{
  "address": "4431–4433 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4431/",
  "apn": "2750039",
  "block": "2750",
  "lot": "039",
  "eas_baseid": "345479",
  "coordinates": {
    "lat": 37.757296,
    "lng": -122.437532
  },
  "address_range": "4431–4433",
  "street_numbers_on_parcel": [
    "4431",
    "4433"
  ],
  "parcel": {
    "year_built": 1900,
    "units": 4,
    "stories": 3,
    "rooms": 13,
    "bathrooms": 5,
    "bedrooms": 5,
    "lot_area_sqft": 2435,
    "building_area_sqft": 2622,
    "use": "Multi-Family Residential",
    "property_class": "TIC Bldg 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": "4433 4431 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1887408,
    "assessed_improvement_value": 1258272,
    "last_sale_date": "2007-05-18"
  },
  "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": "1891",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202409231408",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2024-09-23",
      "status_date": "2024-10-28",
      "estimated_cost": 16000,
      "revised_cost": 16000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "202303033012",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-03-03",
      "status_date": "2023-05-12",
      "estimated_cost": 8400,
      "revised_cost": 19766,
      "description": "installation of a new automatic fire alarm system. new facu, wireless comm, 2 pulls, 1 smoke, 9 lf sounders and 1 module. partially sprinklered building.",
      "source": "sf-building-permits"
    },
    {
      "number": "202302152026",
      "type": "otc alterations permit",
      "status": "withdrawn",
      "filed": "2023-02-15",
      "status_date": "2023-07-11",
      "estimated_cost": 4000,
      "revised_cost": 0,
      "description": "installation of a new sprinkler monitoring system. reference sprinkler 202106142342.",
      "source": "sf-building-permits"
    },
    {
      "number": "M1227287",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2022-03-01",
      "status_date": "2022-03-02",
      "revised_cost": 0,
      "description": "per pa #202104279444, 1st floor adu, and pa #202001272850, 2fl uda, add address to apn 2750/039 as; 4431a, 4431b 20th street.",
      "source": "sf-building-permits"
    },
    {
      "number": "202111162499",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-11-16",
      "status_date": "2023-05-10",
      "estimated_cost": 1,
      "revised_cost": 25000,
      "description": "revision pa 202001272850, seismic strengthening due to change of use per sfebc section 506.4.3.",
      "source": "sf-building-permits"
    },
    {
      "number": "202106142342",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-06-14",
      "status_date": "2023-05-12",
      "estimated_cost": 9000,
      "revised_cost": 9000,
      "description": "install (12) sprinklers throughout ground floor per nfpa 13-r, underground per nfpa 24. ba # 202-0127-2850 / 2021-0427-9444",
      "source": "sf-building-permits"
    },
    {
      "number": "202104279444",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2021-04-27",
      "status_date": "2023-05-10",
      "estimated_cost": 79730,
      "revised_cost": 79730,
      "description": "new first floor adu at existing garage.",
      "source": "sf-building-permits"
    },
    {
      "number": "202010277505",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-10-27",
      "status_date": "2022-04-01",
      "estimated_cost": 125000,
      "revised_cost": 160000,
      "description": "one unit 2nd flr & one unit 3rd flr: kitchen remodel, exisitng fire place to be removed, remodel bathroom.",
      "source": "sf-building-permits"
    },
    {
      "number": "202001272850",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2020-01-27",
      "status_date": "2023-05-10",
      "estimated_cost": 103500,
      "revised_cost": 103500,
      "description": "legalization of udu per ord# 43-14. to comply w/ nov 201905747, interior remodel of space to include new living room. kitchen area, office area, bath, laudry closet, two bedrooms and closets.",
      "source": "sf-building-permits"
    },
    {
      "number": "201306149618",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-06-14",
      "status_date": "2013-06-25",
      "estimated_cost": 11900,
      "revised_cost": 11900,
      "description": "perform repairs as per termite report # 60984- itmes # 1a-5a-5b-5c-5d-5l-5m & report # 60984-s1 items # 2c-2d-5o",
      "source": "sf-building-permits"
    },
    {
      "number": "201303263098",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-03-26",
      "status_date": "2013-04-23",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200803137015",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2008-03-13",
      "status_date": "2008-03-13",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew pa# 2006/03/31/8038 for final inspection only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200802275724",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-02-27",
      "status_date": "2008-03-13",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "sheetrock and insulate part of garage space 240 sq ft. replace rotting leaking interior door to garage (double doors). bid comp #200844256.",
      "source": "sf-building-permits"
    },
    {
      "number": "200603318038",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-03-31",
      "status_date": "2006-03-31",
      "estimated_cost": 22500,
      "revised_cost": 1,
      "description": "renewal pa 200508160371, 200509011896 & 200509142846 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "200509142846",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2005-09-14",
      "status_date": "2005-09-21",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "new deck & doors at castern lightwell.",
      "source": "sf-building-permits"
    },
    {
      "number": "200509011896",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2005-09-01",
      "status_date": "2005-09-01",
      "estimated_cost": 20000,
      "revised_cost": 10000,
      "description": "add 3/4 bathroom @ existing closet center bedroom remove 2 brick chimneys @ lv.room and kitchen. c",
      "source": "sf-building-permits"
    },
    {
      "number": "200508160371",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2005-08-16",
      "status_date": "2005-08-16",
      "estimated_cost": 2500,
      "revised_cost": 2500,
      "description": "interior bathroom remodelling / rearrange fixtures",
      "source": "sf-building-permits"
    },
    {
      "number": "9600456",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1996-01-10",
      "status_date": "1997-05-27",
      "estimated_cost": 3000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8917305",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1989-09-18",
      "status_date": "1989-11-07",
      "estimated_cost": 800,
      "revised_cost": 0,
      "description": "repair front stairs & landing",
      "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=4431",
      "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=2750039&$order=closed_roll_year%20DESC&$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=2750&lot=039",
      "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=2750039",
      "retrieved": "2026-07-28"
    }
  ]
}