{
  "address": "3855 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3855/",
  "apn": "3606073",
  "block": "3606",
  "lot": "073",
  "eas_baseid": "362205",
  "coordinates": {
    "lat": 37.757911,
    "lng": -122.426959
  },
  "parcel": {
    "year_built": 1885,
    "units": 1,
    "stories": 1,
    "rooms": 5,
    "bathrooms": 1,
    "bedrooms": 2,
    "lot_area_sqft": 2850,
    "building_area_sqft": 1267,
    "lot_depth_ft": 14,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 3855 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 173475,
    "assessed_improvement_value": 141926
  },
  "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": "1885",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "200209237166",
      "type": "new construction wood frame",
      "status": "cancelled",
      "filed": "2002-09-23",
      "status_date": "2005-07-05",
      "estimated_cost": 210000,
      "description": "erect a three story three unit residential bldg",
      "source": "sf-building-permits"
    },
    {
      "number": "200209237164",
      "type": "demolitions",
      "status": "cancelled",
      "filed": "2002-09-23",
      "status_date": "2005-07-05",
      "description": "demolish 1 story 1 dwelling unit bldg.",
      "source": "sf-building-permits"
    },
    {
      "number": "9316419",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1993-09-22",
      "status_date": "1994-02-23",
      "estimated_cost": 2800,
      "description": "remove and replace roofing including plywood",
      "source": "sf-building-permits"
    },
    {
      "number": "8802018",
      "type": "additions alterations or repairs",
      "status": "filing",
      "filed": "1988-02-19",
      "status_date": "1988-02-19",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "shorten bldg by 3 feet as on #8706337",
      "source": "sf-building-permits"
    },
    {
      "number": "8715425",
      "type": "demolitions",
      "status": "expired",
      "filed": "1987-10-29",
      "status_date": "1989-03-29",
      "description": "demolish single family dwelling",
      "source": "sf-building-permits"
    },
    {
      "number": "8706337",
      "type": "new construction wood frame",
      "status": "expired",
      "filed": "1987-05-13",
      "status_date": "1990-03-31",
      "estimated_cost": 360000,
      "description": "three story three unit residential bldg",
      "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=3855",
      "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=3606073&$order=closed_roll_year%20DESC&$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=3606&lot=073",
      "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=3606073",
      "retrieved": "2026-07-28"
    },
    {
      "id": "mission-dolores-context-statement",
      "name": "San Francisco Planning Department, with Roland-Nawi Associates, Carey & Company and consultants Katherine Petrin and Shayne E. Watson, Mission Dolores Neighborhood Historic Context Statement, prepared for the Mission Dolores Neighborhood Association, adopted July 20, 2022",
      "query": "https://citypln-m-extnl.sfgov.org/SharedLinks.aspx?accesskey=e312738442fad29bcb74b96538b857ca1a6e1bedd359bbfc0de2d4a255a1b7ae&VaultGUID=A4A7DACD-B0DC-4322-BD29-F6F07103C6E0",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Mission Dolores Neighborhood Historic Context Statement, adopted 2022",
      "retrieved": "2026-08-17"
    }
  ],
  "historic_survey": {
    "survey": "Mission Dolores Neighborhood Historic Context Statement, adopted 2022",
    "source": "mission-dolores-context-statement",
    "note": "Photographed as an example of the neighbourhood's single-family residences — a type the statement calls an exception there, surviving mainly as Victorian-era houses on the southern and western periphery and as cottages at the rear of long lots."
  }
}