{
  "address": "4145–4147 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4145/",
  "apn": "3603083",
  "block": "3603",
  "lot": "083",
  "eas_baseid": "361991",
  "coordinates": {
    "lat": 37.757513,
    "lng": -122.433507
  },
  "address_range": "4145–4147",
  "street_numbers_on_parcel": [
    "4145",
    "4147"
  ],
  "parcel": {
    "year_built": 1908,
    "units": 3,
    "stories": 2,
    "rooms": 11,
    "bathrooms": 3,
    "lot_area_sqft": 2848,
    "building_area_sqft": 3108,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 4 units or less",
    "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 4145 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1420146,
    "assessed_improvement_value": 608634,
    "last_sale_date": "2022-07-25"
  },
  "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": "1908",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202309196912",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2023-09-19",
      "status_date": "2023-11-30",
      "estimated_cost": 136000,
      "revised_cost": 136000,
      "description": "one unit 20th st: (2) new windows and (2) new doors (facing rear). plumbing and electrical as required by above scope. revison to (e) bathroom, kitchen, and dining area.",
      "source": "sf-building-permits"
    },
    {
      "number": "202309086215",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2023-09-08",
      "status_date": "2026-06-25",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "g/f: new window on north (front) facade.",
      "source": "sf-building-permits"
    },
    {
      "number": "202308235055",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2023-08-23",
      "status_date": "2023-09-14",
      "estimated_cost": 200000,
      "revised_cost": 200000,
      "description": "1st fl bedroom addition & sitting area on ground fl within (e) envelope for one unit 20th st. 2nd fl bathroom addition, renovation of bedroom at 4145 20th st. eletrical & plumbing as req",
      "source": "sf-building-permits"
    },
    {
      "number": "201506239614",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2015-06-23",
      "status_date": "2026-01-09",
      "estimated_cost": 5000,
      "revised_cost": 0,
      "description": "replace fence and rear stair in kind at back yard.",
      "source": "sf-building-permits"
    },
    {
      "number": "201501276803",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2015-01-27",
      "status_date": "2015-01-27",
      "estimated_cost": 50000,
      "revised_cost": 50000,
      "description": "upgrade main electric service to 100 amp one unit-4147 20th street. new subpanel in garage, remodel kitchen, bathroom, install new washer and dryer hookup in bathroom, convert bathtub to shower, update electrical for kitchen and bathroom. interior remodel in 4147 20th street(lower unit)",
      "source": "sf-building-permits"
    },
    {
      "number": "9809667",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-05-28",
      "status_date": "1999-03-01",
      "estimated_cost": 14500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8906903",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1989-04-26",
      "status_date": "1989-08-01",
      "estimated_cost": 9885,
      "description": "re - roofing",
      "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=20TH&street_type=ST&address_number=4145",
      "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=3603083&$order=closed_roll_year%20DESC&$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=083",
      "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=3603083",
      "retrieved": "2026-07-28"
    },
    {
      "id": "loc-sf-call-1908-06-18",
      "name": "The San Francisco Call, 18 June 1908, p. 19",
      "query": "https://chroniclingamerica.loc.gov/lccn/sn85066387/1908-06-18/ed-1/seq-19/",
      "retrieved": "2026-10-04"
    }
  ],
  "historical_record": [
    {
      "date": "1908-06-18",
      "kind": "building contract",
      "description": "J. A. Davis & Son contracted to put up a two-storey frame building.",
      "source": "loc-sf-call-1908-06-18"
    }
  ]
}