{
  "address": "3860 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3860/",
  "apn": "3603020",
  "block": "3603",
  "lot": "020",
  "eas_baseid": "361931",
  "coordinates": {
    "lat": 37.756385,
    "lng": -122.433775
  },
  "parcel": {
    "year_built": 1905,
    "units": 1,
    "stories": 3,
    "rooms": 9,
    "bathrooms": 2,
    "bedrooms": 4,
    "lot_area_sqft": 2850,
    "building_area_sqft": 2891,
    "lot_depth_ft": 14,
    "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": "Castro/Upper Market",
    "property_location_raw": "0000 3860 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 2519360,
    "assessed_improvement_value": 1079725,
    "last_sale_date": "2020-10-16"
  },
  "historic_status": {
    "ceqa_status_code": "B",
    "ceqa_status_code_article_10_11": "B",
    "ceqa_status_label": "Unevaluated",
    "reason": "Historic Survey Result and 45 years or older",
    "yearbuilt": "1905",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201007196956",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-07-19",
      "status_date": "2010-12-08",
      "estimated_cost": 15000,
      "revised_cost": 15000,
      "description": "revision to pa# 201004089858. replace concrete side front stairs to 1st floor below street level. create new laundry at 1st floor. all work shown on delta 1, 7/1/10",
      "source": "sf-building-permits"
    },
    {
      "number": "201004089858",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-04-08",
      "status_date": "2010-12-08",
      "estimated_cost": 210000,
      "revised_cost": 210000,
      "description": "infill addition at the rear under (e) structure at 1st floor level. remove (e) covered porch & replace with 2 bedrooms. replace (e) bathroom, replace sewer line to street. infill aprox 240 s.f.",
      "source": "sf-building-permits"
    },
    {
      "number": "200606123760",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-06-12",
      "status_date": "2006-06-15",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "for final inspection: 200306207320, 200309296060, 200404302714, 200409305654 for final inspection only",
      "source": "sf-building-permits"
    },
    {
      "number": "200605111392",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-05-11",
      "status_date": "2006-06-15",
      "estimated_cost": 4500,
      "revised_cost": 4500,
      "description": "repair to roof and deck at rear of house, no change to size. remove/replace (e) deck over roof in kind. no framing work to roof. about 150 sq ft.",
      "source": "sf-building-permits"
    },
    {
      "number": "200409305654",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-09-30",
      "status_date": "2006-06-15",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "final inspection for 200309396060 200404302714",
      "source": "sf-building-permits"
    },
    {
      "number": "200404302712",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2004-04-30",
      "status_date": "2004-04-30",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to renew pa#2002/06/14/9060, 2001/11/07/2623,2002/08/19/4311 for final insp.",
      "source": "sf-building-permits"
    },
    {
      "number": "200404302714",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-04-30",
      "status_date": "2006-06-15",
      "estimated_cost": 1500,
      "revised_cost": 1500,
      "description": "to renew pa#2003/09/29/6060 & 2003/06/20/7320 to complete work",
      "source": "sf-building-permits"
    },
    {
      "number": "M26676",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2004-03-11",
      "status_date": "2004-03-11",
      "revised_cost": 0,
      "description": "street space & sidewalk repair",
      "source": "sf-building-permits"
    },
    {
      "number": "200309296060",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-09-29",
      "status_date": "2006-06-15",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "add non structural partitions @ basement. revise proposed electrical & mechanical placement.",
      "source": "sf-building-permits"
    },
    {
      "number": "200306207320",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-06-20",
      "status_date": "2006-06-15",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "upgrade post footings and floor construction @ basement. replace wood floor w concrete slab @ baseme",
      "source": "sf-building-permits"
    },
    {
      "number": "200208194311",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2002-08-19",
      "status_date": "2002-08-19",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "add 3 skylights, replace rear windows, add transoms @ bedroom, install new finishes at 2/fl bedroom",
      "source": "sf-building-permits"
    },
    {
      "number": "200206149060",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2002-06-14",
      "status_date": "2002-06-14",
      "estimated_cost": 6000,
      "revised_cost": 6000,
      "description": "to renew pa#2001/11/07/2623 to complete work",
      "source": "sf-building-permits"
    },
    {
      "number": "200111072623",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-11-07",
      "status_date": "2002-05-07",
      "estimated_cost": 15000,
      "revised_cost": 15000,
      "description": "add 2 skylights, 1 window, powder room & replace stair to basement",
      "source": "sf-building-permits"
    },
    {
      "number": "200009080015",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2000-09-08",
      "status_date": "2001-01-08",
      "estimated_cost": 2000,
      "revised_cost": 2000,
      "description": "roof repair leaking skylights and fix damage framing replace in kind 2 skylights, use rated in pro",
      "source": "sf-building-permits"
    },
    {
      "number": "9810180",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1998-06-04",
      "status_date": "1998-09-25",
      "estimated_cost": 1,
      "description": "to renew pa#9801110 for final inspection",
      "source": "sf-building-permits"
    },
    {
      "number": "9804626",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1998-03-18",
      "status_date": "1999-06-29",
      "estimated_cost": 10000,
      "description": "horizontal addition",
      "source": "sf-building-permits"
    },
    {
      "number": "9801110",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-01-22",
      "status_date": "1998-09-25",
      "estimated_cost": 1000,
      "description": "repair cracked plaster,replace wppd railing & deck 2nd flr r",
      "source": "sf-building-permits"
    },
    {
      "number": "9717092",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1997-09-03",
      "status_date": "1999-06-29",
      "estimated_cost": 8900,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8614093",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1986-11-07",
      "status_date": "1987-05-22",
      "estimated_cost": 1200,
      "description": "install aluminum windows",
      "source": "sf-building-permits"
    },
    {
      "number": "8307310",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1983-07-28",
      "status_date": "1984-01-04",
      "estimated_cost": 8500,
      "description": "remodel and enlarge and existing bedroom on the second floor",
      "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=3860",
      "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=3603020&$order=closed_roll_year%20DESC&$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=3603&lot=020",
      "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=3603020",
      "retrieved": "2026-07-28"
    }
  ]
}