{
  "address": "3991 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3991/",
  "apn": "3605055C",
  "block": "3605",
  "lot": "055C",
  "eas_baseid": "362129",
  "coordinates": {
    "lat": 37.75777,
    "lng": -122.429926
  },
  "parcel": {
    "year_built": 1916,
    "units": 1,
    "stories": 3,
    "rooms": 10,
    "bathrooms": 2,
    "bedrooms": 2,
    "lot_area_sqft": 2137.5,
    "building_area_sqft": 2372,
    "basement_area_sqft": 662,
    "lot_depth_ft": 85.5,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-1",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 3991 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 2615888,
    "assessed_improvement_value": 1121094,
    "last_sale_date": "2018-10-22"
  },
  "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": "1916",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202409170979",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2024-09-17",
      "status_date": "2025-01-17",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "remove and replace complete 155sf 2nd story deck and 35 sf 3rd story deck with like for like materials in kind. no changes in sf. decks located in rear of house. remove (e) leaking waterproofing mebrane replace with cim 1000 waterproofing membrane . replace (e) 42 in handrails",
      "source": "sf-building-permits"
    },
    {
      "number": "202404190320",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2024-04-19",
      "status_date": "2024-06-25",
      "estimated_cost": 74980,
      "revised_cost": 74980,
      "description": "replace siding on side and back walls of dwelling (not street visible) with fiber cement from wood existing - 1500 sq ft (85 ln ft)",
      "source": "sf-building-permits"
    },
    {
      "number": "202309227211",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-09-22",
      "status_date": "2024-02-08",
      "estimated_cost": 123000,
      "revised_cost": 123000,
      "description": "(e) laundry remodel. new bathroom at basement (e) storage. isolate bathroom exhaust fan.",
      "source": "sf-building-permits"
    },
    {
      "number": "202308184744",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-08-18",
      "status_date": "2024-02-08",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "remodel one bathroom on the 3rd story. in-kind",
      "source": "sf-building-permits"
    },
    {
      "number": "201104154156",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-04-15",
      "status_date": "2011-06-08",
      "estimated_cost": 4500,
      "revised_cost": 4500,
      "description": "bathroom remodel: new tile at tub/shower. new vanity. all fixtures remain in same locations. no walls removed or built. no electrical work.",
      "source": "sf-building-permits"
    },
    {
      "number": "200611208100",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-11-20",
      "status_date": "2006-11-28",
      "estimated_cost": 9000,
      "revised_cost": 9000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200501264004",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2005-01-26",
      "status_date": "2005-01-26",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renewal pa 200306026040 for final inspection renewal pa 200306026040 for final",
      "source": "sf-building-permits"
    },
    {
      "number": "200307088960",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2003-07-08",
      "status_date": "2005-01-11",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "horizontal addition-rear extension on first and second floor and repair existing deck",
      "source": "sf-building-permits"
    },
    {
      "number": "200306026040",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2003-06-02",
      "status_date": "2003-06-02",
      "estimated_cost": 7500,
      "revised_cost": 7500,
      "description": "struct remodel foundation repalcement work @ existing house arch tenant improvement to follow for",
      "source": "sf-building-permits"
    },
    {
      "number": "9504100",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1995-03-23",
      "status_date": "1995-04-05",
      "estimated_cost": 3300,
      "description": "repair fungus damage to framing at bay window",
      "source": "sf-building-permits"
    },
    {
      "number": "8714317",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1987-10-06",
      "status_date": "1988-07-28",
      "estimated_cost": 15000,
      "description": "kitchen remodel, non structural",
      "source": "sf-building-permits"
    },
    {
      "number": "8601979",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1986-02-20",
      "status_date": "1986-03-14",
      "estimated_cost": 450,
      "description": "repair dry rot at rear stairs & deck",
      "source": "sf-building-permits"
    },
    {
      "number": "8501451",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "1985-02-11",
      "status_date": "1985-08-21",
      "estimated_cost": 52000,
      "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=3991",
      "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=3605055C&$order=closed_roll_year%20DESC&$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=3605&lot=055C",
      "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=3605055C",
      "retrieved": "2026-07-28"
    }
  ]
}