{
  "address": "4133 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4133/",
  "apn": "3603086",
  "block": "3603",
  "lot": "086",
  "eas_baseid": "361993",
  "coordinates": {
    "lat": 37.757529,
    "lng": -122.433245
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 2,
    "rooms": 6,
    "bathrooms": 1,
    "bedrooms": 2,
    "lot_area_sqft": 2850,
    "building_area_sqft": 2004,
    "lot_depth_ft": 14,
    "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 4133 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1225900,
    "assessed_improvement_value": 868766,
    "last_sale_date": "2006-11-15"
  },
  "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": "202310259456",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-10-25",
      "status_date": "2023-12-19",
      "estimated_cost": 21000,
      "revised_cost": 21000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "201905201152",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-05-20",
      "status_date": "2019-09-20",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "remodel garage install new structural beam, footings, waterproofing, electrical plugs, lights, instulation, gyp board",
      "source": "sf-building-permits"
    },
    {
      "number": "M1082807",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-05-20",
      "status_date": "2019-05-20",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M1024929",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-01-07",
      "status_date": "2019-01-07",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201811135676",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-11-13",
      "status_date": "2019-09-20",
      "estimated_cost": 7000,
      "revised_cost": 7000,
      "description": "replace siding at south & west facing walls. 450sq ft. work now visible from public right of way.",
      "source": "sf-building-permits"
    },
    {
      "number": "201808036412",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-08-03",
      "status_date": "2020-01-10",
      "estimated_cost": 40000,
      "revised_cost": 46000,
      "description": "remodel (e) kitchen and bathroom. replace 2 window in (e) opening - not visible from street. replace 1 door in (e) opening - not visible from st",
      "source": "sf-building-permits"
    },
    {
      "number": "M894047",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-02-26",
      "status_date": "2018-02-26",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "200709051857",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-09-05",
      "status_date": "2008-10-16",
      "estimated_cost": 40000,
      "revised_cost": 40000,
      "description": "24 sq. ft. addition, one story at rear. relocate plumbing. relocate non-bearing wall.",
      "source": "sf-building-permits"
    },
    {
      "number": "200707056065",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-07-05",
      "status_date": "2008-10-16",
      "estimated_cost": 8500,
      "revised_cost": 8500,
      "description": "replace vinyl windows with new wood sash dh windows, relocate non structural partitio walls",
      "source": "sf-building-permits"
    },
    {
      "number": "200705111115",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2007-05-11",
      "status_date": "2007-05-11",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "remove wall finishes in bath and laundry room and bathroom cabinets. replace w/ new. new shower, new toilet, new sink. replace in kind.",
      "source": "sf-building-permits"
    },
    {
      "number": "200702063474",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-02-06",
      "status_date": "2008-10-16",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "move existing fireplace in existing living room, wood burning insert",
      "source": "sf-building-permits"
    },
    {
      "number": "200612129660",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-12-12",
      "status_date": "2007-01-02",
      "estimated_cost": 2500,
      "revised_cost": 2500,
      "description": "repair as per h.r. wellington report# 875029, item# 1d, 4a, 9a & 11b. (see attached termite report)",
      "source": "sf-building-permits"
    },
    {
      "number": "9811404",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-06-18",
      "status_date": "1998-12-18",
      "estimated_cost": 7300,
      "description": "reroof",
      "source": "sf-building-permits"
    },
    {
      "number": "9703531",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1997-02-26",
      "status_date": "1999-03-01",
      "estimated_cost": 1,
      "description": "renewal pa#s 8911928/9016811 for final inspection",
      "source": "sf-building-permits"
    },
    {
      "number": "9600368",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1996-01-09",
      "status_date": "1996-02-15",
      "estimated_cost": 2000,
      "description": "stucco dry rot repair",
      "source": "sf-building-permits"
    },
    {
      "number": "9026088",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-12-27",
      "status_date": "1991-02-05",
      "estimated_cost": 11306,
      "description": "install aluminum windows",
      "source": "sf-building-permits"
    },
    {
      "number": "9016818S",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1990-08-23",
      "status_date": "1993-05-26",
      "estimated_cost": 50000,
      "description": "remove first fl kitchen convert to one unit",
      "source": "sf-building-permits"
    },
    {
      "number": "8922516",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "1989-11-22",
      "status_date": "1990-03-01",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "remodel 2 floors of occupancy revision permit #8911928",
      "source": "sf-building-permits"
    },
    {
      "number": "8911928",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1989-07-07",
      "status_date": "1990-11-13",
      "estimated_cost": 100000,
      "description": "vertical addition",
      "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=4133",
      "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=3603086&$order=closed_roll_year%20DESC&$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=086",
      "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=3603086",
      "retrieved": "2026-07-28"
    },
    {
      "id": "eureka-valley-context-statement",
      "name": "Elaine B. Stiles, Eureka Valley Historic Context Statement, prepared for the Eureka Valley Neighborhood Association, adopted by the Historic Preservation Commission December 20, 2017",
      "query": "http://default.sfplanning.org/Preservation/EurekaValleyHCS/hp_eureka_valley_hcs_HCS_FINAL-122017.pdf",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Eureka Valley Historic Context Statement, adopted 2017",
      "retrieved": "2026-08-14"
    }
  ],
  "historic_survey": {
    "survey": "Eureka Valley Historic Context Statement (2017)",
    "source": "eureka-valley-context-statement",
    "style": "Stick, altered",
    "year_built_as_surveyed": "1898",
    "note": "Listed among the houses Fernando Nelson built in Eureka Valley. The statement is reconnaissance-level and says inclusion in it is not a judgement on a building's worthiness for preservation. It records it as a two-flat, now one unit."
  },
  "building": {
    "builder": "Fernando Nelson"
  }
}