{
  "address": "3549–3551 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3549/",
  "apn": "3609081",
  "block": "3609",
  "lot": "081",
  "eas_baseid": "362426",
  "coordinates": {
    "lat": 37.758364,
    "lng": -122.420129
  },
  "address_range": "3549–3551",
  "street_numbers_on_parcel": [
    "3549",
    "3551"
  ],
  "parcel": {
    "year_built": 1900,
    "units": 2,
    "stories": 2,
    "rooms": 8,
    "bathrooms": 2,
    "lot_area_sqft": 1868,
    "building_area_sqft": 2106,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "NC-1",
    "supervisor_district": 9,
    "assessor_neighborhood": "Inner Mission",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "3551 3549 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1194378,
    "assessed_improvement_value": 511876,
    "last_sale_date": "2022-09-26"
  },
  "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": "202111152360",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-11-15",
      "status_date": "2021-12-08",
      "estimated_cost": 500,
      "revised_cost": 10000,
      "description": "replace counter tops at kitchen area, install kitchen sink, stove auti tilt bracket, put back garage disposal and dish washer.",
      "source": "sf-building-permits"
    },
    {
      "number": "202109098073",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-09-09",
      "status_date": "2021-12-08",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "bathroom remodel. no wall removal. fixture bathroom replacement led lites with sensors. replace exhaust fan and convert exhausted vent. no layout change.",
      "source": "sf-building-permits"
    },
    {
      "number": "201505227049",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-05-22",
      "status_date": "2016-06-22",
      "estimated_cost": 15511,
      "revised_cost": 15511,
      "description": "rear of building - bedroom: replace gliding. kitchen: replace 1 window with operable awning. replace exterior moulding & rustic siding of the as needed. installing to at existing opening",
      "source": "sf-building-permits"
    },
    {
      "number": "201306119245",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-06-11",
      "status_date": "2013-08-30",
      "estimated_cost": 2000,
      "revised_cost": 2000,
      "description": "revision to 201208288466 to add a toilet in the basement garage and replace interior finishes at existing study at 1st fl",
      "source": "sf-building-permits"
    },
    {
      "number": "M392507",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2013-05-08",
      "status_date": "2013-05-08",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "201208288466",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-08-28",
      "status_date": "2013-08-30",
      "estimated_cost": 75000,
      "revised_cost": 75000,
      "description": "replace extg foundation at extg garage area. new concrete side access stairs on grade.",
      "source": "sf-building-permits"
    },
    {
      "number": "M177186",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2009-08-17",
      "status_date": "2009-08-17",
      "revised_cost": 1,
      "description": "street space & sidewalk permit only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200805192338",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-05-19",
      "status_date": "2008-09-15",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew pa# 2007/08/03/8715 for final inspection only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200708038715",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-08-03",
      "status_date": "2008-09-15",
      "estimated_cost": 15500,
      "revised_cost": 15500,
      "description": "remove lathe/plaster & old fixtures, move sink 36\", add dishwasher line. remove old wiring. install new wiring w/ correct circuit distribution. add new drywall, install new cabinets. no structural work is anticipated ( all in kitchen only).",
      "source": "sf-building-permits"
    },
    {
      "number": "9717766",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1997-09-15",
      "status_date": "1999-02-24",
      "estimated_cost": 14875,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9023280",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-11-08",
      "status_date": "1990-12-04",
      "estimated_cost": 5500,
      "description": "termite report",
      "source": "sf-building-permits"
    },
    {
      "number": "8610163",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1986-08-19",
      "status_date": "1987-01-23",
      "estimated_cost": 250,
      "description": "termite work",
      "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=3549",
      "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=3609081&$order=closed_roll_year%20DESC&$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=3609&lot=081",
      "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=3609081",
      "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(-122.42012861119522%2037.75836359090371)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}