{
  "address": "4421 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4421/",
  "apn": "2750041",
  "block": "2750",
  "lot": "041",
  "eas_baseid": "345481",
  "coordinates": {
    "lat": 37.757307,
    "lng": -122.437359
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 2,
    "rooms": 7,
    "bathrooms": 2,
    "bedrooms": 3,
    "lot_area_sqft": 2437.5,
    "building_area_sqft": 2051,
    "lot_depth_ft": 97.5,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 4421 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1207906,
    "assessed_improvement_value": 862121,
    "assessed_fixtures_value": 172,
    "last_sale_date": "2002-07-12"
  },
  "historic_status": {
    "ceqa_status_code": "B",
    "ceqa_status_code_article_10_11": "B",
    "ceqa_status_label": "Unevaluated",
    "reason": "Historic Survey Result and 45 years or older",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201909303078",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-09-30",
      "status_date": "2020-02-13",
      "estimated_cost": 19000,
      "revised_cost": 19000,
      "description": "inkind replacement of 10 wood dh with integral ogees and stained glass",
      "source": "sf-building-permits"
    },
    {
      "number": "M477127",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2014-04-04",
      "status_date": "2014-04-04",
      "revised_cost": 0,
      "description": "streetspace and sidewalk repair",
      "source": "sf-building-permits"
    },
    {
      "number": "200306137054",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2003-06-13",
      "status_date": "2004-02-05",
      "estimated_cost": 3000,
      "revised_cost": 5000,
      "description": "revision to previous permit #200211040650/excavate rear crawl space area for additonal storage space",
      "source": "sf-building-permits"
    },
    {
      "number": "200211040650",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2002-11-04",
      "status_date": "2004-02-05",
      "estimated_cost": 125000,
      "revised_cost": 125000,
      "description": "rebuild kitchen porch with deck above, add 2/fl bath, open 2 garage entrances, dormers to front,",
      "source": "sf-building-permits"
    },
    {
      "number": "9809785",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "1998-05-29",
      "status_date": "2002-04-04",
      "estimated_cost": 5000,
      "description": "kitchen & bathroom remodel,shower on deck",
      "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=20TH&street_type=ST&address_number=4421",
      "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=2750041&$order=closed_roll_year%20DESC&$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=2750&lot=041",
      "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=2750041",
      "retrieved": "2026-07-28"
    }
  ]
}