{
  "address": "4179 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4179/",
  "apn": "3603076",
  "block": "3603",
  "lot": "076",
  "eas_baseid": "361984",
  "coordinates": {
    "lat": 37.757476,
    "lng": -122.434121
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 1,
    "rooms": 7,
    "bathrooms": 3,
    "bedrooms": 3,
    "lot_area_sqft": 2848,
    "building_area_sqft": 2750,
    "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 4179 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1904953,
    "assessed_improvement_value": 816403,
    "last_sale_date": "2008-09-05"
  },
  "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": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201810254114",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-10-25",
      "status_date": "2019-02-01",
      "estimated_cost": 36000,
      "revised_cost": 36000,
      "description": "1/f: remodel kitchen including new cabinets, appliances,tile and countertops. no structural work, replace in-kind only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200804220311",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-04-22",
      "status_date": "2008-06-11",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "remove existing wall between (e) bedroom & study room. install one beam at attic space to support the (e) ceiling joists. remove/replace shower pan in kind. ref #200003295766 s1.",
      "source": "sf-building-permits"
    },
    {
      "number": "200107274725",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2001-07-27",
      "status_date": "2002-04-15",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "revised structural drawing for appl#200003295766 for foundation work",
      "source": "sf-building-permits"
    },
    {
      "number": "M16346",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-06-06",
      "status_date": "2002-06-06",
      "revised_cost": 85000,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "200003295766",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2000-03-29",
      "status_date": "2002-01-08",
      "estimated_cost": 85000,
      "revised_cost": 180000,
      "description": "add new 2nd story. add new family rm. new kitchen & bathroom , new deck. (less than 30\"ht) at rear.",
      "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=4179",
      "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=3603076&$order=closed_roll_year%20DESC&$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=3603&lot=076",
      "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=3603076",
      "retrieved": "2026-07-28"
    }
  ]
}