{
  "address": "3718–3720 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3718/",
  "apn": "3604016",
  "block": "3604",
  "lot": "016",
  "eas_baseid": "491325",
  "coordinates": {
    "lat": 37.756569,
    "lng": -122.430671
  },
  "address_range": "3718–3720",
  "street_numbers_on_parcel": [
    "3718",
    "3720"
  ],
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 3,
    "rooms": 10,
    "bathrooms": 6,
    "bedrooms": 5,
    "lot_area_sqft": 2848,
    "building_area_sqft": 3225,
    "use": "Multi-Family Residential",
    "property_class": "Dwellings - Apt 4 units or less",
    "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 3720 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 178502,
    "assessed_improvement_value": 546818
  },
  "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": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "201707202432",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2017-07-20",
      "status_date": "2017-07-21",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "administration permit to clarify that the scope of work on pa #201507030628 were done at 3718 21st street which was assigned under m811387.",
      "source": "sf-building-permits"
    },
    {
      "number": "201707202440",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2017-07-20",
      "status_date": "2026-01-09",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "adminstration permit to change address on pa#201507030638 from 3720 21st street to 3718 21st street for unit legalization.",
      "source": "sf-building-permits"
    },
    {
      "number": "M811387",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2017-07-20",
      "status_date": "2017-07-20",
      "revised_cost": 244,
      "description": "per pa #201507030638s for unit legalization, add address to block 3604, lot 016 as; 3718 21st street",
      "source": "sf-building-permits"
    },
    {
      "number": "201507030638",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2015-07-03",
      "status_date": "2016-07-02",
      "estimated_cost": 3000,
      "revised_cost": 5000,
      "description": "change of use for single family to 2 family dwelling. add additional unit per ordinance #49-14, add stove to the kitchen and additional countertop area.",
      "source": "sf-building-permits"
    },
    {
      "number": "M479367",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2014-04-14",
      "status_date": "2014-04-14",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201403140786",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-03-14",
      "status_date": "2014-04-16",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "interior remodel only - installation of 12\"x12\" sink at bar (den area). all existing basement in other areas to remain.",
      "source": "sf-building-permits"
    },
    {
      "number": "M467787",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2014-03-03",
      "status_date": "2014-03-03",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "201311273065",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-11-27",
      "status_date": "2014-03-06",
      "estimated_cost": 8000,
      "revised_cost": 8000,
      "description": "deck wood repair less than 50% (same configuration)",
      "source": "sf-building-permits"
    },
    {
      "number": "200506235953",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2005-06-23",
      "status_date": "2005-07-18",
      "estimated_cost": 4000,
      "revised_cost": 4000,
      "description": "new fence stucco and patio rebuild.",
      "source": "sf-building-permits"
    },
    {
      "number": "200205227206",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2002-05-22",
      "status_date": "2002-12-31",
      "estimated_cost": 2500,
      "revised_cost": 2500,
      "description": "revie to (e) appln #200008107546 to add 4 prop line windows & to add a skylight",
      "source": "sf-building-permits"
    },
    {
      "number": "200204224576",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2002-04-22",
      "status_date": "2002-08-22",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "rev to 200008107546-reduce height of 2nd flr rear wall roof at the west corner of the roof",
      "source": "sf-building-permits"
    },
    {
      "number": "200203040552",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2002-03-04",
      "status_date": "2002-12-31",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "misc. revision to #200008107546 . revise bathrm, front facade, window schedule . glu -lam beam. prop",
      "source": "sf-building-permits"
    },
    {
      "number": "200008107546",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2000-08-10",
      "status_date": "2002-12-31",
      "estimated_cost": 200000,
      "revised_cost": 300000,
      "description": "3rd floor addition to existing single family residence",
      "source": "sf-building-permits"
    },
    {
      "number": "9805756",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-04-03",
      "status_date": "1999-03-03",
      "estimated_cost": 6400,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8701131",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1987-01-27",
      "status_date": "1987-06-11",
      "estimated_cost": 5000,
      "description": "remodel kitchen, new cabinets, counters, appliances",
      "source": "sf-building-permits"
    },
    {
      "number": "8307786",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1983-08-10",
      "status_date": "1983-09-29",
      "estimated_cost": 1000,
      "description": "extension on existing upper deck",
      "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=21ST&street_type=ST&address_number=3718",
      "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=3604016&$order=closed_roll_year%20DESC&$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=3604&lot=016",
      "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=3604016",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-planning-commission-minutes-2001-01-25",
      "name": "San Francisco City Planning Commission, minutes of the meeting of 25 January 2001",
      "label": "San Francisco City Planning Commission minutes, San Francisco Public Library (Internet Archive)",
      "query": "https://archive.org/details/50minutesofsanfran2001san/page/n84/mode/1up",
      "retrieved": "2026-11-02"
    }
  ],
  "historical_record": [
    {
      "date": "2001-01-25",
      "kind": "planning decision",
      "description": "The City Planning Commission did not take discretionary review and approved the project as approved by staff, a one-story vertical addition to an existing single-family, two-story dwelling unit, 6-0.",
      "source": "sf-planning-commission-minutes-2001-01-25"
    },
    {
      "date": "2001-01-25",
      "kind": "occupancy",
      "description": "The building was an existing single-family, two-story dwelling unit.",
      "source": "sf-planning-commission-minutes-2001-01-25"
    }
  ]
}