{
  "address": "3740–3744 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3740/",
  "apn": "3598014",
  "block": "3598",
  "lot": "014",
  "eas_baseid": "361622",
  "coordinates": {
    "lat": 37.758549,
    "lng": -122.42449
  },
  "address_range": "3740–3744",
  "street_numbers_on_parcel": [
    "3740",
    "3742",
    "3744"
  ],
  "parcel": {
    "year_built": 1908,
    "units": 3,
    "stories": 2,
    "rooms": 15,
    "bathrooms": 3,
    "lot_area_sqft": 2848,
    "building_area_sqft": 3150,
    "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": "3744 3740 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 46640,
    "assessed_improvement_value": 67894
  },
  "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": "1908",
    "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": "201511122407",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-11-12",
      "status_date": "2016-03-25",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "repair front left stair wall, ni kind wood frame with stucco exterior to match stone appearance. less than 50 percent of wall to be repaired.",
      "source": "sf-building-permits"
    },
    {
      "number": "M392907",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2013-05-09",
      "status_date": "2013-05-09",
      "revised_cost": 1,
      "description": "street space & sidewalk repair",
      "source": "sf-building-permits"
    },
    {
      "number": "M203029",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2010-05-19",
      "status_date": "2010-05-19",
      "revised_cost": 1,
      "description": "street space & sidewalk permit",
      "source": "sf-building-permits"
    },
    {
      "number": "200205247397",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2002-05-24",
      "status_date": "2002-09-24",
      "estimated_cost": 4000,
      "revised_cost": 4000,
      "description": "repair the 2 rear stairways wood dry rot - repair work not to exceed 50% of stair structure",
      "source": "sf-building-permits"
    },
    {
      "number": "9902003",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1999-02-01",
      "status_date": "1999-08-01",
      "estimated_cost": 5600,
      "description": "reroofing",
      "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=3740",
      "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=3598014&$order=closed_roll_year%20DESC&$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=014",
      "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=3598014",
      "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(-122.42448983457649%2037.758549157281514)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}