{
  "address": "4226–4228 18th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/18th-street/4226/",
  "apn": "2648018",
  "block": "2648",
  "lot": "018",
  "eas_baseid": "343231",
  "coordinates": {
    "lat": 37.760983,
    "lng": -122.436624
  },
  "address_range": "4226–4228",
  "street_numbers_on_parcel": [
    "4226",
    "4228"
  ],
  "parcel": {
    "year_built": 1904,
    "units": 2,
    "stories": 2,
    "rooms": 11,
    "bathrooms": 2,
    "lot_area_sqft": 1875,
    "building_area_sqft": 2650,
    "lot_depth_ft": 75,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "construction_type_code": "D",
    "zoning": "CASTRO",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "4228 4226 18TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 215201,
    "assessed_improvement_value": 215201
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "California Register Historic District, Historic Survey Result",
    "yearbuilt": "1904",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "L. Arthur 18th Street Flats Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "No local landmark protection",
    "local_landmark_protection": false,
    "period_of_significance": "1904",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "200004258156",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2000-04-25",
      "status_date": "2000-06-08",
      "estimated_cost": 11500,
      "revised_cost": 11500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8205877",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1982-07-16",
      "status_date": "1983-03-04",
      "estimated_cost": 6200,
      "description": "bldg use: flats",
      "source": "sf-building-permits"
    },
    {
      "number": "8202155",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "1982-03-23",
      "status_date": "1982-10-14",
      "estimated_cost": 15000,
      "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=4226",
      "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=2648018&$order=closed_roll_year%20DESC&$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=2648&lot=018",
      "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=2648018",
      "retrieved": "2026-07-28"
    },
    {
      "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(-122.43662419830305%2037.76098309242734)%27)",
      "retrieved": "2026-07-28"
    },
    {
      "id": "eureka-valley-context-statement",
      "name": "Elaine B. Stiles, Eureka Valley Historic Context Statement, prepared for the Eureka Valley Neighborhood Association, adopted by the Historic Preservation Commission December 20, 2017",
      "query": "http://default.sfplanning.org/Preservation/EurekaValleyHCS/hp_eureka_valley_hcs_HCS_FINAL-122017.pdf",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Eureka Valley Historic Context Statement, adopted 2017",
      "retrieved": "2026-08-14"
    }
  ],
  "historic_survey": {
    "survey": "Eureka Valley Historic Context Statement (2017)",
    "source": "eureka-valley-context-statement",
    "style": "Queen Anne",
    "note": "Illustrated in the statement's survey of Eureka Valley property types and architectural styles. The statement is reconnaissance-level and says inclusion in it is not a judgement on a building's worthiness for preservation. It records it as a two-flat on the end-gable dwelling form, now in commercial use."
  }
}