{
  "address": "3984 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3984/",
  "apn": "3600022",
  "block": "3600",
  "lot": "022",
  "eas_baseid": "361703",
  "coordinates": {
    "lat": 37.758232,
    "lng": -122.429742
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 3,
    "rooms": 9,
    "bathrooms": 3,
    "bedrooms": 4,
    "lot_area_sqft": 2848,
    "building_area_sqft": 2762,
    "basement_area_sqft": 830,
    "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 3984 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 4060423,
    "assessed_improvement_value": 1740180,
    "last_sale_date": "2017-01-27"
  },
  "historic_status": {
    "ceqa_status_code": "C",
    "ceqa_status_code_article_10_11": "C",
    "ceqa_status_label": "Not a historical resource",
    "reason": "Historic Resource Evaluation Response",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201606281040",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2016-06-28",
      "status_date": "2016-11-10",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revision to app#201307091387: 1)at roofdeck, along east p.l. change glass guardrail to galv. steel. 2) at garage modify interior wall.",
      "source": "sf-building-permits"
    },
    {
      "number": "M685267",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2016-04-28",
      "status_date": "2016-04-28",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201511233312",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-11-23",
      "status_date": "2016-11-09",
      "estimated_cost": 18000,
      "revised_cost": 25000,
      "description": "new roof deck & new exterior spiral stairs.",
      "source": "sf-building-permits"
    },
    {
      "number": "M632689",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2015-10-26",
      "status_date": "2015-10-26",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "201506199432",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-06-19",
      "status_date": "2016-11-10",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revision to pa#201307091387, structural revision to footing sizes.",
      "source": "sf-building-permits"
    },
    {
      "number": "M578887",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2015-04-20",
      "status_date": "2015-04-20",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201307091387",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2013-07-09",
      "status_date": "2016-11-10",
      "estimated_cost": 290000,
      "revised_cost": 480000,
      "description": "vertical addition: new 2nd story with roof deck, 2 new bedrooms, 2 new baths, 1 kitchen remodel. replace foundations & seismic upgrade. convert storage area @ garage into habitable space. interior remodel of (e) dwelling.",
      "source": "sf-building-permits"
    },
    {
      "number": "9401887",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1994-02-04",
      "status_date": "1994-02-09",
      "estimated_cost": 7000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9216497S",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1992-09-24",
      "status_date": "1994-02-09",
      "estimated_cost": 12000,
      "description": "horizontal addition.",
      "source": "sf-building-permits"
    },
    {
      "number": "8809250",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1988-07-12",
      "status_date": "1988-11-09",
      "estimated_cost": 1700,
      "description": "install glass skylight",
      "source": "sf-building-permits"
    },
    {
      "number": "8716061",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1987-11-09",
      "status_date": "1988-02-08",
      "estimated_cost": 1200,
      "description": "installation of 32x48 inch skylight",
      "source": "sf-building-permits"
    },
    {
      "number": "8312866",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1983-12-16",
      "status_date": "1985-05-20",
      "estimated_cost": 10000,
      "description": "add one room on top of structure revise appl 8304453",
      "source": "sf-building-permits"
    },
    {
      "number": "8304453",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1983-05-20",
      "status_date": "1983-10-04",
      "estimated_cost": 12000,
      "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=3984",
      "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=3600022&$order=closed_roll_year%20DESC&$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=3600&lot=022",
      "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=3600022",
      "retrieved": "2026-07-28"
    }
  ]
}