{
  "address": "557 Duboce Avenue, San Francisco, CA 94117",
  "path": "/san-francisco/castro/duboce-avenue/557/",
  "apn": "3538057",
  "block": "3538",
  "lot": "057",
  "eas_baseid": "358620",
  "coordinates": {
    "lat": 37.768995,
    "lng": -122.432678
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 3,
    "rooms": 9,
    "bathrooms": 1,
    "lot_area_sqft": 2500,
    "building_area_sqft": 1983,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-3",
    "supervisor_district": 8,
    "assessor_neighborhood": "Duboce Triangle",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "0000 0557 DUBOCE              AV0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 473451,
    "assessed_improvement_value": 320616,
    "last_sale_date": "1996-02-29"
  },
  "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": "1900",
    "survey_name": "557 Duboce Ave",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Duboce Triangle 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": "ca 1870–ca 1920",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "202310209115",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2023-10-20",
      "status_date": "2023-10-20",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "202304206122",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2023-04-20",
      "status_date": "2023-07-11",
      "estimated_cost": 1500,
      "revised_cost": 3000,
      "description": "temporary excavation to facilitate the construction of a retaining wall at 14 walter street (adjacent property). after the retaining wall is completed the soil will be restored to original condition. revision to 202208311640. to comply with nov 202293109",
      "source": "sf-building-permits"
    },
    {
      "number": "202211287255",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-11-28",
      "status_date": "2023-03-23",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "soil stabilization of 557 duboce ave soil during work at 551 duboce. to comply with nov 202293109.",
      "source": "sf-building-permits"
    },
    {
      "number": "202208311640",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2022-08-31",
      "status_date": "2026-01-23",
      "estimated_cost": 5000,
      "revised_cost": 0,
      "description": "install geogrout along 18' on south property line. the geogrout will penetrate about 9' into ground",
      "source": "sf-building-permits"
    },
    {
      "number": "201912068869",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2019-12-06",
      "status_date": "2026-01-09",
      "estimated_cost": 7500,
      "revised_cost": 0,
      "description": "permeation grouting below 75\" of eastside footing to a depth of 5' below the bottom of footing",
      "source": "sf-building-permits"
    },
    {
      "number": "M287847",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2011-11-07",
      "status_date": "2011-11-07",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "201104194412",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2011-04-19",
      "status_date": "2012-02-01",
      "estimated_cost": 9000,
      "revised_cost": 9000,
      "description": "replace 1 story rear yard deck by stairs.",
      "source": "sf-building-permits"
    },
    {
      "number": "M196089",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2010-04-02",
      "status_date": "2010-04-02",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201002056050",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-02-05",
      "status_date": "2010-08-11",
      "estimated_cost": 3500,
      "revised_cost": 3500,
      "description": "replace roof on dormer 3rd. flr. both, patio roof dining rm. small roof in light well.",
      "source": "sf-building-permits"
    },
    {
      "number": "201001074329",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2010-01-07",
      "status_date": "2010-08-13",
      "estimated_cost": 14000,
      "revised_cost": 14000,
      "description": "renovate existing bathrooms at 2nd and 3rd floors. no structural work.",
      "source": "sf-building-permits"
    },
    {
      "number": "200904206642",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-04-20",
      "status_date": "2009-04-30",
      "estimated_cost": 1500,
      "revised_cost": 1500,
      "description": "replace 9 treads & risers @ existing exterior front stair - material to be redwood/cedar - in kind. repair under 50% of total structure.",
      "source": "sf-building-permits"
    },
    {
      "number": "M156048",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2009-03-17",
      "status_date": "2009-03-17",
      "revised_cost": 1,
      "description": "street space & sidewalk",
      "source": "sf-building-permits"
    },
    {
      "number": "9609467",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1996-05-30",
      "status_date": "1997-01-11",
      "estimated_cost": 7000,
      "description": "dry rot repairs",
      "source": "sf-building-permits"
    },
    {
      "number": "9305897",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1993-04-12",
      "status_date": "1993-05-06",
      "estimated_cost": 9000,
      "description": "remove kitchen cabinets & counter top/install new cabinets",
      "source": "sf-building-permits"
    },
    {
      "number": "9209623",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-06-11",
      "status_date": "1992-11-13",
      "estimated_cost": 4860,
      "description": "vinyl siding #3663",
      "source": "sf-building-permits"
    },
    {
      "number": "9017913",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-09-06",
      "status_date": "1991-03-06",
      "estimated_cost": 8000,
      "revised_cost": 0,
      "description": "reroofing",
      "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=DUBOCE&street_type=AVE&address_number=557",
      "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=3538057&$order=closed_roll_year%20DESC&$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=3538&lot=057",
      "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=3538057",
      "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(-122.43267755137889%2037.768994783166534)%27)",
      "retrieved": "2026-07-28"
    },
    {
      "id": "duboce-triangle-context-statement",
      "name": "Christopher VerPlanck (VerPlanck Historic Preservation Consulting), Duboce Triangle Historic Context Statement, prepared for the Duboce Triangle Neighborhood Association, dated August 26, 2022, adopted 2022",
      "query": "https://sfplanning.s3.amazonaws.com/default/files/Preservation/DuboceTriangleHCS/preserv_duboce_triangleHCS-draft.pdf",
      "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
      "label": "Duboce Triangle Historic Context Statement, adopted 2022",
      "retrieved": "2026-08-13"
    }
  ],
  "historic_survey": {
    "survey": "Duboce Triangle Historic Context Statement (2022)",
    "source": "duboce-triangle-context-statement",
    "style": "Queen Anne / Classical Revival",
    "year_built_as_surveyed": "Ca. 1905",
    "note": "Inside the proposed Duboce Park Queen Anne/Classical Revival Rowhouse District, one of five local landmark districts the statement recommends: four related rowhouses built Ca. 1905 by the same, now unknown, builder, which the statement likens to “Postcard Row” opposite Alamo Square. All four are contributors to the California Register-eligible Duboce Triangle Historic District. Christopher VerPlanck's context statement of 2022 surveyed 552 properties in Duboce Triangle for the Duboce Triangle Neighborhood Association. Dates it gives as “Ca.” are its own estimates."
  }
}