{
  "address": "3951–3953 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3951/",
  "apn": "3605062",
  "block": "3605",
  "lot": "062",
  "eas_baseid": "362136",
  "coordinates": {
    "lat": 37.757777,
    "lng": -122.429147
  },
  "address_range": "3951–3953",
  "street_numbers_on_parcel": [
    "3951",
    "3953"
  ],
  "parcel": {
    "year_built": 1907,
    "units": 2,
    "stories": 2,
    "rooms": 8,
    "bathrooms": 2,
    "bedrooms": 2,
    "lot_area_sqft": 2850,
    "building_area_sqft": 1650,
    "lot_depth_ft": 14,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 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": "3953 3951 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 152296,
    "assessed_improvement_value": 85254
  },
  "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": "1907",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201410300313",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-10-30",
      "status_date": "2015-02-11",
      "estimated_cost": 9000,
      "revised_cost": 9000,
      "description": "to comply nov#201493258. repair in-kind back porches & stairs, less than 50%.",
      "source": "sf-building-permits"
    },
    {
      "number": "201106299137",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-06-29",
      "status_date": "2011-07-11",
      "estimated_cost": 4300,
      "revised_cost": 4300,
      "description": "remove existing asphalt shingle & install 1/2 inch plywood.",
      "source": "sf-building-permits"
    },
    {
      "number": "201106299138",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-06-29",
      "status_date": "2011-08-30",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200205297670",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2002-05-29",
      "status_date": "2002-06-05",
      "estimated_cost": 600,
      "revised_cost": 600,
      "description": "repair rear deck & stairs to correct violation",
      "source": "sf-building-permits"
    },
    {
      "number": "8308769",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1983-09-06",
      "status_date": "1986-03-04",
      "estimated_cost": 1695,
      "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=3951",
      "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=3605062&$order=closed_roll_year%20DESC&$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=062",
      "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=3605062",
      "retrieved": "2026-07-28"
    }
  ]
}