{
  "address": "4536 20th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/20th-street/4536/",
  "apn": "2699025",
  "block": "2699",
  "lot": "025",
  "eas_baseid": "344553",
  "coordinates": {
    "lat": 37.757638,
    "lng": -122.438727
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 2,
    "rooms": 10,
    "bathrooms": 2,
    "bedrooms": 4,
    "lot_area_sqft": 1873,
    "building_area_sqft": 1818,
    "basement_area_sqft": 882,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 4536 20TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1154893,
    "assessed_improvement_value": 494953,
    "last_sale_date": "2018-06-28"
  },
  "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": "202201115807",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-01-11",
      "status_date": "2025-03-04",
      "estimated_cost": 20500,
      "revised_cost": 25000,
      "description": "project scope includes an interior remodel to remove an extg kitchen partition and install new cabinets.",
      "source": "sf-building-permits"
    },
    {
      "number": "M1131027",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-08-29",
      "status_date": "2019-08-29",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M1097687",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-06-19",
      "status_date": "2019-06-19",
      "revised_cost": 1,
      "description": "street space only",
      "source": "sf-building-permits"
    },
    {
      "number": "M1065427",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-04-12",
      "status_date": "2019-04-12",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M1036287",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-02-06",
      "status_date": "2019-02-06",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201803305180",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-03-30",
      "status_date": "2019-11-27",
      "estimated_cost": 50000,
      "revised_cost": 60000,
      "description": "addiition of second unit. all work is within interior of lower level to comply with nov 201152910. connect new stiar to exiting rear yard stair",
      "source": "sf-building-permits"
    },
    {
      "number": "201801047884",
      "type": "additions alterations or repairs",
      "status": "withdrawn",
      "filed": "2018-01-04",
      "status_date": "2018-03-30",
      "estimated_cost": 37000,
      "description": "to comply with nov 201152910. 1)legalization of illegal lower level. improvement of extg storage and wet bar. enclosure of extg mechanical room. all work is within interior envelope of bldg. no changes to exiting.",
      "source": "sf-building-permits"
    },
    {
      "number": "M797347",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2017-06-15",
      "status_date": "2017-06-15",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201406107945",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-06-10",
      "status_date": "2014-06-16",
      "estimated_cost": 6200,
      "revised_cost": 6200,
      "description": "replace extg flexible duct work with new flexible ducting in lower mechanical room. replace extg furnace with new in same location.",
      "source": "sf-building-permits"
    },
    {
      "number": "9020596",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-10-09",
      "status_date": "1991-03-06",
      "estimated_cost": 5900,
      "description": "reroofinig.",
      "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=4536",
      "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=2699025&$order=closed_roll_year%20DESC&$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=2699&lot=025",
      "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=2699025",
      "retrieved": "2026-07-28"
    }
  ]
}