{
  "address": "3746–3748 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3746/",
  "apn": "3604019",
  "block": "3604",
  "lot": "019",
  "eas_baseid": "362019",
  "coordinates": {
    "lat": 37.756546,
    "lng": -122.431104
  },
  "address_range": "3746–3748",
  "street_numbers_on_parcel": [
    "3746",
    "3748"
  ],
  "parcel": {
    "year_built": 1909,
    "units": 1,
    "stories": 2,
    "rooms": 13,
    "bathrooms": 2,
    "lot_area_sqft": 8546,
    "building_area_sqft": 3915,
    "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": "3748 3746 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 117809,
    "assessed_improvement_value": 222821
  },
  "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": "1909",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201006214893",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2010-06-21",
      "status_date": "2010-06-21",
      "estimated_cost": 5890,
      "revised_cost": 5890,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200806033506",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2008-06-03",
      "status_date": "2008-06-03",
      "estimated_cost": 10290,
      "revised_cost": 10290,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9907241",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1999-04-15",
      "status_date": "2000-08-17",
      "estimated_cost": 50000,
      "description": "build a swimming pool",
      "source": "sf-building-permits"
    },
    {
      "number": "9502064",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1995-02-14",
      "status_date": "1995-04-26",
      "estimated_cost": 3800,
      "description": "horizontal",
      "source": "sf-building-permits"
    },
    {
      "number": "9319434",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1993-11-08",
      "status_date": "1994-01-21",
      "estimated_cost": 13000,
      "description": "structural improvement of existing foundation",
      "source": "sf-building-permits"
    },
    {
      "number": "8505249",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1985-05-21",
      "status_date": "1985-11-25",
      "estimated_cost": 4495,
      "description": "install solar panels on roof w/storage tank plumbing inside",
      "source": "sf-building-permits"
    },
    {
      "number": "8307028",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1983-07-22",
      "status_date": "1985-11-25",
      "estimated_cost": 13500,
      "description": "enclosure extension of existing sunporch,including wall",
      "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=3746",
      "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=3604019&$order=closed_roll_year%20DESC&$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=3604&lot=019",
      "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=3604019",
      "retrieved": "2026-07-28"
    }
  ]
}