{
  "address": "3666 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3666/",
  "apn": "3605020",
  "block": "3605",
  "lot": "020",
  "eas_baseid": "362091",
  "coordinates": {
    "lat": 37.756648,
    "lng": -122.429375
  },
  "parcel": {
    "year_built": 1927,
    "units": 1,
    "stories": 2,
    "rooms": 7,
    "bathrooms": 1,
    "lot_area_sqft": 5697,
    "building_area_sqft": 2880,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-1",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 3666 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 54623,
    "assessed_improvement_value": 72839
  },
  "historic_status": {
    "ceqa_status_code": "B",
    "ceqa_status_code_article_10_11": "B",
    "ceqa_status_label": "Unevaluated",
    "reason": "No evaluation and 45 years or older",
    "yearbuilt": "1927",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "9322202",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1993-12-20",
      "status_date": "1994-03-16",
      "estimated_cost": 1500,
      "description": "repl broken bricks on front stairs",
      "source": "sf-building-permits"
    },
    {
      "number": "9103505",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1991-03-06",
      "status_date": "1991-04-24",
      "estimated_cost": 3500,
      "description": "replace (e) concrete retaining wall",
      "source": "sf-building-permits"
    },
    {
      "number": "9024155",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1990-11-21",
      "status_date": "1992-01-28",
      "estimated_cost": 1500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8711950",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1987-08-21",
      "status_date": "1988-04-06",
      "estimated_cost": 2000,
      "description": "horizontal extension",
      "source": "sf-building-permits"
    }
  ],
  "sources": [
    {
      "id": "sf-eas-addresses",
      "name": "SF Enterprise Addressing System via DataSF",
      "query": "https://data.sfgov.org/resource/3mea-di5p.json?street_name=21ST&street_type=ST&address_number=3666",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-assessor-roll",
      "name": "SF Office of the Assessor-Recorder via DataSF (2025 secured roll)",
      "query": "https://data.sfgov.org/resource/wv5m-vpq2.json?parcel_number=3605020&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3605&lot=020",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3605020",
      "retrieved": "2026-07-28"
    },
    {
      "id": "digitalsf-54808",
      "name": "3666 21st Street, between 1946 and 1951. San Francisco Office of Assessor-Recorder Photographs (SFP 23), San Francisco History Center, San Francisco Public Library.",
      "query": "https://digitalsf.org/record/54808",
      "label": "Assessor-Recorder Photographs (SFP 23), San Francisco Public Library",
      "retrieved": "2026-08-15"
    }
  ],
  "historical_record": [
    {
      "date": "between 1946 and 1951",
      "kind": "photograph",
      "description": "The Office of the Assessor-Recorder photographed the property for tax assessment.",
      "source": "digitalsf-54808"
    }
  ]
}