{
  "address": "3947 18th Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/18th-street/3947/",
  "apn": "3584086",
  "block": "3584",
  "lot": "086",
  "eas_baseid": "360906",
  "coordinates": {
    "lat": 37.760848,
    "lng": -122.431615
  },
  "parcel": {
    "year_built": 1912,
    "units": 6,
    "stories": 3,
    "rooms": 18,
    "bathrooms": 6,
    "lot_area_sqft": 2848,
    "building_area_sqft": 5010,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 5 to 14 Units",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 3947 18TH                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 2067030,
    "assessed_improvement_value": 885870,
    "assessed_fixtures_value": 137,
    "last_sale_date": "2023-11-09"
  },
  "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": "1912",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202111243104",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-11-24",
      "status_date": "2022-03-11",
      "estimated_cost": 85000,
      "revised_cost": 85000,
      "description": "comply with sf wood frame seismic retrofit program soft story sfbc ch 4d per 2019 cebc appendix a4",
      "source": "sf-building-permits"
    },
    {
      "number": "201909060981",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2019-09-06",
      "status_date": "2019-09-06",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "to comply with complaints 201810231, 201920673, handrails and lattice. inside unit item, repair fire proofing, wiring, provide extinguisher, affadavit, smoke detectors,provide viewer, repair to shower/tub, wall furnance restored, viewer, repaird interior door.",
      "source": "sf-building-permits"
    },
    {
      "number": "201907246846",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-07-24",
      "status_date": "2019-07-29",
      "estimated_cost": 1,
      "revised_cost": 1500,
      "description": "adminstrative permit to correct pa #201903296720, complying with nov #201920673, item #2 & #3 which are completed in this permit.",
      "source": "sf-building-permits"
    },
    {
      "number": "201903296720",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-03-29",
      "status_date": "2019-04-03",
      "estimated_cost": 500,
      "revised_cost": 500,
      "description": "comply with nov complaint 201920673 item#3. provide handrails.",
      "source": "sf-building-permits"
    },
    {
      "number": "201901170583",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-01-17",
      "status_date": "2019-04-04",
      "estimated_cost": 2400,
      "revised_cost": 2400,
      "description": "complying with nov #201810231 item #2. repairing damaged fire proofing at garage and ground floor ceilings. maintain fire rating with 5/8\" type \"x\" drywall",
      "source": "sf-building-permits"
    },
    {
      "number": "201712146531",
      "type": "otc alterations permit",
      "status": "filed",
      "filed": "2017-12-14",
      "status_date": "2017-12-14",
      "estimated_cost": 80000,
      "revised_cost": 80000,
      "description": "soft story retrofit per sfebc chapter 4d engineering criteria 2016 cebc appendix a-4. to comply with nov 201719991",
      "source": "sf-building-permits"
    },
    {
      "number": "201507232335",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2015-07-23",
      "status_date": "2015-07-30",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "comply with nov #201489221. drywall walls /ceiling after electric rewiring.",
      "source": "sf-building-permits"
    },
    {
      "number": "M537187",
      "type": "otc alterations permit",
      "status": "filed",
      "filed": "2014-11-14",
      "status_date": "2014-11-14",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201408012762",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2014-08-01",
      "status_date": "2015-08-07",
      "estimated_cost": 7500,
      "revised_cost": 9325,
      "description": "one unit. kitchen & bathroom remodel. changing kitchen cabinets & counter sink only. new tile in bathroom & new lav & low flow to toilet & tub.",
      "source": "sf-building-permits"
    },
    {
      "number": "201305076335",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-05-07",
      "status_date": "2013-05-08",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "administrative permit to show no work was performed on app# 201106208485",
      "source": "sf-building-permits"
    },
    {
      "number": "201211264806",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-11-26",
      "status_date": "2013-01-15",
      "estimated_cost": 3000,
      "revised_cost": 4000,
      "description": "see attached termit report 12906, items 1,2,3,4,5,6,7 repair foundation concrete cap 12\" w/#4 rebar epoxy into existing approx 20 ft",
      "source": "sf-building-permits"
    },
    {
      "number": "201208308644",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-08-30",
      "status_date": "2013-05-06",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "remodel kitchen - new cabinets; remodel bathroom - replace sink, toilet, bath tub. no structural",
      "source": "sf-building-permits"
    },
    {
      "number": "201206182819",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-06-18",
      "status_date": "2013-05-06",
      "estimated_cost": 36000,
      "revised_cost": 36000,
      "description": "paint and remodel apt include one kitchen in two units.",
      "source": "sf-building-permits"
    },
    {
      "number": "201205170709",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-05-17",
      "status_date": "2012-06-18",
      "estimated_cost": 2200,
      "revised_cost": 2200,
      "description": "see attached termit report #12449 item #1: repair dryrot at porch & stairs left side egress, less than 50% step treads, risers, joists, t&g, no effect to egress.",
      "source": "sf-building-permits"
    },
    {
      "number": "201107210682",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-07-21",
      "status_date": "2012-01-19",
      "estimated_cost": 12856,
      "revised_cost": 12856,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "M273375",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2011-07-21",
      "status_date": "2011-07-21",
      "revised_cost": 1,
      "description": "street space permit (e-201012231863)",
      "source": "sf-building-permits"
    },
    {
      "number": "201106208485",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2011-06-20",
      "status_date": "2013-05-08",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "install 42\" railing in front area of roof on the parapet",
      "source": "sf-building-permits"
    },
    {
      "number": "201105045377",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-05-04",
      "status_date": "2013-05-06",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "one unit remodel bathroom & kitchen, remove one wall, new washer, dryer, replace heat, all work on one unit.",
      "source": "sf-building-permits"
    },
    {
      "number": "201104254692",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2011-04-25",
      "status_date": "2013-05-06",
      "estimated_cost": 65000,
      "revised_cost": 65000,
      "description": "remodel 1 kitchen and one bath, remove 1 wall, add washer and dryer. all work in one unit",
      "source": "sf-building-permits"
    },
    {
      "number": "201104224608",
      "type": "additions alterations or repairs",
      "status": "filed",
      "filed": "2011-04-22",
      "status_date": "2011-04-22",
      "estimated_cost": 200000,
      "description": "convert storage to parking install lift parking",
      "source": "sf-building-permits"
    },
    {
      "number": "M38141",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-06-19",
      "status_date": "2006-06-19",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "9211001",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-07-03",
      "status_date": "1992-11-03",
      "estimated_cost": 4000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "8611580",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "1986-09-19",
      "status_date": "1987-05-12",
      "estimated_cost": 1000,
      "description": "to bring into code",
      "source": "sf-building-permits"
    },
    {
      "number": "8602721",
      "type": "additions alterations or repairs",
      "status": "expired",
      "filed": "1986-03-11",
      "status_date": "1986-09-05",
      "estimated_cost": 4000,
      "description": "repair rear stairs guard rail",
      "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=3947",
      "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=3584086&$order=closed_roll_year%20DESC&$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=3584&lot=086",
      "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=3584086",
      "retrieved": "2026-07-28"
    }
  ]
}
