{
  "address": "41–43 Hartford Street, San Francisco, CA 94114",
  "address_range": "41–43",
  "path": "/san-francisco/castro/hartford-street/41/",
  "hook": "A 1901 two-flat on one parcel spanning both numbers, its chimneys removed in 1995.",
  "apn": "3582032",
  "block": "3582",
  "lot": "032",
  "eas_baseid": "360709",
  "coordinates": {
    "lat": 37.761863,
    "lng": -122.433664
  },
  "parcel": {
    "year_built": 1901,
    "use": "Multi-Family Residential",
    "property_class": "Flats & Duplex",
    "units": 2,
    "stories": 2,
    "rooms": 11,
    "bathrooms": 2,
    "construction_type_code": "D",
    "lot_area_sqft": 3125,
    "building_area_sqft": 3720,
    "lot_depth_ft": 25,
    "zoning": "RH-3",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0043 0041 HARTFORD ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 332226,
    "assessed_improvement_value": 170248,
    "last_sale_date": "1995-08-01"
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "California Register Historic District",
    "yearbuilt": "1901",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Hartford Street Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "No local landmark protection",
    "period_of_significance": "1900-1902",
    "significance_note": "Significant under Criterion 3 for its association with master builder Fernando Nelson, as an early 20th-century Victorian-era residential tract development.",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "201608266178",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2016-08-26",
      "completed": "2016-11-10",
      "estimated_cost": 16000,
      "description": "perform repairs as. termite report #67850, item #3a",
      "source": "sf-building-permits"
    },
    {
      "number": "201208318789",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2012-08-31",
      "estimated_cost": 14250,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9518126",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1995-10-27",
      "completed": "1996-04-18",
      "estimated_cost": 1000,
      "description": "remove 2 chimneys, patch roof aand floor",
      "source": "sf-building-permits"
    }
  ],
  "permits_omitted": {
    "count": 1,
    "reason": "nominal $1 street-space permit",
    "numbers": [
      "M218126"
    ]
  },
  "sources": [
    {
      "id": "sf-eas-addresses",
      "name": "SF Enterprise Addressing System via DataSF",
      "query": "https://data.sfgov.org/resource/3mea-di5p.json?street_name=HARTFORD&street_type=ST&address_number=41",
      "retrieved": "2026-07-27"
    },
    {
      "id": "sf-assessor-roll",
      "name": "SF Office of the Assessor-Recorder via DataSF (2025 secured roll)",
      "query": "https://data.sfgov.org/resource/wv5m-vpq2.json?parcel_number=3582032&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-07-27"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3582&lot=032",
      "retrieved": "2026-07-27"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3582032",
      "retrieved": "2026-07-27"
    },
    {
      "id": "sf-historic-districts",
      "name": "SF Planning Department — Historic Districts via DataSF",
      "query": "https://data.sfgov.org/resource/63x5-g3m4.json?$where=intersects(the_geom,%20%27POINT(-122.4336644344007%2037.76186335730917)%27)",
      "retrieved": "2026-07-27"
    },
    {
      "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",
    "year_built_as_surveyed": "1901-1902",
    "address_as_surveyed": "37-43 Hartford Street",
    "note": "Listed among the houses Fernando Nelson built in Eureka Valley. The statement is reconnaissance-level and says inclusion in it is not a judgement on a building's worthiness for preservation. It records the row as two-flats, and names Nelson's Hartford Street houses as a concentration of developer housing worth studying as a potential historic district."
  },
  "building": {
    "builder": "Fernando Nelson"
  }
}