{
  "address": "3476 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3476/",
  "apn": "3595020",
  "block": "3595",
  "lot": "020",
  "eas_baseid": "361421",
  "coordinates": {
    "lat": 37.758881,
    "lng": -122.41856
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 2,
    "rooms": 6,
    "bathrooms": 2,
    "bedrooms": 3,
    "lot_area_sqft": 2374,
    "building_area_sqft": 2450,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "NC-3",
    "supervisor_district": 9,
    "assessor_neighborhood": "Inner Mission",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 3476 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 587318,
    "assessed_improvement_value": 369511,
    "last_sale_date": "2010-01-25"
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "Historic Survey Result",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202212239137",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2022-12-23",
      "status_date": "2022-12-23",
      "estimated_cost": 100,
      "revised_cost": 100,
      "description": "reglazing windows - (7) total. front facade.",
      "source": "sf-building-permits"
    },
    {
      "number": "201403110486",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-03-11",
      "status_date": "2014-10-06",
      "estimated_cost": 7000,
      "revised_cost": 9000,
      "description": "convert storage to powder room, new plumbing to tie into extg water line. no structural changes proposed. no additional sq. footage. work is on 2/f, not 1/f garage level.",
      "source": "sf-building-permits"
    },
    {
      "number": "201310088803",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-10-08",
      "status_date": "2019-01-31",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to obtain final inspection for work approved under pa # 201012166859. all work is complete.",
      "source": "sf-building-permits"
    },
    {
      "number": "201102160400",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-02-16",
      "status_date": "2011-03-23",
      "estimated_cost": 2000,
      "revised_cost": 5000,
      "description": "revision to permit #201012166859 1. replace 1 ext. door, 2. replace 1 ext. window, 3. repair existin gsiding & replace where necessary. all work to match existing (siding on wall with sink, range and hood.)",
      "source": "sf-building-permits"
    },
    {
      "number": "201012166859",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2010-12-16",
      "status_date": "2019-01-25",
      "estimated_cost": 4950,
      "revised_cost": 9240,
      "description": "remodel kitchen: remove & replace cabinetry, reconfigure counters, replace damaged plaster, new sink & appliances. provide min 50% (per wattage) kitchen lights in high efficency lights.",
      "source": "sf-building-permits"
    },
    {
      "number": "201012025973",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-12-02",
      "status_date": "2010-12-28",
      "estimated_cost": 3500,
      "revised_cost": 3500,
      "description": "replace (e) brick footing with new reinforced concrete footing as shown on plan",
      "source": "sf-building-permits"
    },
    {
      "number": "200811106168",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-11-10",
      "status_date": "2008-12-11",
      "estimated_cost": 600,
      "revised_cost": 600,
      "description": "2-hour labor removal to dump wooden ladder on outside o building going to the roof. to complt w/his n.o.v.#200878374 dated 10/27/08. start o work inspection required to determine if ladder is required for egress.",
      "source": "sf-building-permits"
    },
    {
      "number": "200702053356",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2007-02-05",
      "status_date": "2011-10-31",
      "estimated_cost": 10852,
      "description": "repalce 10 wood sash windows with single hung vinyl replacement no chaznge in zize or color or location lkeness for likeness, visible from street",
      "source": "sf-building-permits"
    },
    {
      "number": "M49425",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-11-28",
      "status_date": "2006-11-28",
      "revised_cost": 0,
      "description": "sidewalk permit only.",
      "source": "sf-building-permits"
    },
    {
      "number": "M40862",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-09-05",
      "status_date": "2006-09-05",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "200301104999",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-01-10",
      "status_date": "2003-05-02",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "replace/strengthen (e) fence @ left rear side of property for nov#200116667 (attached)",
      "source": "sf-building-permits"
    },
    {
      "number": "200204123864",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2002-04-12",
      "status_date": "2002-07-29",
      "estimated_cost": 2500,
      "revised_cost": 2500,
      "description": "repair and replace e foundation under bathroom no change to building envelope",
      "source": "sf-building-permits"
    },
    {
      "number": "9022022",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-10-24",
      "status_date": "1991-01-07",
      "estimated_cost": 7565,
      "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=3476",
      "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=3595020&$order=closed_roll_year%20DESC&$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=3595&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=3595020",
      "retrieved": "2026-07-31"
    }
  ]
}