{
  "address": "1724 20th Street, San Francisco, CA 94107",
  "path": "/san-francisco/potrero-hill/20th-street/1724/",
  "apn": "4069016",
  "block": "4069",
  "lot": "016",
  "eas_baseid": "367879",
  "coordinates": {
    "lat": 37.760104,
    "lng": -122.398763
  },
  "parcel": {
    "year_built": 1926,
    "units": 1,
    "stories": 3,
    "rooms": 7,
    "bathrooms": 4,
    "bedrooms": 3,
    "lot_area_sqft": 2500,
    "building_area_sqft": 2894,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 10,
    "assessor_neighborhood": "Potrero Hill",
    "analysis_neighborhood": "Potrero Hill",
    "property_location_raw": "0000 1724 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 108834,
    "assessed_improvement_value": 1006069
  },
  "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": "1926",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "200809050870",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-09-05",
      "status_date": "2008-09-11",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew pa# 2006/06/29/5379 for final inspection only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200809050873",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-09-05",
      "status_date": "2008-09-18",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew pa# 2006/04/13/8919 for final inspection only.",
      "source": "sf-building-permits"
    },
    {
      "number": "200710165462",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2007-10-16",
      "status_date": "2026-01-27",
      "description": "as-built for pa no. 200203070843; relocate toilet; remove wall and door at rear",
      "source": "sf-building-permits"
    },
    {
      "number": "200710115102",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2007-10-11",
      "status_date": "2020-01-17",
      "estimated_cost": 1,
      "description": "clarify the legal use from two dwelling units to single family dwelling",
      "source": "sf-building-permits"
    },
    {
      "number": "200710054733",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-10-05",
      "status_date": "2008-09-18",
      "estimated_cost": 100000,
      "revised_cost": 100000,
      "description": "renewal pa 200602074030, 200203070843, 200505233122 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "200710054736",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2007-10-05",
      "status_date": "2008-09-18",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renewal pa 200606295379, 200203070841, 200604138919 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "200705232129",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2007-05-23",
      "status_date": "2007-07-17",
      "estimated_cost": 25000,
      "revised_cost": 25000,
      "description": "install automataic fire sprinklers.",
      "source": "sf-building-permits"
    },
    {
      "number": "M58422",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2007-02-21",
      "status_date": "2007-02-21",
      "revised_cost": 0,
      "description": "streetspace",
      "source": "sf-building-permits"
    },
    {
      "number": "200606295379",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2006-06-29",
      "status_date": "2008-09-18",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revision to front facade ( approved under pa# 2002/03/07/0843 with 6 windows to front facade with 4 windows. (structural changes to smaller moment frame)",
      "source": "sf-building-permits"
    },
    {
      "number": "200604138919",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2006-04-13",
      "status_date": "2008-09-18",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "relocate of lap pool and change of pool size, relocation of water closet per pa 200203070843",
      "source": "sf-building-permits"
    },
    {
      "number": "200602074030",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2006-02-07",
      "status_date": "2008-09-18",
      "estimated_cost": 5000,
      "revised_cost": 8000,
      "description": "revision to previously apprvd permit 200203070843, to upgrade concrete structural design around basement level pool",
      "source": "sf-building-permits"
    },
    {
      "number": "200505233122",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2005-05-23",
      "status_date": "2008-09-18",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "install 3 drilled piers and temporary steel/bracing for exavation temporary shoring",
      "source": "sf-building-permits"
    },
    {
      "number": "200203070843",
      "type": "new construction",
      "status": "expired",
      "filed": "2002-03-07",
      "status_date": "2008-09-18",
      "estimated_cost": 500000,
      "revised_cost": 550000,
      "description": "erect a five story two unit residential bldg",
      "source": "sf-building-permits"
    },
    {
      "number": "200203070841",
      "type": "demolitions",
      "status": "complete",
      "filed": "2002-03-07",
      "status_date": "2008-09-18",
      "description": "demolish 1 dwelling unit, 4 stories",
      "source": "sf-building-permits"
    }
  ],
  "permit_summary": {
    "count_on_file": 18,
    "range": "2002–2008",
    "shown_on_page": 14,
    "note": "4 nominal $1 street-space or sidewalk permits are omitted from the timeline."
  },
  "sources": [
    {
      "id": "sf-eas-addresses",
      "name": "SF Enterprise Addressing System via DataSF",
      "query": "https://data.sfgov.org/resource/3mea-di5p.json?street_name=20TH&street_type=ST&address_number=1724",
      "retrieved": "2026-11-02"
    },
    {
      "id": "sf-assessor-roll",
      "name": "SF Office of the Assessor-Recorder via DataSF (2025 secured roll)",
      "query": "https://data.sfgov.org/resource/wv5m-vpq2.json?parcel_number=4069016&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-11-02"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=4069&lot=016",
      "retrieved": "2026-11-02"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=4069016",
      "retrieved": "2026-11-02"
    },
    {
      "id": "sf-planning-commission-minutes-2003-01-16",
      "name": "San Francisco City Planning Commission, minutes of the meeting of 16 January 2003",
      "label": "San Francisco City Planning Commission minutes, San Francisco Public Library (Internet Archive)",
      "query": "https://archive.org/details/53minutesofsanfran2003san/page/n38/mode/1up",
      "retrieved": "2026-11-02"
    },
    {
      "id": "sf-planning-commission-minutes-2003-02-06",
      "name": "San Francisco City Planning Commission, minutes of the meeting of 6 February 2003",
      "label": "San Francisco City Planning Commission minutes, San Francisco Public Library (Internet Archive)",
      "query": "https://archive.org/details/53minutesofsanfran2003san/page/n76/mode/1up",
      "retrieved": "2026-11-02"
    }
  ],
  "historical_record": [
    {
      "date": "2003-01-16",
      "kind": "occupancy",
      "description": "The property held an existing one-unit, single story over garage residence.",
      "source": "sf-planning-commission-minutes-2003-01-16"
    },
    {
      "date": "2003-02-06",
      "kind": "planning decision",
      "description": "The City Planning Commission did not take discretionary review and approved demolition of an existing one-unit, single story over garage residence at 1724 20th Street.",
      "source": "sf-planning-commission-minutes-2003-02-06"
    }
  ]
}