{
  "address": "4638–4640 18th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/18th-street/4638/",
  "apn": "2658013",
  "block": "2658",
  "lot": "013",
  "eas_baseid": "343566",
  "coordinates": {
    "lat": 37.760668,
    "lng": -122.442028
  },
  "address_range": "4638–4640",
  "street_numbers_on_parcel": [
    "4638",
    "4640"
  ],
  "parcel": {
    "year_built": 1902,
    "units": 2,
    "stories": 2,
    "rooms": 9,
    "bathrooms": 2,
    "lot_area_sqft": 2191,
    "building_area_sqft": 2128,
    "use": "Multi-Family Residential",
    "property_class": "TIC Bldg 4 units or less",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "4640 4638 18TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 522288,
    "assessed_improvement_value": 383124,
    "last_sale_date": "2007-02-08"
  },
  "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": "1902",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "200912042667",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-12-04",
      "status_date": "2010-03-01",
      "estimated_cost": 28800,
      "revised_cost": 28800,
      "description": "demolish some interior walls, cabinets & appliances in (e) kitchen & bathrooms as shown. replace with new cabinets, appliances, finishes. add rear window to nook",
      "source": "sf-building-permits"
    },
    {
      "number": "M184746",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2009-11-20",
      "status_date": "2009-11-20",
      "revised_cost": 0,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "200901260768",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-01-26",
      "status_date": "2009-04-23",
      "estimated_cost": 13800,
      "revised_cost": 25000,
      "description": "demolish some interior walls, cabinets & appliances in existing kitchen as shown in plans & replace with new kitchen cabinets and new relocated appliances; lighting & finish upgrades. structural strengthening to include a shear wall at popout. elect/plumbing on separate permit.",
      "source": "sf-building-permits"
    },
    {
      "number": "200804038723",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-04-03",
      "status_date": "2008-05-01",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "revision to app # 200802144802. remove (e) 2 x 4 window. new glass block.16 in x 64 in approx",
      "source": "sf-building-permits"
    },
    {
      "number": "200803187427",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2008-03-18",
      "status_date": "2008-03-19",
      "estimated_cost": 8200,
      "revised_cost": 8200,
      "description": "reroofing.",
      "source": "sf-building-permits"
    },
    {
      "number": "200803187429",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-03-18",
      "status_date": "2008-03-24",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "install 1/2 plywood over slope area at roof.",
      "source": "sf-building-permits"
    },
    {
      "number": "200802144802",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2008-02-14",
      "status_date": "2008-05-01",
      "estimated_cost": 15000,
      "revised_cost": 15000,
      "description": "remodel (e) bathroom adding new plumbing and electrical fixtures and new tile.",
      "source": "sf-building-permits"
    },
    {
      "number": "200503258465",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2005-03-25",
      "status_date": "2005-05-12",
      "estimated_cost": 12970,
      "revised_cost": 12970,
      "description": "install 19 replacement windows: 9 front windows to be wood in kind, wood double hung",
      "source": "sf-building-permits"
    },
    {
      "number": "9217522",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-10-07",
      "status_date": "1993-07-06",
      "estimated_cost": 3000,
      "description": "eliminate 35 of dry rot at west wall by removing sill plate",
      "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=4638",
      "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=2658013&$order=closed_roll_year%20DESC&$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=2658&lot=013",
      "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=2658013",
      "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": {
    "dcp_1976_survey": "Rated 1 of 5",
    "apn_as_surveyed": "block 2658, lot 13",
    "style": "Flats",
    "survey": "Corbett Heights Historic Context Statement (2017)",
    "source": "corbett-heights-context-statement",
    "note": "The 1976 city architectural survey rated buildings 0 to 5, 5 highest, and was never adopted as a register of historic resources."
  }
}