{
  "address": "3766–3768 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3766/",
  "apn": "3598020",
  "block": "3598",
  "lot": "020",
  "eas_baseid": "361627",
  "coordinates": {
    "lat": 37.758518,
    "lng": -122.425007
  },
  "address_range": "3766–3768",
  "street_numbers_on_parcel": [
    "3766",
    "3768"
  ],
  "parcel": {
    "year_built": 1907,
    "units": 2,
    "stories": 2,
    "rooms": 11,
    "bathrooms": 2,
    "bedrooms": 5,
    "lot_area_sqft": 2850,
    "building_area_sqft": 2884,
    "lot_depth_ft": 14,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 8,
    "assessor_neighborhood": "Mission Dolores",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "3768 3766 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 46640,
    "assessed_improvement_value": 52616
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "California Register Historic District, Historic Survey Result",
    "yearbuilt": "1907",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Inner Mission Boulevards and Alleys Reconstruction Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "No local landmark protection",
    "local_landmark_protection": false,
    "period_of_significance": "1906–1917",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "M1102547",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-06-28",
      "status_date": "2019-06-28",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M267826",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2011-06-09",
      "status_date": "2011-06-09",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201010042147",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-10-04",
      "status_date": "2010-11-05",
      "estimated_cost": 7880,
      "revised_cost": 7880,
      "description": "re-roof",
      "source": "sf-building-permits"
    },
    {
      "number": "200701232375",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2007-01-23",
      "status_date": "2007-01-23",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "replace water heater/range-stove flue in upper/lower units, replace original sink upper unit w/ new pedestal sink, replace toe drain in upper unit tub. tue to leaks, replace lavy p trat waste line roof repair around kitchen ventilation shaft.",
      "source": "sf-building-permits"
    },
    {
      "number": "200610276269",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-10-27",
      "status_date": "2006-10-27",
      "estimated_cost": 9000,
      "revised_cost": 9000,
      "description": "repair water damaged, wood stud in basement. leaks in galvanized steel pipe, replace gsp w/ copper pipe.",
      "source": "sf-building-permits"
    },
    {
      "number": "9518340",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1995-10-31",
      "status_date": "1996-08-27",
      "estimated_cost": 2500,
      "description": "horizontal addition",
      "source": "sf-building-permits"
    },
    {
      "number": "9021205",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-10-15",
      "status_date": "1991-01-15",
      "estimated_cost": 3450,
      "description": "re-roofing",
      "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=3766",
      "retrieved": "2026-07-31"
    },
    {
      "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=3598020&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3598&lot=020",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3598020",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-historic-districts",
      "name": "SF Planning Department — Historic Districts via DataSF",
      "query": "https://data.sfgov.org/resource/63x5-g3m4.json?$where=intersects(the_geom,%20%27POINT(-122.42500721477957%2037.75851788222895)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}