{
  "address": "3339–3341 21st Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/21st-street/3339/",
  "apn": "3617075",
  "block": "3617",
  "lot": "075",
  "eas_baseid": "362908",
  "coordinates": {
    "lat": 37.756603,
    "lng": -122.422005
  },
  "address_range": "3339–3341",
  "street_numbers_on_parcel": [
    "3339",
    "3341"
  ],
  "parcel": {
    "year_built": 1900,
    "units": 4,
    "stories": 2,
    "rooms": 12,
    "bathrooms": 4,
    "bedrooms": 4,
    "lot_area_sqft": 2850,
    "building_area_sqft": 2733,
    "basement_area_sqft": 275,
    "lot_depth_ft": 14,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 4 units or less",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 9,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "3341 3339 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1355693,
    "assessed_improvement_value": 581011,
    "last_sale_date": "2022-06-03"
  },
  "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": "202510016466",
      "type": "otc alterations permit",
      "status": "filed",
      "filed": "2025-10-01",
      "status_date": "2025-10-01",
      "estimated_cost": 40000,
      "revised_cost": 256767,
      "description": "expand one unit: down to level 1 storage area create new bedroom and bathrooms. replace non-historic wood garage door w/new hinged wood garage door.",
      "source": "sf-building-permits"
    },
    {
      "number": "202501289233",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-01-28",
      "status_date": "2026-01-22",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "repairing and replacing deck boards and stair treds (less than 50%) in kind work and materials as needed. the deck is 4 1/2' widith and 25' length and runs along the 2/f with stairs leading to the back yard. of the side yard/inside corridor of the bldg to the rear. work not street visible.",
      "source": "sf-building-permits"
    },
    {
      "number": "201712136380",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2017-12-13",
      "status_date": "2018-05-30",
      "estimated_cost": 20000,
      "revised_cost": 25000,
      "description": "repair extg stairs deck guardrail. no change in layout or overall dimentions. repairs in kind.",
      "source": "sf-building-permits"
    },
    {
      "number": "201707061150",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2017-07-06",
      "status_date": "2017-07-06",
      "estimated_cost": 21816,
      "revised_cost": 21816,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200912092939",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-12-09",
      "status_date": "2010-02-08",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "comply with nov# 200922605-dry rot repair, less than 50% of the entire deck structure",
      "source": "sf-building-permits"
    },
    {
      "number": "200409144038",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-09-14",
      "status_date": "2004-11-30",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "replace exist damaged front exterior stairs leading down frm sidewalk in kind per plan.nov 200452207",
      "source": "sf-building-permits"
    },
    {
      "number": "200409013133",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2004-09-01",
      "status_date": "2004-09-29",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "repair rotten wooden stairs/to comply with nov# 200452207",
      "source": "sf-building-permits"
    },
    {
      "number": "200108015074",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2001-08-01",
      "status_date": "2001-11-30",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to renew permit#2000/03/31/6009 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "200003316009",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2000-03-31",
      "status_date": "2001-03-20",
      "estimated_cost": 15000,
      "revised_cost": 15000,
      "description": "repair (e) two story deck as per/plans, includes replacement of post",
      "source": "sf-building-permits"
    },
    {
      "number": "9208752",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1992-05-29",
      "status_date": "1993-02-18",
      "estimated_cost": 2000,
      "revised_cost": 20000,
      "description": "legalize space to comply w/approved permit & violation notic",
      "source": "sf-building-permits"
    },
    {
      "number": "9200026",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1992-01-02",
      "status_date": "1992-07-14",
      "estimated_cost": 4000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8709870",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "1987-07-14",
      "status_date": "1991-07-15",
      "estimated_cost": 1000,
      "revised_cost": 10000,
      "description": "converse 2 units to 1 unit, remove 2 doors, non structural",
      "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=3339",
      "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=3617075&$order=closed_roll_year%20DESC&$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=3617&lot=075",
      "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=3617075",
      "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(-122.4220052074985%2037.75660316574748)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}