{
  "address": "4579–4581 18th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/18th-street/4579/",
  "apn": "2691030",
  "block": "2691",
  "lot": "030",
  "eas_baseid": "344269",
  "coordinates": {
    "lat": 37.760263,
    "lng": -122.441095
  },
  "address_range": "4579–4581",
  "street_numbers_on_parcel": [
    "4579",
    "4581"
  ],
  "parcel": {
    "year_built": 1900,
    "units": 2,
    "stories": 2,
    "rooms": 9,
    "bathrooms": 2,
    "lot_area_sqft": 3023,
    "building_area_sqft": 2284,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "4581 4579 18TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 964081,
    "assessed_improvement_value": 413173,
    "last_sale_date": "2011-06-24"
  },
  "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": "201401307412",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2014-01-30",
      "status_date": "2014-01-30",
      "estimated_cost": 3000,
      "revised_cost": 3000,
      "description": "replace 5 windows, like for like in size and location, windows not visible from street",
      "source": "sf-building-permits"
    },
    {
      "number": "201107190573",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2011-07-19",
      "status_date": "2011-07-19",
      "estimated_cost": 10000,
      "revised_cost": 18000,
      "description": "remodel existing bathroom and kitchen. change cabinets and countertops and sinks",
      "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=18TH&street_type=ST&address_number=4579",
      "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=2691030&$order=closed_roll_year%20DESC&$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=2691&lot=030",
      "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=2691030",
      "retrieved": "2026-07-28"
    },
    {
      "id": "corbett-heights-context-statement",
      "name": "Michael R. Corbett, Corbett Heights, San Francisco (Western Part of Eureka Valley) Historic Context Statement, prepared for Corbett Heights Neighbors and funded by the Historic Preservation Fund Committee, adopted by the San Francisco Historic Preservation Commission 16 August 2017 (Motion No. 0314, Case No. 2015-006003SRV)",
      "query": "http://default.sfplanning.org/Preservation/CorbettHeightsHCS/hp_corbett_hcs_HCS_FINAL-081617.pdf",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Corbett Heights Historic Context Statement, adopted 2017",
      "retrieved": "2026-08-13"
    }
  ],
  "historic_survey": {
    "style": "Stick-Eastlake",
    "year_built_as_surveyed": 1885,
    "survey": "Corbett Heights Historic Context Statement (2017)",
    "source": "corbett-heights-context-statement",
    "note": "Listed among the properties the statement puts forward as meriting further study; it is a context statement rather than a survey, and says the list is conservative rather than exhaustive."
  }
}