{
  "address": "4020 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4020/",
  "apn": "3601015",
  "block": "3601",
  "lot": "015",
  "eas_baseid": "361762",
  "coordinates": {
    "lat": 37.758163,
    "lng": -122.430882
  },
  "parcel": {
    "year_built": 1912,
    "units": 2,
    "stories": 2,
    "rooms": 13,
    "bathrooms": 3,
    "lot_area_sqft": 5697,
    "building_area_sqft": 3578,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "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 4020 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1582186,
    "assessed_improvement_value": 1054784,
    "last_sale_date": "2001-05-31"
  },
  "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": "1912",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202605131206",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2026-05-13",
      "status_date": "2026-06-01",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "kitchen main floor - replace cabinets, countertops, appliances & sink & fixtures using (e) locations & waste supply lines, (e) electrical systems & locations. work inkind",
      "source": "sf-building-permits"
    },
    {
      "number": "202605121106",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2026-05-12",
      "status_date": "2026-05-20",
      "estimated_cost": 3500,
      "revised_cost": 3500,
      "description": "garage roof only: re-roofing: install 3 layers of certained feed, sa cap system, 1. layer of nail bas, 1 layer of ply bas, 1 layer of sa cap self adhered, no hot work.",
      "source": "sf-building-permits"
    },
    {
      "number": "202603318604",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2026-03-31",
      "status_date": "2026-07-10",
      "estimated_cost": 33000,
      "revised_cost": 33000,
      "description": "re-roofing: remove and replace roofing material / existing roofing material (in-kind)",
      "source": "sf-building-permits"
    },
    {
      "number": "202511038746",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-11-03",
      "status_date": "2026-06-01",
      "estimated_cost": 42000,
      "revised_cost": 41371,
      "description": "remodel 1 existing bathroom on 3/f.",
      "source": "sf-building-permits"
    },
    {
      "number": "200203060766",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2002-03-06",
      "status_date": "2002-07-06",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "reduction in deck size from 8 to 6 foot",
      "source": "sf-building-permits"
    },
    {
      "number": "200110251749",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2001-10-25",
      "status_date": "2002-07-24",
      "estimated_cost": 23000,
      "revised_cost": 60000,
      "description": "rmdl exist kitchen,bathrms,rplace wndws. exterior reduce size of nonconform porch/ rear yard 2nd flr",
      "source": "sf-building-permits"
    },
    {
      "number": "200108085609",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2001-08-08",
      "status_date": "2003-11-20",
      "estimated_cost": 26000,
      "revised_cost": 26000,
      "description": "interior remodel on g/fl., new bathroom in (e) storage area, kitchen remodel, remove (e) softwood fl",
      "source": "sf-building-permits"
    },
    {
      "number": "200107274664",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-07-27",
      "status_date": "2001-11-27",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "removing kchn cabnets and wall covering",
      "source": "sf-building-permits"
    },
    {
      "number": "200003154460",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2000-03-15",
      "status_date": "2000-05-02",
      "revised_cost": 1,
      "description": "renew expired appl #9913963",
      "source": "sf-building-permits"
    },
    {
      "number": "9913963",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1999-07-09",
      "status_date": "1999-12-06",
      "estimated_cost": 4000,
      "description": "remove illegal unit in basement-remove all plumbing",
      "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=4020",
      "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=3601015&$order=closed_roll_year%20DESC&$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=3601&lot=015",
      "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=3601015",
      "retrieved": "2026-07-28"
    }
  ]
}