{
  "address": "3945 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3945/",
  "apn": "3605063",
  "block": "3605",
  "lot": "063",
  "eas_baseid": "362137",
  "coordinates": {
    "lat": 37.757783,
    "lng": -122.42906
  },
  "parcel": {
    "year_built": 1960,
    "units": 6,
    "stories": 2,
    "rooms": 18,
    "bathrooms": 6,
    "bedrooms": 6,
    "lot_area_sqft": 2848,
    "building_area_sqft": 4438,
    "basement_area_sqft": 2219,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 5 to 14 Units",
    "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 3945 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 2143545,
    "assessed_improvement_value": 918660,
    "last_sale_date": "2020-02-21"
  },
  "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": "1960",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202306200379",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2023-06-20",
      "status_date": "2023-11-08",
      "estimated_cost": 18970,
      "revised_cost": 29279,
      "description": "fire alarm system replacement & add 12 lf horns to meet sffc sec 1103.7.6.1 to meet nfpa 72 current codes. add wireless comm, 1 module, 4 smokes, 3 pulls, 1 heat detector, 4 horn/strobes in a non sprinklered building.",
      "source": "sf-building-permits"
    },
    {
      "number": "201708154829",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2017-08-15",
      "status_date": "2018-06-25",
      "estimated_cost": 35000,
      "revised_cost": 35000,
      "description": "compliance with mandatory seismic retofit program per 2016 sfebc chapter 4d & 2016 cebc appx a4.",
      "source": "sf-building-permits"
    },
    {
      "number": "200906039643",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-06-03",
      "status_date": "2009-07-29",
      "estimated_cost": 26000,
      "revised_cost": 26000,
      "description": "work on one unit. new kitchen cabinet, new shower, toilet and sink. new updated electrical panel. add s lights (can light in kitchen) plumbing toilet + sink (bathroom). new tile floor + carpet.",
      "source": "sf-building-permits"
    },
    {
      "number": "200505122258",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2005-05-12",
      "status_date": "2005-07-29",
      "estimated_cost": 45000,
      "revised_cost": 45000,
      "description": "fire repair (no framing)new electrical plumbing fixtures,dry rot in garage,10 new joists & sister of",
      "source": "sf-building-permits"
    },
    {
      "number": "9515476",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1995-09-20",
      "status_date": "1996-05-03",
      "estimated_cost": 13000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8610622",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1986-08-28",
      "status_date": "1986-11-21",
      "estimated_cost": 800,
      "description": "to bring into code",
      "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=3945",
      "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=3605063&$order=closed_roll_year%20DESC&$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=063",
      "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=3605063",
      "retrieved": "2026-07-28"
    }
  ]
}