{
  "address": "3635 20th Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/20th-street/3635/",
  "apn": "3608069",
  "block": "3608",
  "lot": "069",
  "eas_baseid": "362349",
  "coordinates": {
    "lat": 37.75821,
    "lng": -122.422029
  },
  "parcel": {
    "year_built": 1900,
    "stories": 2,
    "rooms": 10,
    "bathrooms": 3,
    "bedrooms": 6,
    "lot_area_sqft": 5749,
    "building_area_sqft": 4000,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "NA",
    "zoning": "RH-3",
    "supervisor_district": 9,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 3635 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 6732847,
    "assessed_improvement_value": 2885504,
    "last_sale_date": "2015-11-04"
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A*",
    "ceqa_status_label": "Historic resource",
    "reason": "Article 10 Historic District, California Register Historic District, Historic Survey Result",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": true,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Liberty Hill Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "Article 10 historic district",
    "local_landmark_protection": true,
    "period_of_significance": "1860s–1906",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "200609212961",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2006-09-21",
      "status_date": "2006-10-26",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew permit app#200409154246s, & #200505091835 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "200605302741",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-05-30",
      "status_date": "2006-05-30",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew pa#200409154246 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "M36759",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-03-17",
      "status_date": "2006-03-17",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "200505091835",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2005-05-09",
      "status_date": "2006-01-06",
      "estimated_cost": 4000,
      "revised_cost": 21000,
      "description": "replacement of exist windows and install of new windows per plans. no other work under this application.",
      "source": "sf-building-permits"
    },
    {
      "number": "200409154246",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "2004-09-15",
      "status_date": "2006-10-26",
      "estimated_cost": 1,
      "revised_cost": 250000,
      "description": "proposed merger of 2 units on 1st & 2nd floors into single family residence; no exterior work.",
      "source": "sf-building-permits"
    },
    {
      "number": "M20059",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2002-05-03",
      "status_date": "2002-05-03",
      "revised_cost": 7500,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "200203252271",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2002-03-25",
      "status_date": "2002-06-06",
      "estimated_cost": 7500,
      "revised_cost": 7500,
      "description": "install rear yard retaining wall as per engineered plan",
      "source": "sf-building-permits"
    },
    {
      "number": "9911127",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1999-06-07",
      "status_date": "1999-06-16",
      "estimated_cost": 8000,
      "description": "install 1/2 inch plywood,install plywood,install shingles,",
      "source": "sf-building-permits"
    },
    {
      "number": "9901612",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1999-01-26",
      "status_date": "1999-03-17",
      "estimated_cost": 11500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9824532",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1998-12-01",
      "status_date": "2002-03-22",
      "estimated_cost": 9000,
      "description": "perform various carpentry repairs:repair dryrot bannister",
      "source": "sf-building-permits"
    },
    {
      "number": "9822516",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-11-02",
      "status_date": "1999-06-14",
      "estimated_cost": 7000,
      "description": "replace 8 windows same size not visible with vinyl windows",
      "source": "sf-building-permits"
    },
    {
      "number": "9221293",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-12-09",
      "status_date": "1993-04-09",
      "estimated_cost": 1,
      "description": "renewal & for final inspection under appl #9123287",
      "source": "sf-building-permits"
    },
    {
      "number": "9221294",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-12-09",
      "status_date": "1993-04-09",
      "estimated_cost": 3000,
      "description": "repair dryrot at rear wall,raise foundation as necessary",
      "source": "sf-building-permits"
    },
    {
      "number": "9221195",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-12-07",
      "status_date": "1993-04-07",
      "estimated_cost": 4160,
      "description": "insulate & replace sheetrock on 7 walls in 3 unoccupied rms",
      "source": "sf-building-permits"
    },
    {
      "number": "9218630",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-10-26",
      "status_date": "1993-09-13",
      "estimated_cost": 3500,
      "description": "reroofing.",
      "source": "sf-building-permits"
    },
    {
      "number": "9200985",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-01-21",
      "status_date": "1992-12-11",
      "estimated_cost": 6000,
      "description": "kitchen remodel",
      "source": "sf-building-permits"
    },
    {
      "number": "9123287",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1991-12-09",
      "status_date": "1992-12-11",
      "estimated_cost": 6000,
      "description": "replace 20 ln ft of prop line wall to eliminate dry rot",
      "source": "sf-building-permits"
    },
    {
      "number": "9118547",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1991-10-02",
      "status_date": "1992-12-11",
      "estimated_cost": 8000,
      "description": "repairf/replace sheet rock - kitchen & bathroom",
      "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=3635",
      "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=3608069&$order=closed_roll_year%20DESC&$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=3608&lot=069",
      "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=3608069",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-historic-districts",
      "name": "SF Planning Department — Historic Districts via DataSF",
      "query": "https://data.sfgov.org/resource/63x5-g3m4.json?$where=intersects(the_geom,%20%27POINT(-122.42202895396395%2037.75821022634961)%27)",
      "retrieved": "2026-07-31"
    }
  ]
}