{
  "address": "3992 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3992/",
  "apn": "3600026",
  "block": "3600",
  "lot": "026",
  "eas_baseid": "361707",
  "coordinates": {
    "lat": 37.758073,
    "lng": -122.430082
  },
  "parcel": {
    "year_built": 1912,
    "units": 1,
    "stories": 1,
    "rooms": 5,
    "bathrooms": 1,
    "lot_area_sqft": 1498,
    "building_area_sqft": 1350,
    "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 3992 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 32551,
    "assessed_improvement_value": 40862
  },
  "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": "1912",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "200509203309",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2005-09-20",
      "status_date": "2005-09-20",
      "estimated_cost": 14000,
      "revised_cost": 14000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8309791",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1983-09-28",
      "status_date": "1983-12-20",
      "estimated_cost": 4200,
      "description": "remove & replace existing stairway",
      "source": "sf-building-permits"
    },
    {
      "number": "8307457",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1983-08-02",
      "status_date": "1984-01-19",
      "estimated_cost": 450,
      "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=3992",
      "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=3600026&$order=closed_roll_year%20DESC&$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=3600&lot=026",
      "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=3600026",
      "retrieved": "2026-07-28"
    },
    {
      "id": "eureka-valley-context-statement",
      "name": "Elaine B. Stiles, Eureka Valley Historic Context Statement, prepared for the Eureka Valley Neighborhood Association, adopted by the Historic Preservation Commission December 20, 2017",
      "query": "http://default.sfplanning.org/Preservation/EurekaValleyHCS/hp_eureka_valley_hcs_HCS_FINAL-122017.pdf",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Eureka Valley Historic Context Statement, adopted 2017",
      "retrieved": "2026-08-14"
    }
  ],
  "historic_survey": {
    "survey": "Eureka Valley Historic Context Statement (2017)",
    "source": "eureka-valley-context-statement",
    "style": "Craftsman",
    "note": "Illustrated in the statement's survey of Eureka Valley property types and architectural styles. The statement is reconnaissance-level and says inclusion in it is not a judgement on a building's worthiness for preservation. It records it as a bungalow."
  }
}