50000-plus",
          "label": "50,000円以上",
          "count": 0,
          "sharePercent": 0
        }
      ]
    }
  },
  "prefectures": [
    {
      "prefecture": "東京都",
      "prefectureSlug": "tokyo",
      "officeCount": 311,
      "brandCount": 44,
      "registrationAvailableOfficeCount": 307,
      "monthly": {
        "n": 595,
        "quality": "normal",
        "minimum": 270,
        "p25": 2541,
        "median": 5500,
        "p75": 14300,
        "maximum": 73700,
        "mean": 10283
      }
    },
    {
      "prefecture": "大阪府",
      "prefectureSlug": "osaka",
      "officeCount": 106,
      "brandCount": 62,
      "registrationAvailableOfficeCount": 101,
      "monthly": {
        "n": 202,
        "quality": "normal",
        "minimum": 330,
        "p25": 4208,
        "median": 8228,
        "p75": 15375,
        "maximum": 62700,
        "mean": 11315
      }
    },
    {
      "prefecture": "神奈川県",
      "prefectureSlug": "kanagawa",
      "officeCount": 89,
      "brandCount": 41,
      "registrationAvailableOfficeCount": 87,
      "monthly": {
        "n": 133,
        "quality": "normal",
        "minimum": 550,
        "p25": 2500,
        "median": 5500,
        "p75": 11000,
        "maximum": 58960,
        "mean": 8176
      }
    },
    {
      "prefecture": "愛知県",
      "prefectureSlug": "aichi",
      "officeCount": 66,
      "brandCount": 32,
      "registrationAvailableOfficeCount": 62,
      "monthly": {
        "n": 104,
        "quality": "normal",
        "minimum": 330,
        "p25": 3203,
        "median": 7964,
        "p75": 14920,
        "maximum": 62700,
        "mean": 10693
      }
    },
    {
      "prefecture": "福岡県",
      "prefectureSlug": "fukuoka",
      "officeCount": 48,
      "brandCount": 30,
      "registrationAvailableOfficeCount": 47,
      "monthly": {
        "n": 78,
        "quality": "normal",
        "minimum": 660,
        "p25": 4538,
        "median": 9790,
        "p75": 16500,
        "maximum": 41360,
        "mean": 11655
      }
    },
    {
      "prefecture": "兵庫県",
      "prefectureSlug": "hyogo",
      "officeCount": 33,
      "brandCount": 28,
      "registrationAvailableOfficeCount": 31,
      "monthly": {
        "n": 71,
        "quality": "normal",
        "minimum": 660,
        "p25": 4104,
        "median": 6800,
        "p75": 10150,
        "maximum": 43780,
        "mean": 8336
      }
    },
    {
      "prefecture": "京都府",
      "prefectureSlug": "kyoto",
      "officeCount": 28,
      "brandCount": 24,
      "registrationAvailableOfficeCount": 26,
      "monthly": {
        "n": 54,
        "quality": "normal",
        "minimum": 550,
        "p25": 3438,
        "median": 5500,
        "p75": 12925,
        "maximum": 33000,
        "mean": 9236
      }
    },
    {
      "prefecture": "沖縄県",
      "prefectureSlug": "okinawa",
      "officeCount": 23,
      "brandCount": 18,
      "registrationAvailableOfficeCount": 22,
      "monthly": {
        "n": 31,
        "quality": "normal",
        "minimum": 328,
        "p25": 5250,
        "median": 8800,
        "p75": 12100,
        "maximum": 23100,
        "mean": 9287
      }
    },
    {
      "prefecture": "千葉県",
      "prefectureSlug": "chiba",
      "officeCount": 17,
      "brandCount": 12,
      "registrationAvailableOfficeCount": 13,
      "monthly": {
        "n": 28,
        "quality": "normal",
        "minimum": 2200,
        "p25": 5913,
        "median": 9400,
        "p75": 11000,
        "maximum": 27500,
        "mean": 10263
      }
    },
    {
      "prefecture": "埼玉県",
      "prefectureSlug": "saitama",
      "officeCount": 17,
      "brandCount": 12,
      "registrationAvailableOfficeCount": 16,
      "monthly": {
        "n": 32,
        "quality": "normal",
        "minimum": 770,
        "p25": 4180,
        "median": 8300,
        "p75": 11500,
        "maximum": 20600,
        "mean": 8851
      }
    },
    {
      "prefecture": "広島県",
      "prefectureSlug": "hiroshima",
      "officeCount": 16,
      "brandCount": 13,
      "registrationAvailableOfficeCount": 15,
      "monthly": {
        "n": 23,
        "quality": "normal",
        "minimum": 880,
        "p25": 5500,
        "median": 9790,
        "p75": 15500,
        "maximum": 33000,
        "mean": 11112
      }
    },
    {
      "prefecture": "北海道",
      "prefectureSlug": "hokkaido",
      "officeCount": 13,
      "brandCount": 9,
      "registrationAvailableOfficeCount": 12,
      "monthly": {
        "n": 32,
        "quality": "normal",
        "minimum": 328,
        "p25": 4648,
        "median": 9350,
        "p75": 11500,
        "maximum": 20600,
        "mean": 8492
      }
    },
    {
      "prefecture": "静岡県",
      "prefectureSlug": "shizuoka",
      "officeCount": 12,
      "brandCount": 9,
      "registrationAvailableOfficeCount": 11,
      "monthly": {
        "n": 19,
        "quality": "normal",
        "minimum": 5000,
        "p25": 8000,
        "median": 9900,
        "p75": 12550,
        "maximum": 33000,
        "mean": 12250
      }
    },
    {
      "prefecture": "群馬県",
      "prefectureSlug": "gunma",
      "officeCount": 11,
      "brandCount": 8,
      "registrationAvailableOfficeCount": 10,
      "monthly": {
        "n": 12,
        "quality": "normal",
        "minimum": 3000,
        "p25": 3850,
        "median": 4125,
        "p75": 4963,
        "maximum": 11900,
        "mean": 4913
      }
    },
    {
      "prefecture": "宮城県",
      "prefectureSlug": "miyagi",
      "officeCount": 11,
      "brandCount": 10,
      "registrationAvailableOfficeCount": 10,
      "monthly": {
        "n": 20,
        "quality": "normal",
        "minimum": 660,
        "p25": 8993,
        "median": 11450,
        "p75": 14945,
        "maximum": 33000,
        "mean": 11992
      }
    },
    {
      "prefecture": "栃木県",
      "prefectureSlug": "tochigi",
      "officeCount": 11,
      "brandCount": 8,
      "registrationAvailableOfficeCount": 11,
      "monthly": {
        "n": 14,
        "quality": "normal",
        "minimum": 3000,
        "p25": 6600,
        "median": 10450,
        "p75": 14300,
        "maximum": 22000,
        "mean": 10686
      }
    },
    {
      "prefecture": "茨城県",
      "prefectureSlug": "ibaraki",
      "officeCount": 10,
      "brandCount": 8,
      "registrationAvailableOfficeCount": 10,
      "monthly": {
        "n": 15,
        "quality": "normal",
        "minimum": 4400,
        "p25": 5750,
        "median": 8800,
        "p75": 11000,
        "maximum": 16500,
        "mean": 8900
      }
    },
    {
      "prefecture": "三重県",
      "prefectureSlug": "mie",
      "officeCount": 10,
      "brandCount": 8,
      "registrationAvailableOfficeCount": 9,
      "monthly": {
        "n": 18,
        "quality": "normal",
        "minimum": 1980,
        "p25": 4585,
        "median": 6050,
        "p75": 11000,
        "maximum": 21450,
        "mean": 8473
      }
    },
    {
      "prefecture": "新潟県",
      "prefectureSlug": "niigata",
      "officeCount": 10,
      "brandCount": 10,
      "registrationAvailableOfficeCount": 9,
      "monthly": {
        "n": 17,
        "quality": "normal",
        "minimum": 3300,
        "p25": 6600,
        "median": 8900,
        "p75": 11000,
        "maximum": 16500,
        "mean": 9162
      }
    },
    {
      "prefecture": "岡山県",
      "prefectureSlug": "okayama",
      "officeCount": 9,
      "brandCount": 7,
      "registrationAvailableOfficeCount": 9,
      "monthly": {
        "n": 15,
        "quality": "normal",
        "minimum": 5280,
        "p25": 6050,
        "median": 9790,
        "p75": 12500,
        "maximum": 16500,
        "mean": 9990
      }
    },
    {
      "prefecture": "岐阜県",
      "prefectureSlug": "gifu",
      "officeCount": 8,
      "brandCount": 6,
      "registrationAvailableOfficeCount": 7,
      "monthly": {
        "n": 10,
        "quality": "normal",
        "minimum": 1080,
        "p25": 3503,
        "median": 4700,
        "p75": 5370,
        "maximum": 16280,
        "mean": 5586
      }
    },
    {
      "prefecture": "愛媛県",
      "prefectureSlug": "ehime",
      "officeCount": 7,
      "brandCount": 7,
      "registrationAvailableOfficeCount": 6,
      "monthly": {
        "n": 8,
        "quality": "reference",
        "minimum": 2000,
        "p25": 5700,
        "median": 8925,
        "p75": 14185,
        "maximum": 14850,
        "mean": 9135
      }
    },
    {
      "prefecture": "熊本県",
      "prefectureSlug": "kumamoto",
      "officeCount": 7,
      "brandCount": 6,
      "registrationAvailableOfficeCount": 7,
      "monthly": {
        "n": 9,
        "quality": "reference",
        "minimum": 5280,
        "p25": 11000,
        "median": 13500,
        "p75": 16500,
        "maximum": 19800,
        "mean": 13394
      }
    },
    {
      "prefecture": "大分県",
      "prefectureSlug": "oita",
      "officeCount": 7,
      "brandCount": 7,
      "registrationAvailableOfficeCount": 7,
      "monthly": {
        "n": 10,
        "quality": "normal",
        "minimum": 500,
        "p25": 3850,
        "median": 6300,
        "p75": 8725,
        "maximum": 15000,
        "mean": 7160
      }
    },
    {
      "prefecture": "富山県",
      "prefectureSlug": "toyama",
      "officeCount": 7,
      "brandCount": 6,
      "registrationAvailableOfficeCount": 6,
      "monthly": {
        "n": 8,
        "quality": "reference",
        "minimum": 3300,
        "p25": 4823,
        "median": 8250,
        "p75": 12125,
        "maximum": 16500,
        "mean": 8786
      }
    },
    {
      "prefecture": "福井県",
      "prefectureSlug": "fukui",
      "officeCount": 6,
      "brandCount": 4,
      "registrationAvailableOfficeCount": 6,
      "monthly": {
        "n": 6,
        "quality": "reference",
        "minimum": 7700,
        "p25": 11000,
        "median": 13000,
        "p75": 15000,
        "maximum": 15000,
        "mean": 12450
      }
    },
    {
      "prefecture": "福島県",
      "prefectureSlug": "fukushima",
      "officeCount": 6,
      "brandCount": 6,
      "registrationAvailableOfficeCount": 6,
      "monthly": {
        "n": 8,
        "quality": "reference",
        "minimum": 4290,
        "p25": 6325,
        "median": 8300,
        "p75": 11475,
        "maximum": 16500,
        "mean": 9199
      }
    },
    {
      "prefecture": "宮崎県",
      "prefectureSlug": "miyazaki",
      "officeCount": 6,
      "brandCount": 6,
      "registrationAvailableOfficeCount": 6,
      "monthly": {
        "n": 7,
        "quality": "reference",
        "minimum": 4290,
        "p25": 4925,
        "median": 5500,
        "p75": 8525,
        "maximum": 10500,
        "mean": 6741
      }
    },
    {
      "prefecture": "石川県",
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}