{
  "address": "3471 21st Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/21st-street/3471/",
  "apn": "3618039",
  "block": "3618",
  "lot": "039",
  "eas_baseid": "362951",
  "coordinates": {
    "lat": 37.756486,
    "lng": -122.424876
  },
  "parcel": {
    "year_built": 1959,
    "units": 5,
    "stories": 2,
    "rooms": 18,
    "bathrooms": 6,
    "lot_area_sqft": 2408,
    "building_area_sqft": 3968,
    "use": "Multi-Family Residential",
    "property_class": "TIC Bldg 4 units or less",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 3471 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 2205996,
    "assessed_improvement_value": 1470632,
    "last_sale_date": "2015-02-27"
  },
  "historic_status": {
    "ceqa_status_code": "B",
    "ceqa_status_code_article_10_11": "B",
    "ceqa_status_label": "Unevaluated",
    "reason": "No evaluation and 45 years or older",
    "yearbuilt": "1959",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202210114039",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2022-10-11",
      "status_date": "2022-10-11",
      "estimated_cost": 29245,
      "revised_cost": 29245,
      "description": "reroofing.",
      "source": "sf-building-permits"
    },
    {
      "number": "202201317012",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-01-31",
      "status_date": "2022-05-31",
      "estimated_cost": 3793,
      "revised_cost": 3793,
      "description": "one unit: replacing (1) window, non street visible. same size and location. proposed: wood composite <.30 u-factor.",
      "source": "sf-building-permits"
    },
    {
      "number": "202007150182",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-07-15",
      "status_date": "2020-09-24",
      "estimated_cost": 5000,
      "revised_cost": 10000,
      "description": "revision to mandatory soft story retrofit under app#201612195329. move steel frame due to extg field conditions and revise shear wall lengthens.",
      "source": "sf-building-permits"
    },
    {
      "number": "201612195329",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2016-12-19",
      "status_date": "2020-09-24",
      "estimated_cost": 80000,
      "revised_cost": 80000,
      "description": "mandatory soft story retrofit per 2012 chapter 34b add (2) one bay steel moment frames, new plywood shear walls and foundations",
      "source": "sf-building-permits"
    },
    {
      "number": "201409025165",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-09-02",
      "status_date": "2015-07-24",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "one unit - to complete work on pa#201006305670.",
      "source": "sf-building-permits"
    },
    {
      "number": "201407070568",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-07-07",
      "status_date": "2015-07-24",
      "estimated_cost": 15000,
      "revised_cost": 15000,
      "description": "one unit: in-kind bathroom renovation, new flooring, electrical & lighting upgrades, blow-in insulating & sheetrock, patching & sound proofing throughout.",
      "source": "sf-building-permits"
    },
    {
      "number": "201006305670",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2010-06-30",
      "status_date": "2015-07-24",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "remodel of kitchen on the 3rd floor. remove partial wall, add new counter. add can/ recessed lighting and one dedicated electrical outlet for fridge. no window or door work on this permit.",
      "source": "sf-building-permits"
    },
    {
      "number": "200907213053",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2009-07-21",
      "status_date": "2013-02-01",
      "estimated_cost": 25000,
      "revised_cost": 25000,
      "description": "replace all windows in building with newer update models, total of 30 windows in kind dual pane.",
      "source": "sf-building-permits"
    },
    {
      "number": "200610054336",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-10-05",
      "status_date": "2006-12-06",
      "estimated_cost": 4000,
      "revised_cost": 4000,
      "description": "remove extg door and side light and replace with new. remove planet in vestibule",
      "source": "sf-building-permits"
    },
    {
      "number": "200609051419",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-09-05",
      "status_date": "2006-11-29",
      "estimated_cost": 7000,
      "revised_cost": 7000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200608179786",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-08-17",
      "status_date": "2006-12-06",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "remove and replace kitchen (existing) and bathroom cabinets. no change to partitions or windows.",
      "source": "sf-building-permits"
    },
    {
      "number": "200608179789",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-08-17",
      "status_date": "2006-11-27",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "remove and replace existing kitchen and bathroom cabinets. no changes to partitions or windows",
      "source": "sf-building-permits"
    },
    {
      "number": "200608179791",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-08-17",
      "status_date": "2006-12-06",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "remove and replace existing kitchen and bathroom cabinets. no change to partitions or windows. one unit",
      "source": "sf-building-permits"
    },
    {
      "number": "200606144004",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-06-14",
      "status_date": "2006-12-06",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "remove + replace (e) kitchen bathroom cabinets + fixtures. no change to partition or windows.",
      "source": "sf-building-permits"
    },
    {
      "number": "200308131985",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-08-13",
      "status_date": "2004-02-18",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "revise exist permit to allow open kitchen area to dining area. open kitchen wall to allow for fridge",
      "source": "sf-building-permits"
    },
    {
      "number": "200307028628",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-07-02",
      "status_date": "2004-02-13",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "replace kitchen cabinets w/ new remodel bathroom,one bathroom and make into closet",
      "source": "sf-building-permits"
    },
    {
      "number": "200201227439",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2002-01-22",
      "status_date": "2002-05-23",
      "estimated_cost": 2350,
      "revised_cost": 2350,
      "description": "install 5 replacement windows-not visible from street",
      "source": "sf-building-permits"
    },
    {
      "number": "9303550",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1993-03-04",
      "status_date": "1994-01-05",
      "estimated_cost": 5000,
      "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=21ST&street_type=ST&address_number=3471",
      "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=3618039&$order=closed_roll_year%20DESC&$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=3618&lot=039",
      "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=3618039",
      "retrieved": "2026-07-31"
    }
  ]
}