{
  "address": "3936 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3936/",
  "apn": "3600013",
  "block": "3600",
  "lot": "013",
  "eas_baseid": "361693",
  "coordinates": {
    "lat": 37.758284,
    "lng": -122.42888
  },
  "parcel": {
    "year_built": 1907,
    "units": 1,
    "stories": 2,
    "rooms": 7,
    "bathrooms": 2,
    "bedrooms": 3,
    "lot_area_sqft": 2848,
    "building_area_sqft": 1487,
    "basement_area_sqft": 180,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "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 3936 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1048787,
    "assessed_improvement_value": 605530,
    "last_sale_date": "2009-11-24"
  },
  "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": "202205204709",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2022-05-20",
      "status_date": "2022-07-26",
      "estimated_cost": 175000,
      "revised_cost": 175000,
      "description": "in-kind remodeling of 2 bathroom(s) in 2nd fl with 1 shower pan(s).",
      "source": "sf-building-permits"
    },
    {
      "number": "202205194597",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-05-19",
      "status_date": "2024-09-11",
      "estimated_cost": 175000,
      "revised_cost": 175000,
      "description": "construct (n) roof dormer on (e) roof install (n) roofishingles on (e) roof, replace 4 windows in (e) window openings remove (e) bathtub & install (n) bath tub, install (n) bath room vanites, install (n) shower pan in (e) shower refinish (e) wd flrs, replace (e) front porcu flr. with (n) tile",
      "source": "sf-building-permits"
    },
    {
      "number": "201905070029",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2019-05-07",
      "status_date": "2023-09-06",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "alter site. revision to pa# 2015/05/06/5527-s, issued on 12/27/2016. reduction of scope to eliminate construction of 3rd floor. project is: raise house 5'-0\", new 1st floor, new stair from 1st to 3rd with new dormer on west side of roof.",
      "source": "sf-building-permits"
    },
    {
      "number": "201505065527",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2015-05-06",
      "status_date": "2023-09-06",
      "estimated_cost": 375000,
      "revised_cost": 403000,
      "description": "vertical addition. raise house 5'-0\", add 1-car garage, add living space at 1st fl. add bedroom & bath on 3rd fl",
      "source": "sf-building-permits"
    },
    {
      "number": "200912022391",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2009-12-02",
      "status_date": "2013-02-04",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "install approx 12' plywood,framing angles/clis & foundation anchors in crawl space at west side of house. nailing at 3\" oc edge, 12\" oc field. foundation anchors, ufpio's, framing angles, l90's, h10, a33 or equiv.",
      "source": "sf-building-permits"
    },
    {
      "number": "200507218270",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2005-07-21",
      "status_date": "2006-01-05",
      "estimated_cost": 85000,
      "revised_cost": 85000,
      "description": "kitchen & bathroom remodel, new windows. opening in wals. modify spiral stair.",
      "source": "sf-building-permits"
    },
    {
      "number": "200210219509",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2002-10-21",
      "status_date": "2003-02-25",
      "estimated_cost": 1500,
      "revised_cost": 16000,
      "description": "repair <50% in kind no change. replace exsiting deck expand by approximate by 40 s.f",
      "source": "sf-building-permits"
    },
    {
      "number": "200004258133",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2000-04-25",
      "status_date": "2000-06-06",
      "estimated_cost": 8000,
      "revised_cost": 8000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9408603",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1994-06-06",
      "status_date": "1994-09-15",
      "estimated_cost": 8000,
      "description": "install circular stairs, from living to 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=3936",
      "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=3600013&$order=closed_roll_year%20DESC&$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=013",
      "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=3600013",
      "retrieved": "2026-07-28"
    }
  ]
}