{
  "address": "3173 21st Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/21st-street/3173/",
  "apn": "3615031B",
  "block": "3615",
  "lot": "031B",
  "eas_baseid": "362791",
  "coordinates": {
    "lat": 37.756897,
    "lng": -122.418262
  },
  "parcel": {
    "year_built": 1900,
    "units": 4,
    "stories": 2,
    "rooms": 13,
    "bathrooms": 3,
    "bedrooms": 5,
    "lot_area_sqft": 2112.5,
    "building_area_sqft": 2350,
    "basement_area_sqft": 365,
    "lot_depth_ft": 65,
    "use": "Multi-Family Residential",
    "property_class": "Flat & Store 4 units or less",
    "construction_type_code": "D",
    "zoning": "NC-3",
    "supervisor_district": 9,
    "assessor_neighborhood": "Inner Mission",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 3173 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 382807,
    "assessed_improvement_value": 332013,
    "last_sale_date": "1988-02-08"
  },
  "historic_status": {
    "ceqa_status_code": "B",
    "ceqa_status_code_article_10_11": "B",
    "ceqa_status_label": "Unevaluated",
    "reason": "Historic Survey Result and 45 years or older",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202601164029",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2026-01-16",
      "status_date": "2026-01-16",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "reroof with hot works - tear off (e) roofing and replace with (n) modified bitumen.",
      "source": "sf-building-permits"
    },
    {
      "number": "202210184584",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-10-18",
      "status_date": "2023-02-15",
      "estimated_cost": 40000,
      "revised_cost": 40000,
      "description": "remodel (e) tenant space and prepare vanilla shell for future tenants; remodel upgrade (e) all gender restroom; new lightwell; instll door controllwer @ front entrance",
      "source": "sf-building-permits"
    },
    {
      "number": "202010156554",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2020-10-15",
      "status_date": "2022-03-02",
      "estimated_cost": 60000,
      "description": "add an adu to 1st floor.",
      "source": "sf-building-permits"
    },
    {
      "number": "201802131115",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2018-02-13",
      "status_date": "2018-11-21",
      "estimated_cost": 80000,
      "revised_cost": 110000,
      "description": "convert existing garage area to a (n) retail store at 1st flr. elect & mech & sprinklers design under separate permit.",
      "source": "sf-building-permits"
    },
    {
      "number": "201605127255",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2016-05-12",
      "status_date": "2016-08-18",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "one unit: work on 3rd floor only. remodeling extg kitchen. change extg toilet to bathroom and enlarge extg bedroom at front of bldg. new furnace.",
      "source": "sf-building-permits"
    },
    {
      "number": "201201182449",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-01-18",
      "status_date": "2012-04-10",
      "estimated_cost": 6600,
      "revised_cost": 6600,
      "description": "repair fire damage to 3rd floor rear deck, exterior siding.",
      "source": "sf-building-permits"
    },
    {
      "number": "201004019476",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-04-01",
      "status_date": "2010-04-05",
      "estimated_cost": 128,
      "revised_cost": 500,
      "description": "replace bathroom window, one unit",
      "source": "sf-building-permits"
    },
    {
      "number": "201003158204",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-03-15",
      "status_date": "2010-04-16",
      "estimated_cost": 1500,
      "revised_cost": 1500,
      "description": "one unit: open wall to repair dryrot in bathroom. repair dryrot on window frames. paint bath, 1 bedroom with mildewcide paint",
      "source": "sf-building-permits"
    },
    {
      "number": "200306036104",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-06-03",
      "status_date": "2003-06-09",
      "estimated_cost": 3500,
      "revised_cost": 3500,
      "description": "se corner of building cap foundation approx 10' replace dryrot framing in kind. cove rustic siding.",
      "source": "sf-building-permits"
    },
    {
      "number": "9519418",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1995-11-15",
      "status_date": "1996-03-29",
      "estimated_cost": 3800,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8912832",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1989-07-26",
      "status_date": "1990-04-05",
      "estimated_cost": 8000,
      "description": "remove illegal units, repair stairs & handrail",
      "source": "sf-building-permits"
    },
    {
      "number": "8312433",
      "type": "sign - erect",
      "status": "complete",
      "filed": "1983-12-05",
      "status_date": "1984-05-23",
      "estimated_cost": 850,
      "description": "erect sign",
      "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=3173",
      "retrieved": "2026-07-31"
    },
    {
      "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=3615031B&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3615&lot=031B",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3615031B",
      "retrieved": "2026-07-31"
    },
    {
      "id": "neighborhood-commercial-context-statement",
      "name": "San Francisco Planning Department (Mary Brown and Susan Parks), Neighborhood Commercial Buildings, 1865-1965, Historic Context Statement, adopted November 2, 2022",
      "query": "https://citypln-m-extnl.sfgov.org/SharedLinks.aspx?accesskey=6e02d03c979da663645a63b156e861fca44d7f96ecca9ad8192c0828493bf7fe&VaultGUID=A4A7DACD-B0DC-4322-BD29-F6F07103C6E0",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Neighborhood Commercial Buildings Historic Context Statement, adopted 2022",
      "retrieved": "2026-08-27"
    }
  ],
  "historical_record": [
    {
      "date": "1957",
      "kind": "alteration",
      "description": "Built about 1928 as a detached garage and converted in 1957 into an office; it later held a beauty salon.",
      "source": "neighborhood-commercial-context-statement"
    }
  ]
}