{
  "address": "3827–3831 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/3827/",
  "apn": "3606078",
  "block": "3606",
  "lot": "078",
  "eas_baseid": "362210",
  "coordinates": {
    "lat": 37.757942,
    "lng": -122.426442
  },
  "address_range": "3827–3831",
  "street_numbers_on_parcel": [
    "3827",
    "3829",
    "3831"
  ],
  "parcel": {
    "year_built": 1911,
    "units": 2,
    "stories": 3,
    "rooms": 14,
    "bathrooms": 3,
    "bedrooms": 5,
    "lot_area_sqft": 2848,
    "building_area_sqft": 5816,
    "basement_area_sqft": 1167,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "RM-1",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "3831 3827 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 568533,
    "assessed_improvement_value": 571731,
    "last_sale_date": "1997-10-30"
  },
  "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": "202011199269",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-11-19",
      "status_date": "2021-03-22",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "202002194782",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-02-19",
      "status_date": "2020-02-26",
      "estimated_cost": 7000,
      "revised_cost": 7000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "M999109",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2018-10-25",
      "status_date": "2018-10-25",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201609137574",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2016-09-13",
      "status_date": "2016-10-03",
      "estimated_cost": 2800,
      "revised_cost": 2800,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "200906291509",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-06-29",
      "status_date": "2009-10-08",
      "estimated_cost": 4767,
      "revised_cost": 4767,
      "description": "work only on one unit. replace 8 windows into the existing openings. not visible from the street. no structural changes. u factor .67 max.",
      "source": "sf-building-permits"
    },
    {
      "number": "200402025360",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-02-02",
      "status_date": "2005-01-03",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew app #200201167089/200207252375 for final inspection",
      "source": "sf-building-permits"
    },
    {
      "number": "200401164257",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-01-16",
      "status_date": "2004-12-29",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew 200101250610, 200102262968, 200106181756 & 200203111121 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "M24237",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2003-07-09",
      "status_date": "2003-07-09",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "200207252375",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2002-07-25",
      "status_date": "2002-12-24",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "rev#200201167089s the front wall of bldg is shown as repaired on the original permit. this wall will",
      "source": "sf-building-permits"
    },
    {
      "number": "200203111121",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2002-03-11",
      "status_date": "2002-04-17",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "interior work revision to 2001/06/18/1756. to correct code compliance in garage height clearence.",
      "source": "sf-building-permits"
    },
    {
      "number": "200201167089",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2002-01-16",
      "status_date": "2002-09-27",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "interior alterations with no expansion of extg bldg/minor changes to wndws",
      "source": "sf-building-permits"
    },
    {
      "number": "200106181756",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2001-06-18",
      "status_date": "2002-06-26",
      "estimated_cost": 100000,
      "revised_cost": 100000,
      "description": "interior renovation/foundation work caused by wood rot",
      "source": "sf-building-permits"
    },
    {
      "number": "200102262968",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-02-26",
      "status_date": "2001-06-26",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "demolish extg walls on 1st 2nd floor",
      "source": "sf-building-permits"
    },
    {
      "number": "200101250610",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2001-01-25",
      "status_date": "2002-01-25",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "replacement of all windows & doors.",
      "source": "sf-building-permits"
    },
    {
      "number": "9825477",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1998-12-14",
      "status_date": "1999-04-15",
      "estimated_cost": 1100,
      "description": "replace kitchen cabinets, counters, sink, add electrical o/l",
      "source": "sf-building-permits"
    },
    {
      "number": "9710285",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1997-06-05",
      "status_date": "1997-09-29",
      "estimated_cost": 500,
      "description": "convert existing 3 unit deilling into 2 unit dwilling",
      "source": "sf-building-permits"
    },
    {
      "number": "9707574",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1997-04-28",
      "status_date": "1997-08-15",
      "estimated_cost": 8000,
      "description": "patch and repair existing 3rd floor deck and existing stair",
      "source": "sf-building-permits"
    },
    {
      "number": "9701006",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1997-01-17",
      "status_date": "1997-09-29",
      "estimated_cost": 8000,
      "description": "interior remodel remove lowered ceilings on 2nf fl",
      "source": "sf-building-permits"
    },
    {
      "number": "9018882",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-09-17",
      "status_date": "1991-01-24",
      "estimated_cost": 4500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8312271",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1983-12-02",
      "status_date": "1986-03-04",
      "estimated_cost": 1185,
      "description": "bring into code as requiired by dahi",
      "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=3827",
      "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=3606078&$order=closed_roll_year%20DESC&$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=3606&lot=078",
      "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=3606078",
      "retrieved": "2026-07-28"
    }
  ]
}