{
  "address": "3424–3426 21st Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/21st-street/3424/",
  "apn": "3607015",
  "block": "3607",
  "lot": "015",
  "eas_baseid": "362235",
  "coordinates": {
    "lat": 37.756972,
    "lng": -122.424033
  },
  "address_range": "3424–3426",
  "street_numbers_on_parcel": [
    "3424",
    "3426"
  ],
  "parcel": {
    "year_built": 1904,
    "units": 5,
    "stories": 2,
    "rooms": 18,
    "bathrooms": 5,
    "lot_area_sqft": 2848,
    "building_area_sqft": 3952,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 5 to 14 Units",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "3426 3424 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1366030,
    "assessed_improvement_value": 585437,
    "last_sale_date": "2004-07-21"
  },
  "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": "1904",
    "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": "202405242986",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2024-05-24",
      "status_date": "2024-12-17",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "upgrade (e) fire alarm system to comply with sffc section 1103.7.6.1",
      "source": "sf-building-permits"
    },
    {
      "number": "201801229205",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-01-22",
      "status_date": "2018-03-08",
      "estimated_cost": 25000,
      "revised_cost": 25000,
      "description": "remodel one unit new kitchen cabinets, new tile in bathroom, new counter top",
      "source": "sf-building-permits"
    },
    {
      "number": "201708154830",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2017-08-15",
      "status_date": "2018-03-08",
      "estimated_cost": 45000,
      "revised_cost": 49000,
      "description": "compliance with mandatory seismic retofit program per 2016 sfebc chapter 4d & 2016 cebc appx a4.",
      "source": "sf-building-permits"
    },
    {
      "number": "M139165",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2008-10-27",
      "status_date": "2008-10-27",
      "revised_cost": 1,
      "description": "street space only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200803147211",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-03-14",
      "status_date": "2008-06-09",
      "estimated_cost": 10500,
      "revised_cost": 10500,
      "description": "work @ two units only. replace 5 front window with pella aluminum clad wood window. casement picture casement.",
      "source": "sf-building-permits"
    },
    {
      "number": "200609293806",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-09-29",
      "status_date": "2006-09-29",
      "estimated_cost": 21575,
      "revised_cost": 21575,
      "description": "replace in kind windows on sides and back (52) windows, same size & location, none facing street.",
      "source": "sf-building-permits"
    },
    {
      "number": "200408252488",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2004-08-25",
      "status_date": "2004-08-25",
      "estimated_cost": 40000,
      "revised_cost": 40000,
      "description": "cap foundations. replace portion of foundations. add beam at cantilevered floor",
      "source": "sf-building-permits"
    },
    {
      "number": "200204022947",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2002-04-02",
      "status_date": "2002-05-17",
      "estimated_cost": 6000,
      "revised_cost": 6000,
      "description": "repair the rear exterior stairs, not to exceed 50 percent as described in nov 200225008-repair in ki",
      "source": "sf-building-permits"
    },
    {
      "number": "8906989",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1989-04-26",
      "status_date": "1989-08-10",
      "estimated_cost": 4800,
      "description": "cut off studs and rake plate 4\", reinforce foundation.",
      "source": "sf-building-permits"
    },
    {
      "number": "8403823",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1984-04-11",
      "status_date": "1985-05-06",
      "estimated_cost": 1500,
      "description": "remove all of dry rot and repalce on decks stairs post only.",
      "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=3424",
      "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=3607015&$order=closed_roll_year%20DESC&$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=015",
      "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=3607015",
      "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(-122.42403311537642%2037.756971606913645)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}