{
  "address": "3466 21st Street, San Francisco, CA 94110",
  "path": "/san-francisco/mission/21st-street/3466/",
  "apn": "3607020",
  "block": "3607",
  "lot": "020",
  "eas_baseid": "362241",
  "coordinates": {
    "lat": 37.756927,
    "lng": -122.424771
  },
  "parcel": {
    "year_built": 1923,
    "units": 1,
    "stories": 3,
    "rooms": 14,
    "bathrooms": 4,
    "bedrooms": 4,
    "lot_area_sqft": 6041,
    "building_area_sqft": 6862,
    "basement_area_sqft": 3384,
    "use": "Single Family Residential",
    "property_class": "Dwelling",
    "construction_type_code": "D",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Mission",
    "property_location_raw": "0000 3466 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 9102634,
    "assessed_improvement_value": 8554724,
    "last_sale_date": "2017-12-29"
  },
  "historic_status": {
    "ceqa_status_code": "C",
    "ceqa_status_code_article_10_11": "C",
    "ceqa_status_label": "Not a historical resource",
    "reason": "Historic Resource Evaluation Response",
    "yearbuilt": "1923",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202401315028",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2024-01-31",
      "status_date": "2024-06-18",
      "estimated_cost": 11000,
      "revised_cost": 11000,
      "description": "rev pa202203109743: addition of 6 battery only ac disconnects. rev due to utiity changes to ess interconnection requiresment with formaces us to install an additional handled disconnect per battery. all changes delta 12 01/17/2024.",
      "source": "sf-building-permits"
    },
    {
      "number": "202206106104",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-06-10",
      "status_date": "2023-02-01",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revision to 202011058337. add new exterior wall and gate at east side yard",
      "source": "sf-building-permits"
    },
    {
      "number": "202203109743",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2022-03-10",
      "status_date": "2022-10-25",
      "estimated_cost": 36000,
      "revised_cost": 36000,
      "description": "installation of (6) tesla powerll 2.0. s/n: 3012170-xx-7 (84kwh total). requires building permit for battery ess. addition to (e) approved e/p e202107214515 for a solar pv system (plan 3572r-1). this cost is for batteries only, fees have been paid for solar permit. ref 202109249152.",
      "source": "sf-building-permits"
    },
    {
      "number": "202110070037",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-10-07",
      "status_date": "2022-10-26",
      "estimated_cost": 20000,
      "revised_cost": 40000,
      "description": "install (1) fire alarm system for dedicated heat detection, sprinkler supervisory & duct detection. ref#2021-0924-9152",
      "source": "sf-building-permits"
    },
    {
      "number": "202109249152",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-09-24",
      "status_date": "2022-11-10",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "revision to 202011058337. provide 2 closets for electrical storage system. ess batteries will be submitted under separate permit",
      "source": "sf-building-permits"
    },
    {
      "number": "202108277296",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-08-27",
      "status_date": "2022-10-17",
      "estimated_cost": 1,
      "revised_cost": 3168,
      "description": "as-builts: fire sprinkler system: head locations and underground routing changed. adding coverage to tesla battery rooms at eh11. add 15 heads for a new system total of 119 heads. sprinkler monitoring/solar/battery storage under sep permits. ref 202012090667, 202002134346 and 201809119773.",
      "source": "sf-building-permits"
    },
    {
      "number": "202012090667",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-12-09",
      "status_date": "2022-11-10",
      "estimated_cost": 78400,
      "revised_cost": 78400,
      "description": "underground revisions. changes clouded & \"delta 3\" on plan.",
      "source": "sf-building-permits"
    },
    {
      "number": "202011058337",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-11-05",
      "status_date": "2022-11-10",
      "estimated_cost": 25000,
      "revised_cost": 25000,
      "description": "revision #3 to pa# 2018-0911-9773 s4 regarding east and north property line wall structural foundation and design.",
      "source": "sf-building-permits"
    },
    {
      "number": "M1214909",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2020-07-06",
      "status_date": "2020-07-20",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "202002265434",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2020-02-26",
      "status_date": "2022-11-10",
      "estimated_cost": 33500,
      "revised_cost": 55000,
      "description": "revision to pa# 2018-0911-9773 s4. remove rear stair off terrace. add bay volume to 2nd flr on terrace. lower west side yard grade . modify entry stair. window and door changes. **to comply w/ maher ord# 155-13, route to dph**",
      "source": "sf-building-permits"
    },
    {
      "number": "202002134346",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2020-02-13",
      "status_date": "2022-10-17",
      "estimated_cost": 56215,
      "revised_cost": 78400,
      "description": "installation of overhead fire protection spriknler ysstme including 4in u/g water fire service. ref pa201809119773.",
      "source": "sf-building-permits"
    },
    {
      "number": "M1183507",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2020-01-09",
      "status_date": "2020-01-09",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201910174732",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2019-10-17",
      "status_date": "2022-11-10",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "rev to pa# 201809119773 to include civil sheets and an updated shoring plan",
      "source": "sf-building-permits"
    },
    {
      "number": "201809119773",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2018-09-11",
      "status_date": "2022-11-10",
      "estimated_cost": 3600000,
      "revised_cost": 3600000,
      "description": "renovate (e) house, excavate for a fully below-grade basement, reduce size of (e) 1976 rear addition, modify (e) windows and doors. **comply w/ maher, route to dph**",
      "source": "sf-building-permits"
    },
    {
      "number": "201307172088",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2013-07-17",
      "status_date": "2013-10-08",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "remodel existing kitchen, remove walls & install new steel beams per plan, upgrade plumbing, electrical to current code, new cabinets & appliances.",
      "source": "sf-building-permits"
    },
    {
      "number": "M110486",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2008-03-04",
      "status_date": "2008-03-04",
      "revised_cost": 1,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "M102564",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2008-01-11",
      "status_date": "2008-01-11",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "200402065849",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2004-02-06",
      "status_date": "2005-03-31",
      "estimated_cost": 50000,
      "revised_cost": 50000,
      "description": "relocate laundry room, new powder room, bar area on basement, no structural changes. all work to non",
      "source": "sf-building-permits"
    },
    {
      "number": "200307219946",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-07-21",
      "status_date": "2003-11-20",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "rework two existing bathrooms, see drawings enclosed",
      "source": "sf-building-permits"
    },
    {
      "number": "200307219948",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-07-21",
      "status_date": "2003-11-19",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "renew app 200208053150",
      "source": "sf-building-permits"
    },
    {
      "number": "200307219950",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2003-07-21",
      "status_date": "2003-11-20",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "rnew expired permits 200002081319 & 200004036227 & 200208053153",
      "source": "sf-building-permits"
    },
    {
      "number": "200208053153",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2002-08-05",
      "status_date": "2002-12-24",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "renew app#200004036227",
      "source": "sf-building-permits"
    },
    {
      "number": "200208053150",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2002-08-05",
      "status_date": "2003-11-20",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "revision to app #200004036227/modifiy bthrm new owners specification",
      "source": "sf-building-permits"
    },
    {
      "number": "200004036227",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2000-04-03",
      "status_date": "2001-04-04",
      "estimated_cost": 200000,
      "revised_cost": 200000,
      "description": "kitchen & bath remodel",
      "source": "sf-building-permits"
    },
    {
      "number": "200002081319",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2000-02-08",
      "status_date": "2001-02-08",
      "revised_cost": 40000,
      "description": "remodel kitchen and bathroom",
      "source": "sf-building-permits"
    },
    {
      "number": "9814712",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1998-07-31",
      "status_date": "1999-03-02",
      "estimated_cost": 8400,
      "description": "replace doors to ride yard remove plastr in basement/sheetro",
      "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=21ST&street_type=ST&address_number=3466",
      "retrieved": "2026-07-31"
    },
    {
      "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=3607020&$order=closed_roll_year%20DESC&$limit=1",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-building-permits",
      "name": "SF Dept. of Building Inspection via DataSF",
      "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3607&lot=020",
      "retrieved": "2026-07-31"
    },
    {
      "id": "sf-planning",
      "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
      "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3607020",
      "retrieved": "2026-07-31"
    }
  ]
}