{
  "address": "3420 21st Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/21st-street/3420/",
  "apn": "3607014",
  "block": "3607",
  "lot": "014",
  "eas_baseid": "488433",
  "coordinates": {
    "lat": 37.756886,
    "lng": -122.423933
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 2,
    "rooms": 8,
    "bathrooms": 4,
    "bedrooms": 4,
    "lot_area_sqft": 2848,
    "building_area_sqft": 1962,
    "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 3420 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 798377,
    "assessed_improvement_value": 641451,
    "last_sale_date": "1998-06-16"
  },
  "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",
    "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": "201009291875",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-09-29",
      "status_date": "2010-12-07",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "reroofing - flat roof and slope roof together. for slope roof, product uint weight less than 5 lbs/sq.ft.",
      "source": "sf-building-permits"
    },
    {
      "number": "200104277887",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2001-04-27",
      "status_date": "2001-05-23",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "additional foundation support revision 2 changes",
      "source": "sf-building-permits"
    },
    {
      "number": "200009180796",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2000-09-18",
      "status_date": "2001-03-10",
      "estimated_cost": 2000,
      "revised_cost": 2000,
      "description": "cut over hang of roof (facade already approved",
      "source": "sf-building-permits"
    },
    {
      "number": "200005099446",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2000-05-09",
      "status_date": "2001-05-23",
      "estimated_cost": 3500,
      "revised_cost": 3500,
      "description": "revise pa#9920052-cut deck & additional foundation work",
      "source": "sf-building-permits"
    },
    {
      "number": "9920052",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2000-02-09",
      "status_date": "2001-05-23",
      "estimated_cost": 50000,
      "revised_cost": 50000,
      "description": "three story addition, first floor remodeling, scnd fl bathrm",
      "source": "sf-building-permits"
    },
    {
      "number": "9302396",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1993-02-12",
      "status_date": "1997-04-24",
      "estimated_cost": 2000,
      "description": "replace foundation on both sides,dry rot damage repair",
      "source": "sf-building-permits"
    },
    {
      "number": "9010113",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1990-05-23",
      "status_date": "1991-03-04",
      "estimated_cost": 1500,
      "description": "fix and repair shower stall, waterproof sheetrock",
      "source": "sf-building-permits"
    },
    {
      "number": "9006011",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1990-03-29",
      "status_date": "1990-07-29",
      "estimated_cost": 2400,
      "description": "termite repair",
      "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=3420",
      "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=3607014&$order=closed_roll_year%20DESC&$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=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=3607014",
      "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(-122.42393260038583%2037.75688641783541)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}