{
  "address": "3755 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3755/",
  "apn": "3607065",
  "block": "3607",
  "lot": "065",
  "eas_baseid": "362285",
  "coordinates": {
    "lat": 37.758047,
    "lng": -122.4247
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 3,
    "rooms": 12,
    "bathrooms": 2,
    "bedrooms": 4,
    "lot_area_sqft": 2848,
    "building_area_sqft": 3928,
    "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": "Mission",
    "property_location_raw": "0000 3755 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 3178560,
    "assessed_improvement_value": 1566239,
    "last_sale_date": "2021-05-17"
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A*",
    "ceqa_status_label": "Historic resource",
    "reason": "Article 10 Historic District, California Register Historic District, Historic Survey Result",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": true,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Liberty Hill Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "Article 10 historic district",
    "local_landmark_protection": true,
    "period_of_significance": "1860s–1906",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "202504164543",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-04-16",
      "status_date": "2025-04-24",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to obtain final inspection for work approved under 202204293288,202201186126, and 202205063699. all work is complete",
      "source": "sf-building-permits"
    },
    {
      "number": "202302272672",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-02-27",
      "status_date": "2025-04-24",
      "estimated_cost": 1,
      "revised_cost": 98000,
      "description": "revision to pa#202204293288 for additional info for spa in ground",
      "source": "sf-building-permits"
    },
    {
      "number": "202205063699",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2022-05-06",
      "status_date": "2025-04-24",
      "estimated_cost": 1,
      "revised_cost": 20000,
      "description": "revision to 202201186126. interior renovarion: kitchen remodel, new main bedroom & bath configurarion. new 3rd fl bath and laundry. no changes to exterior. upgrade lihgting & electrical w/ new radiant fl.",
      "source": "sf-building-permits"
    },
    {
      "number": "202204293288",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2022-04-29",
      "status_date": "2025-04-24",
      "estimated_cost": 75000,
      "revised_cost": 75000,
      "description": "renovation of rear facade within existing building footprint. rear yard fill in under 12 foot tall one-story. under (e) cantaliever. new glazing at rear facade relevant permits: bpa# 202201186126 building for interior renovation",
      "source": "sf-building-permits"
    },
    {
      "number": "202201186126",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2022-01-18",
      "status_date": "2025-04-24",
      "estimated_cost": 300000,
      "revised_cost": 300000,
      "description": "interior renovation of a single family home. alteration include kitchen remodel, new main bedroom & bath configuration. new 3rd floor bathroom & laundry areas. no change to exterior. upgrade lighting & electrical with new radiant floor.",
      "source": "sf-building-permits"
    },
    {
      "number": "201205039762",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-05-03",
      "status_date": "2012-11-06",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "remodel existing kitchen, new cabinets, counter tops, flooring, electrical, plumbing, no structural.",
      "source": "sf-building-permits"
    },
    {
      "number": "200406075712",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2004-06-07",
      "status_date": "2007-01-03",
      "estimated_cost": 21000,
      "revised_cost": 21000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200402236994",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2004-02-23",
      "status_date": "2004-02-23",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "repair cable trench cut into foundation in garage area near front",
      "source": "sf-building-permits"
    },
    {
      "number": "200304101929",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-04-10",
      "status_date": "2003-06-24",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "sfusd-677' need to comply.convert storage space into add'l living space. revision to 2001/1031/2225.",
      "source": "sf-building-permits"
    },
    {
      "number": "200303149713",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2003-03-14",
      "status_date": "2003-03-14",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to renew app#9910024,2000/05/08/9353, 2001/01/02/8978 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "200303149714",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-03-14",
      "status_date": "2003-06-24",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "to renew app#2001/10/31/2225 sheetrock & handrails for remaining work. app#9619828 & 2000/05/08/9353",
      "source": "sf-building-permits"
    },
    {
      "number": "M23115",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2003-03-11",
      "status_date": "2003-03-11",
      "revised_cost": 0,
      "description": "sidewalk",
      "source": "sf-building-permits"
    },
    {
      "number": "200110312225",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-10-31",
      "status_date": "2002-04-30",
      "estimated_cost": 8000,
      "revised_cost": 8000,
      "description": "enlarge garage 8 x 18' within envelope ref#9619828",
      "source": "sf-building-permits"
    },
    {
      "number": "200101028978",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-01-02",
      "status_date": "2002-02-27",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "for final inspection for 9910024.",
      "source": "sf-building-permits"
    },
    {
      "number": "M13274",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2000-06-30",
      "status_date": "2001-06-30",
      "revised_cost": 40000,
      "description": "street space use",
      "source": "sf-building-permits"
    },
    {
      "number": "200005089353",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2000-05-08",
      "status_date": "2002-02-27",
      "estimated_cost": 6000,
      "revised_cost": 6000,
      "description": "voluntary upgrade/reinforce and 72 lf of property retainiing wall",
      "source": "sf-building-permits"
    },
    {
      "number": "M11575",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2000-02-14",
      "status_date": "2000-06-14",
      "revised_cost": 0,
      "description": "street space use",
      "source": "sf-building-permits"
    },
    {
      "number": "9910024",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1999-05-20",
      "status_date": "2002-02-27",
      "estimated_cost": 80000,
      "description": "renewal of 9619828",
      "source": "sf-building-permits"
    },
    {
      "number": "9716598",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1997-08-27",
      "status_date": "1997-12-18",
      "estimated_cost": 7000,
      "description": "replace 50 of retaining wall & concrete wall on east prop ln",
      "source": "sf-building-permits"
    },
    {
      "number": "9619828",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "1996-10-16",
      "status_date": "1997-07-25",
      "estimated_cost": 80000,
      "description": "horizontal 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=3755",
      "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=3607065&$order=closed_roll_year%20DESC&$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=3607&lot=065",
      "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=3607065",
      "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(-122.42469991110643%2037.75804742110436)%27)",
      "retrieved": "2026-07-31"
    },
    {
      "id": "architecture-preservation-professionals-biographies",
      "name": "San Francisco Planning Department, Architecture, Planning, & Preservation Professionals: A Collection of Biographies (volume S–U), citywide historic context statement, adopted November 17, 2021, updated December 30, 2025",
      "query": "https://citypln-m-extnl.sfgov.org/SharedLinks.aspx?accesskey=6aa134fedbfb505f9869a41577817ec47d73aaaa886903d8430aea3b05cef0cc&VaultGUID=A4A7DACD-B0DC-4322-BD29-F6F07103C6E0",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Architecture, Planning & Preservation Professionals: A Collection of Biographies, adopted 2021",
      "retrieved": "2026-09-02"
    }
  ],
  "historical_record": [
    {
      "date": "1900",
      "kind": "construction",
      "description": "Designed by architect Charles Shaner.",
      "source": "architecture-preservation-professionals-biographies"
    }
  ],
  "building": {
    "architect": "Charles Shaner"
  }
}