{
  "address": "3536 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3536/",
  "apn": "3606019",
  "block": "3606",
  "lot": "019",
  "eas_baseid": "362174",
  "coordinates": {
    "lat": 37.756818,
    "lng": -122.426588
  },
  "parcel": {
    "year_built": 1904,
    "units": 2,
    "stories": 2,
    "rooms": 10,
    "bathrooms": 2,
    "lot_area_sqft": 2850,
    "building_area_sqft": 2710,
    "lot_depth_ft": 14,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "3538 3536 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1254519,
    "assessed_improvement_value": 836341,
    "last_sale_date": "2004-11-12"
  },
  "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": "1904",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201211285044",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2012-11-28",
      "status_date": "2012-11-28",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "replace sections of dry rotted siding on back & side exterior of house, replace to original look with same wood siding approx 20 sq ft.",
      "source": "sf-building-permits"
    },
    {
      "number": "201111048295",
      "type": "otc alterations permit",
      "status": "filed",
      "filed": "2011-11-04",
      "status_date": "2011-11-04",
      "description": "dryrot repair front bay & deck, replace rotted member, same size & location.",
      "source": "sf-building-permits"
    },
    {
      "number": "201111048296",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-11-04",
      "status_date": "2012-01-03",
      "estimated_cost": 3000,
      "revised_cost": 4000,
      "description": "dryrot repair front bay & deck, replace rotted member, same size & location.",
      "source": "sf-building-permits"
    },
    {
      "number": "201110247438",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-10-24",
      "status_date": "2012-01-03",
      "estimated_cost": 3000,
      "revised_cost": 6000,
      "description": "replace extg front porch rotted 6x6 post and reinforce extg post support and concrete footing. dry rot repair and replace front entrance guard rail wall rotted members and restucco approx. 100 sq ft area.",
      "source": "sf-building-permits"
    },
    {
      "number": "200502044868",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2005-02-04",
      "status_date": "2005-02-04",
      "estimated_cost": 14800,
      "revised_cost": 14800,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200411239990",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-11-23",
      "status_date": "2005-05-23",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "remodeled two bathrms as per plans of michael marsh - no structural work all interior",
      "source": "sf-building-permits"
    },
    {
      "number": "9616488",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1996-09-03",
      "status_date": "1996-12-23",
      "estimated_cost": 4500,
      "description": "dry rot repair on front roof deck & stair",
      "source": "sf-building-permits"
    },
    {
      "number": "9614480",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1996-08-07",
      "status_date": "1996-12-23",
      "estimated_cost": 15000,
      "description": "rmve dropped ceiling & partition wall, replace w/sheetrock",
      "source": "sf-building-permits"
    },
    {
      "number": "9109140",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1991-05-24",
      "status_date": "1991-12-30",
      "estimated_cost": 8000,
      "description": "remodel interior, relocate walls, build closet & new walls.",
      "source": "sf-building-permits"
    },
    {
      "number": "9004590",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-03-08",
      "status_date": "1990-05-08",
      "estimated_cost": 8000,
      "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=3536",
      "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=3606019&$order=closed_roll_year%20DESC&$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=019",
      "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=3606019",
      "retrieved": "2026-07-28"
    }
  ]
}