{
  "address": "3852 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3852/",
  "apn": "3603018",
  "block": "3603",
  "lot": "018",
  "eas_baseid": "361929",
  "coordinates": {
    "lat": 37.756395,
    "lng": -122.433602
  },
  "parcel": {
    "year_built": 1905,
    "units": 1,
    "stories": 4,
    "rooms": 10,
    "bathrooms": 5,
    "bedrooms": 4,
    "lot_area_sqft": 2850,
    "building_area_sqft": 3408,
    "basement_area_sqft": 830,
    "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 3852 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 3105900,
    "assessed_improvement_value": 1331100,
    "last_sale_date": "2024-03-25"
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "California Register Historic District",
    "yearbuilt": "1905",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Castro & Liberty Streets Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "No local landmark protection",
    "local_landmark_protection": false,
    "period_of_significance": "1897–1906",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "202201206357",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-01-20",
      "status_date": "2022-01-27",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to obtain final inspection for work approved under pa# 201806202475. all work is complete.",
      "source": "sf-building-permits"
    },
    {
      "number": "M1164527",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-11-12",
      "status_date": "2019-11-12",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M1045288",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-03-01",
      "status_date": "2019-03-01",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M1005327",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-11-14",
      "status_date": "2018-11-14",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201806202475",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-06-20",
      "status_date": "2018-08-31",
      "estimated_cost": 6000,
      "revised_cost": 11000,
      "description": "revision to app#201801188894. new deck at rear 3rd floor.",
      "source": "sf-building-permits"
    },
    {
      "number": "M934187",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-06-04",
      "status_date": "2018-06-04",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M891767",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-02-21",
      "status_date": "2018-02-21",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201802090964",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-02-09",
      "status_date": "2018-02-21",
      "estimated_cost": 10000,
      "revised_cost": 25000,
      "description": "shoring plan for foundation replacement approved on pa #201706270476.",
      "source": "sf-building-permits"
    },
    {
      "number": "201801188894",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-01-18",
      "status_date": "2022-01-27",
      "estimated_cost": 700000,
      "revised_cost": 700000,
      "description": "interior renovation to include 1660 sq ft of additional conditioned space with in extg footprint at basement and 1st floors. new windows and doors at front and rear facades and new garden terrace at front yard.",
      "source": "sf-building-permits"
    },
    {
      "number": "201706270476",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2017-06-27",
      "status_date": "2018-01-03",
      "estimated_cost": 15000,
      "revised_cost": 98000,
      "description": "foundation replacement & excavation of the existing basement crawl space to create additoinal storage use.",
      "source": "sf-building-permits"
    },
    {
      "number": "201605046563",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2016-05-04",
      "status_date": "2021-07-12",
      "estimated_cost": 88600,
      "revised_cost": 88600,
      "description": "remodel kitchen and bathrooms (2) replaced in kind.remove sheetrock throughout",
      "source": "sf-building-permits"
    },
    {
      "number": "201006013561",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-06-01",
      "status_date": "2010-07-12",
      "estimated_cost": 740,
      "revised_cost": 740,
      "description": "replace bad steps in stairs & deck in rear yard, less than 50%. replace in kind, no structural work",
      "source": "sf-building-permits"
    },
    {
      "number": "9302625",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1993-02-17",
      "status_date": "1993-04-22",
      "estimated_cost": 9000,
      "description": "repair damage caused by automobile,return to original",
      "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=3852",
      "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=3603018&$order=closed_roll_year%20DESC&$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=018",
      "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=3603018",
      "retrieved": "2026-07-28"
    },
    {
      "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(-122.43360246533264%2037.756394987444985)%27)",
      "retrieved": "2026-07-28"
    }
  ]
}