{
  "address": "3726 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3726/",
  "apn": "3604018",
  "block": "3604",
  "lot": "018",
  "eas_baseid": "362017",
  "coordinates": {
    "lat": 37.756561,
    "lng": -122.430845
  },
  "parcel": {
    "year_built": 1914,
    "units": 1,
    "stories": 1,
    "rooms": 8,
    "bathrooms": 1,
    "lot_area_sqft": 2850,
    "building_area_sqft": 1557,
    "lot_depth_ft": 14,
    "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 3726 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 478491,
    "assessed_improvement_value": 191365,
    "last_sale_date": "1987-10-20"
  },
  "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": "1914",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202505216991",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-05-21",
      "status_date": "2025-08-22",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "remodel (e) kitchen on the 2/f. remove bearing wall between kitchen and dining room.",
      "source": "sf-building-permits"
    },
    {
      "number": "202504043788",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-04-04",
      "status_date": "2025-04-24",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "re-roofing: remove and replace roofing material / existing roofing material (in-kind)",
      "source": "sf-building-permits"
    },
    {
      "number": "9707465",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1997-04-25",
      "status_date": "1998-01-15",
      "estimated_cost": 9585,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9009417",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1990-05-16",
      "status_date": "1990-11-16",
      "estimated_cost": 4000,
      "description": "horizontal addition",
      "source": "sf-building-permits"
    },
    {
      "number": "8716454",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1987-11-16",
      "status_date": "1988-08-11",
      "estimated_cost": 7000,
      "description": "remodel kitchen, bath, minor repairs",
      "source": "sf-building-permits"
    },
    {
      "number": "8711000",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1987-08-04",
      "status_date": "1987-11-30",
      "estimated_cost": 2000,
      "description": "replace aluminum windows, repair stairs",
      "source": "sf-building-permits"
    },
    {
      "number": "8709658",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1987-07-09",
      "status_date": "1987-10-09",
      "estimated_cost": 2500,
      "description": "remove stucco & aluminum siding",
      "source": "sf-building-permits"
    },
    {
      "number": "8510170",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1985-09-20",
      "status_date": "1987-02-24",
      "estimated_cost": 9000,
      "description": "bring laundry room & deck into compliance",
      "source": "sf-building-permits"
    },
    {
      "number": "8300572",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1983-01-20",
      "status_date": "1987-02-24",
      "estimated_cost": 1500,
      "description": "repair bad wood, enclose porch, install windows",
      "source": "sf-building-permits"
    },
    {
      "number": "8200569",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1982-01-26",
      "status_date": "1983-03-04",
      "estimated_cost": 2000,
      "description": "bldg use: dwg",
      "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=3726",
      "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=3604018&$order=closed_roll_year%20DESC&$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=018",
      "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=3604018",
      "retrieved": "2026-07-28"
    }
  ]
}