{
  "query": {
    "country": "US",
    "town": "Washington, DC",
    "state": "DC",
    "property_type": "any",
    "months": 12
  },
  "status": "ok",
  "price": {
    "currency": "USD",
    "unit": "per sale",
    "value": 770000,
    "measure": "median",
    "median": 770000,
    "typical_low": 336200,
    "typical_high": 1896800,
    "min": 10000,
    "max": 21225000
  },
  "sample_size": 4893,
  "period": {
    "from": "2025-10-16",
    "to": "2026-10-15"
  },
  "confidence": "high",
  "price_type": "transaction",
  "as_of": "2026-10-24T11:04:29.343Z",
  "source": {
    "id": "us-dc-home-sales",
    "name": "Tax System Property Sales (CAMA): residential and condominium tables",
    "publisher": "District of Columbia, Office of the Chief Financial Officer (Office of Tax and Revenue), published on Open Data DC",
    "licence": "Creative Commons Attribution 4.0 (CC BY 4.0), as stated on the dataset record in the US federal data catalogue (publisher: Office of the Chief Financial Officer)",
    "licence_url": "https://catalog.data.gov/dataset/tax-system-property-sales-cama",
    "attribution": "Source: District of Columbia, Office of the Chief Financial Officer, Tax System Property Sales (CAMA), Open Data DC. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0). Figures are ProofPrice aggregates of the published sale records.",
    "url": "https://opendata.dc.gov/"
  },
  "method": "Median and 10th–90th percentile of qualified (arm's-length) sales of homes (houses, rowhouses and condos) in Washington, DC in the 12 months up to the latest recorded sale (2026-10-15), from the District's Computer-Assisted Mass Appraisal tables (Office of the Chief Financial Officer). Sales under $10,000 and unqualified sales (family transfers, forced sales and similar) are excluded. The tables keep each property's newest sale only. A sale of several units in one deal can repeat its price on each unit; the median and range are robust to this but not immune.",
  "method_url": "https://proofprice.com/method",
  "summary": "Homes (houses, rowhouses and condos) in Washington, DC sold for a median of US$770,000; 10th–90th percentile range US$336,200–US$1,896,800. Based on 4893 records from District of Columbia, Office of the Chief Financial Officer (Office of Tax and Revenue), published on Open Data DC (2025-10-16 to 2026-10-15). Confidence: high.",
  "notice": "Information, not a valuation or offer. Ranges describe past recorded prices.",
  "extra": {
    "area": "Washington, DC",
    "dataset": {
      "name": "Tax System Property Sales (CAMA): residential and condominium tables",
      "url": "https://catalog.data.gov/dataset/tax-system-property-sales-cama"
    },
    "window": {
      "months": 12,
      "from_exclusive": "2025-10-15",
      "to": "2026-10-15"
    },
    "dataset_latest_sale": "2026-10-15",
    "notes": [
      "Each DC table keeps the newest sale of every property, so a home sold twice inside the window counts once, at its newer price."
    ]
  },
  "answer_id": "ans_f2cec950a42ae3724e89",
  "method_version": "1",
  "retrieved_at": "2026-10-24T11:04:29.342Z",
  "evidence": {
    "type": "transaction",
    "label": "Recorded sale prices",
    "meaning": "Prices recorded in official records of completed sales: they show what others paid, not what a particular item is worth or what is on offer now."
  },
  "reliability": "record_level",
  "data_as_of": "2026-10-15",
  "data_age_days": 9,
  "suggestions": []
}