{
  "address": "811 Treat Avenue, San Francisco, CA 94110",
  "path": "/san-francisco/mission/treat-avenue/811/",
  "apn": "3613084",
  "block": "3613",
  "lot": "084",
  "eas_baseid": "362695",
  "coordinates": {
    "lat": 37.756883,
    "lng": -122.413209
  },
  "parcel": {
    "year_built": 1892,
    "units": 5,
    "stories": 2,
    "rooms": 13,
    "bathrooms": 5,
    "bedrooms": 4,
    "lot_area_sqft": 5160,
    "building_area_sqft": 3319,
    "lot_depth_ft": 86,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 5 to 14 Units",
    "construction_type_code": "D",
    "supervisor_district": 9,
    "assessor_neighborhood": "Inner Mission",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 0811 TREAT               AV0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 462000,
    "assessed_improvement_value": 308000
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "National Register Individual, Historic Survey Result",
    "yearbuilt": "1892",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202104148486",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-04-14",
      "status_date": "2021-05-06",
      "estimated_cost": 6200,
      "revised_cost": 6200,
      "description": "install 3 ply roof consisting of one ply base sheet, one ply sta smooth sheet, one ply gta cap sheet.",
      "source": "sf-building-permits"
    },
    {
      "number": "201808318867",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-08-31",
      "status_date": "2018-10-01",
      "estimated_cost": 13000,
      "revised_cost": 13000,
      "description": "installation of a new fire alarm system added 1 horn strobe, smk det and manual pull to as built plan 201505287452 & 201203010405 maher na",
      "source": "sf-building-permits"
    },
    {
      "number": "201808016137",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2018-08-01",
      "status_date": "2018-09-25",
      "estimated_cost": 13000,
      "revised_cost": 13000,
      "description": "installation of a new fire alarm system. ref #201505287452. sprinkler #20170301405.",
      "source": "sf-building-permits"
    },
    {
      "number": "201706219922",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2017-06-21",
      "status_date": "2018-09-24",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revisions to pa #201505287452 & #201610251136. interior modifications to the floor plan, all within the previously approved building boundry. no structural changes. change single door to double door in one unit. relocate kitchen in one unit.",
      "source": "sf-building-permits"
    },
    {
      "number": "201703010405",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2017-03-01",
      "status_date": "2018-10-01",
      "estimated_cost": 25000,
      "revised_cost": 25000,
      "description": "install new fire sprinkler system per nfpa 13. two units first floor and unit 7th second floor including 2\" underground fire service. reference 201505287452",
      "source": "sf-building-permits"
    },
    {
      "number": "201701066697",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2017-01-06",
      "status_date": "2017-01-06",
      "estimated_cost": 2200,
      "revised_cost": 2200,
      "description": "repair and replace dryrot damaged siding on east and south wall. approx 1000 sq ft. not visible from street.",
      "source": "sf-building-permits"
    },
    {
      "number": "201610251136",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2016-10-25",
      "status_date": "2018-09-24",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "proposed revision to approved pa #201505287452 to accurately reflect as built condition of rear building framing. n/a maher ordinance",
      "source": "sf-building-permits"
    },
    {
      "number": "201505287452",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2015-05-28",
      "status_date": "2018-09-21",
      "estimated_cost": 250000,
      "revised_cost": 600000,
      "description": "conversion (e) storage shed at rear to living space to accomodate the addition of 2 additional units(7 total). exterior modifications to (e) buildings. addition (n) roof deck at rear bldg. horizontal additon to rear of 2 car garage to accomadate bicycle parking. n/a for maher ordinance no.155-13.",
      "source": "sf-building-permits"
    },
    {
      "number": "200711198545",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-11-19",
      "status_date": "2010-11-10",
      "estimated_cost": 6500,
      "revised_cost": 6500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9805998",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-04-08",
      "status_date": "1999-03-01",
      "estimated_cost": 2500,
      "description": "install 15' & alcoa siding on rear north wall",
      "source": "sf-building-permits"
    }
  ],
  "permit_summary": {
    "count_on_file": 16,
    "range": "1998–2021",
    "shown_on_page": 10,
    "note": "6 nominal $1 street-space or sidewalk permits are omitted from the timeline."
  },
  "sources": [
    {
      "id": "sf-eas-addresses",
      "name": "SF Enterprise Addressing System via DataSF",
      "query": "https://data.sfgov.org/resource/3mea-di5p.json?street_name=TREAT&street_type=AVE&address_number=811",
      "retrieved": "2026-09-18"
    },
    {
      "id": "sf-assessor-roll",
      "name": "SF Office of the Assessor-Recorder via DataSF (2025 secured roll)",
      "query": "https://data.sfgov.org/resource/wv5m-vpq2.json?parcel_number=3613084&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-09-18"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3613&lot=084",
      "retrieved": "2026-09-18"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3613084",
      "retrieved": "2026-09-18"
    },
    {
      "id": "nrhp-100001338",
      "name": "National Register of Historic Places nomination, Henry Geilfuss House (reference number 100001338), National Park Service.",
      "query": "https://npgallery.nps.gov/NRHP/GetAsset/NRHP/100001338_text",
      "label": "National Register of Historic Places nomination, National Park Service",
      "retrieved": "2026-09-18"
    }
  ],
  "historical_record": [
    {
      "date": "1882-11",
      "kind": "construction",
      "description": "Begun in November 1882 to the design of the architect Henry Geilfuss, for his own family: a detached, bay-windowed Italianate house of two storeys on a sixty-foot lot more than twice the usual width, with a stable behind reached by a side drive — a freestanding house in a district of row houses.",
      "source": "nrhp-100001338"
    },
    {
      "date": "circa 1894",
      "kind": "site history",
      "description": "Address changed from 809 Treat Avenue to 811.",
      "source": "nrhp-100001338"
    },
    {
      "date": "1900",
      "kind": "alteration",
      "description": "By 1900 the barn and stable at the rear had been rebuilt as one two-storey stable pushed forward into the raised room, with a separate apartment of its own, and the other outbuildings were cleared.",
      "source": "nrhp-100001338"
    },
    {
      "date": "1904–1937",
      "kind": "occupancy",
      "description": "A curtain laundry worked from the converted stable at the back of the lot.",
      "source": "nrhp-100001338"
    },
    {
      "date": "1950",
      "kind": "alteration",
      "description": "By 1950 the former stable, extended to the south, was a sheet-metal works, and a one-storey garage had been built at the front corner of the lot.",
      "source": "nrhp-100001338"
    },
    {
      "date": "1972",
      "kind": "alteration",
      "description": "A permit was issued to legalize the five apartments the house had been divided into; it was cancelled later that year, after electrical and plumbing inspections.",
      "source": "nrhp-100001338"
    },
    {
      "date": "1975",
      "kind": "alteration",
      "description": "A second permit was issued to legalize the five apartments.",
      "source": "nrhp-100001338"
    },
    {
      "date": "1990s",
      "kind": "occupancy",
      "description": "The rear buildings were a cabinet shop.",
      "source": "nrhp-100001338"
    },
    {
      "date": "2017-07-27",
      "kind": "designation",
      "description": "Listed on the National Register of Historic Places.",
      "source": "nrhp-100001338"
    }
  ],
  "notable_residents": [
    {
      "name": "Henry Geilfuss",
      "period": "1882–1900",
      "detail": "Victorian architect of some two to five hundred San Francisco buildings, who designed this house for his family.",
      "source": "nrhp-100001338"
    }
  ],
  "building": {
    "name": "Henry Geilfuss House",
    "architect": "Henry Geilfuss",
    "completed": 1882,
    "completed_conflict": "The assessor's roll gives 1892; construction began in November 1882."
  },
  "photo": {
    "file": "assets/photo.jpg",
    "width": 1280,
    "height": 960,
    "title": "Henry Geilfuss House (NRHP)",
    "author": "Dmillard10",
    "license": "CC BY-SA 4.0",
    "license_url": "https://creativecommons.org/licenses/by-sa/4.0",
    "cropped": true,
    "source_url": "https://commons.wikimedia.org/wiki/File:Henry_Geilfuss_House_(NRHP).jpg",
    "retrieved": "2026-10-23"
  }
}