{
  "address": "3959 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3959/",
  "apn": "3605060",
  "block": "3605",
  "lot": "060",
  "eas_baseid": "362134",
  "coordinates": {
    "lat": 37.757767,
    "lng": -122.429319
  },
  "parcel": {
    "year_built": 1911,
    "units": 3,
    "stories": 3,
    "rooms": 13,
    "bathrooms": 3,
    "bedrooms": 4,
    "lot_area_sqft": 2850,
    "building_area_sqft": 3827,
    "basement_area_sqft": 315,
    "lot_depth_ft": 14,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "RH-1",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "3961 3959 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1129696,
    "assessed_improvement_value": 753128,
    "last_sale_date": "2002-08-09"
  },
  "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": "1911",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201807305881",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-07-30",
      "status_date": "2018-09-21",
      "estimated_cost": 12500,
      "revised_cost": 12500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "201104214550",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-04-21",
      "status_date": "2011-05-12",
      "estimated_cost": 8000,
      "revised_cost": 8000,
      "description": "remove existing loosed vinyl siding at north side of building, install new hardy plan siding, horizontial siding",
      "source": "sf-building-permits"
    },
    {
      "number": "200903305107",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-03-30",
      "status_date": "2009-04-13",
      "estimated_cost": 8000,
      "revised_cost": 8000,
      "description": "repair back deck less than 50% on 2nd floor only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200602225207",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2006-02-22",
      "status_date": "2013-02-04",
      "estimated_cost": 11863,
      "revised_cost": 11863,
      "description": "replace 6 windows & 4 patio doors, size for size same place & location. back of house not visible",
      "source": "sf-building-permits"
    },
    {
      "number": "200502074926",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2005-02-07",
      "status_date": "2005-03-29",
      "estimated_cost": 9000,
      "revised_cost": 9000,
      "description": "remodel first floor bath",
      "source": "sf-building-permits"
    },
    {
      "number": "200401123840",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-01-12",
      "status_date": "2004-03-09",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "remodel bathroom,replace tile,plumbing fixture & light fixture",
      "source": "sf-building-permits"
    },
    {
      "number": "9414974",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1994-09-22",
      "status_date": "1995-04-27",
      "estimated_cost": 10000,
      "description": "remove ilegal unit in basement",
      "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=3959",
      "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=3605060&$order=closed_roll_year%20DESC&$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=060",
      "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=3605060",
      "retrieved": "2026-07-28"
    }
  ]
}