{
  "address": "3580 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3580/",
  "apn": "3606026",
  "block": "3606",
  "lot": "026",
  "eas_baseid": "362179",
  "coordinates": {
    "lat": 37.756773,
    "lng": -122.427337
  },
  "parcel": {
    "year_built": 1907,
    "units": 1,
    "stories": 4,
    "rooms": 9,
    "bathrooms": 3,
    "bedrooms": 4,
    "lot_area_sqft": 5127,
    "building_area_sqft": 3777,
    "basement_area_sqft": 738,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RM-1",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 3580 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1647935,
    "assessed_improvement_value": 2892075,
    "last_sale_date": "2007-01-08"
  },
  "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": "1907",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201711305172",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2017-11-30",
      "status_date": "2026-01-09",
      "estimated_cost": 300,
      "revised_cost": 0,
      "description": "alteration of (e) rainwater sysyem",
      "source": "sf-building-permits"
    },
    {
      "number": "M667567",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2016-03-01",
      "status_date": "2016-03-01",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M654707",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2016-01-13",
      "status_date": "2016-01-13",
      "revised_cost": 1,
      "description": "street space permit renewal of permit m564788",
      "source": "sf-building-permits"
    },
    {
      "number": "201504133475",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2015-04-13",
      "status_date": "2026-01-09",
      "estimated_cost": 1,
      "revised_cost": 0,
      "description": "revision to 201011305785 and 201501165936/ revision to details of interior stair, provide test data for glass treads adn glass guardrails",
      "source": "sf-building-permits"
    },
    {
      "number": "201504073008",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-04-07",
      "status_date": "2016-02-11",
      "estimated_cost": 2500,
      "revised_cost": 5000,
      "description": "revision to pa # 2010 1130 5785 - part of remodel to sfd, add (n) paved deck in rear yard to be less than 36\" above grade.",
      "source": "sf-building-permits"
    },
    {
      "number": "201503130801",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-03-13",
      "status_date": "2016-01-14",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "install the fire sprinkler system throughout the entire bldg for remodeling single family per nfpa13 with new 2\" comb fire service off of work includes 2-inch underground with a 1 1/2\" combination meter. ref. app# 201011305785.",
      "source": "sf-building-permits"
    },
    {
      "number": "M564788",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2015-03-03",
      "status_date": "2015-03-03",
      "revised_cost": 1,
      "description": "street space permit - renewal of permit # m516048 (1335309)",
      "source": "sf-building-permits"
    },
    {
      "number": "201502027254",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2015-02-02",
      "status_date": "2026-01-09",
      "estimated_cost": 10000,
      "revised_cost": 0,
      "source": "sf-building-permits"
    },
    {
      "number": "201501165936",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-01-16",
      "status_date": "2016-02-08",
      "estimated_cost": 1,
      "revised_cost": 30000,
      "description": "revision to app#201011305785. revision to structural work on 4th floor, supporting new stair and landing previously permitted under app#201011305785.",
      "source": "sf-building-permits"
    },
    {
      "number": "201410249894",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-10-24",
      "status_date": "2016-02-08",
      "estimated_cost": 1,
      "revised_cost": 31000,
      "description": "revision permit #2010.1130.5785. additional architectural and structural work at front yard retaining walls and replace entry steps per plan.",
      "source": "sf-building-permits"
    },
    {
      "number": "M516048",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2014-09-08",
      "status_date": "2014-09-08",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M477507",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2014-04-07",
      "status_date": "2014-04-07",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "201311131747",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-11-13",
      "status_date": "2015-03-23",
      "estimated_cost": 46000,
      "revised_cost": 46000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "M420527",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2013-08-26",
      "status_date": "2013-08-26",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "201302120004",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-02-12",
      "status_date": "2013-03-12",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to obtain final inspection for work approved under pa# 201003128133. all work is complete",
      "source": "sf-building-permits"
    },
    {
      "number": "201011305785",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2010-11-30",
      "status_date": "2016-02-11",
      "estimated_cost": 371640,
      "revised_cost": 450000,
      "description": "renovation & addition: new 3rd floor & roof deck. horizontal & vertical addition at rear of bldg. 1 new bedroom on 2nd floor, 1 new bathroom on 3rd floor. new entry vestibule structure add to east side of bldg. re-roof entire bldg.",
      "source": "sf-building-permits"
    },
    {
      "number": "201003128133",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2010-03-12",
      "status_date": "2013-02-01",
      "estimated_cost": 8000,
      "revised_cost": 8000,
      "description": "replace property line wall (stepped with stairs) between 2ft. to 4ft., approx. 53ft.",
      "source": "sf-building-permits"
    },
    {
      "number": "200210028004",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2002-10-02",
      "status_date": "2004-10-07",
      "estimated_cost": 250000,
      "description": "new 2 story addition at rear yard.new deckon roof of garage.exterior&interior alteration.",
      "source": "sf-building-permits"
    },
    {
      "number": "9805004",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-03-24",
      "status_date": "1999-03-05",
      "estimated_cost": 12000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9802546",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-02-17",
      "status_date": "1999-03-05",
      "estimated_cost": 35000,
      "description": "remodel exist bath add new bath no structural",
      "source": "sf-building-permits"
    },
    {
      "number": "9613800",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1996-07-30",
      "status_date": "1997-08-27",
      "estimated_cost": 1500,
      "description": "repair dry rot",
      "source": "sf-building-permits"
    },
    {
      "number": "9612329",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1996-07-10",
      "status_date": "1996-11-10",
      "estimated_cost": 1,
      "description": "revisio to appl #9611980, calculations & drawing",
      "source": "sf-building-permits"
    },
    {
      "number": "9611980",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1996-07-03",
      "status_date": "1996-11-03",
      "estimated_cost": 1200,
      "description": "demolish brick at front bay window,repair dry rot",
      "source": "sf-building-permits"
    },
    {
      "number": "9602391",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1996-02-13",
      "status_date": "1996-04-04",
      "estimated_cost": 10200,
      "description": "kitchen remodel/new cab/tile floor/electrical/plumbing",
      "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=3580",
      "retrieved": "2026-07-28"
    },
    {
      "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=3606026&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3606&lot=026",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3606026",
      "retrieved": "2026-07-28"
    }
  ]
}