{
  "address": "3271 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3271/",
  "apn": "3612044",
  "block": "3612",
  "lot": "044",
  "eas_baseid": "362605",
  "coordinates": {
    "lat": 37.758694,
    "lng": -122.414068
  },
  "parcel": {
    "year_built": 1904,
    "units": 2,
    "stories": 2,
    "rooms": 11,
    "bathrooms": 2,
    "lot_area_sqft": 2748,
    "building_area_sqft": 2290,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 9,
    "assessor_neighborhood": "Inner Mission",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 3271 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 595254,
    "assessed_improvement_value": 396831,
    "last_sale_date": "2002-08-22"
  },
  "historic_status": {
    "ceqa_status_code": "C",
    "ceqa_status_code_article_10_11": "C",
    "ceqa_status_label": "Not a historical resource",
    "reason": "Historic Survey Result",
    "yearbuilt": "1904",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202301270905",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-01-27",
      "status_date": "2023-03-03",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revision to bpa#201911207745, reduction in of scope of work. deleted: new siding face of house, new entry doors, new fin & handrail @ entry stairs, floor drain in breezeway, raised ceiling 2/f bath, new trim on face of house. deleted work clouded on plans. no structural changes.",
      "source": "sf-building-permits"
    },
    {
      "number": "202212279202",
      "type": "otc alterations permit",
      "status": "withdrawn",
      "filed": "2022-12-27",
      "status_date": "2023-03-14",
      "estimated_cost": 1,
      "revised_cost": 0,
      "description": "revision to pa#201911207745 to reduce scope of work. restoration of house lap siding at front will not to be done at this time",
      "source": "sf-building-permits"
    },
    {
      "number": "202008131684",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-08-13",
      "status_date": "2022-01-20",
      "estimated_cost": 1,
      "revised_cost": 50000,
      "description": "rev to pa201911207745: voluntary foundation replacement of (e) brick foundation.",
      "source": "sf-building-permits"
    },
    {
      "number": "M1210422",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2020-06-13",
      "status_date": "2020-09-01",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "202002265440",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-02-26",
      "status_date": "2020-03-11",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "reference to app#201909232396 to correct address from 3271 20th st to 3271 a 20th st",
      "source": "sf-building-permits"
    },
    {
      "number": "M1196147",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2020-02-19",
      "status_date": "2020-02-19",
      "revised_cost": 244,
      "description": "per cfc #248709 dated 9/19/1961, add address to 2nd unit at block 3612, lot 044 as; 3271a 20th street.",
      "source": "sf-building-permits"
    },
    {
      "number": "201911207745",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-11-20",
      "status_date": "2023-03-20",
      "estimated_cost": 30000,
      "revised_cost": 30000,
      "description": "restore house lap siding at front. repair lap siding at back of the house. new concrete slep on grade at garage. voluntary structural strengthening. replace window in kind",
      "source": "sf-building-permits"
    },
    {
      "number": "201909232396",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-09-23",
      "status_date": "2022-01-20",
      "estimated_cost": 40000,
      "revised_cost": 40000,
      "description": "relocate 1 (e) door & window at back wall of house. install plumbing and electrical for new washer and dryer in (e) closet. repair opening belwer 9e0 skylight in kitchen.",
      "source": "sf-building-permits"
    },
    {
      "number": "201903084829",
      "type": "additions alterations or repairs",
      "status": "withdrawn",
      "filed": "2019-03-08",
      "status_date": "2019-07-10",
      "estimated_cost": 180000,
      "description": "add adu @ (e) ground flr per ord 162-16. demo 67 sf area of non-conforming, legal conditioned space to deck @ rear yard. seismic upgrade per sfebc chapter 4d. fire sprinkler under separate permit.",
      "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=3271",
      "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=3612044&$order=closed_roll_year%20DESC&$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=3612&lot=044",
      "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=3612044",
      "retrieved": "2026-07-31"
    },
    {
      "id": "digitalsf-55123",
      "name": "3271 20th Street, 1974. San Francisco Office of Assessor-Recorder Photographs (SFP 23), San Francisco History Center, San Francisco Public Library.",
      "query": "https://digitalsf.org/record/55123",
      "label": "Assessor-Recorder Photographs (SFP 23), San Francisco Public Library",
      "retrieved": "2026-08-15"
    }
  ],
  "historical_record": [
    {
      "date": "1974-09-24",
      "kind": "photograph",
      "description": "The Office of the Assessor-Recorder photographed the property for tax assessment.",
      "source": "digitalsf-55123"
    }
  ]
}