{
  "address": "4000 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/4000/",
  "apn": "2751006H",
  "block": "2751",
  "lot": "006H",
  "eas_baseid": "345494",
  "coordinates": {
    "lat": 37.756227,
    "lng": -122.435821
  },
  "parcel": {
    "year_built": 1928,
    "units": 1,
    "stories": 1,
    "rooms": 5,
    "bathrooms": 2,
    "bedrooms": 2,
    "lot_area_sqft": 2250,
    "building_area_sqft": 1536,
    "lot_depth_ft": 90,
    "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": "Castro/Upper Market",
    "property_location_raw": "0000 4000 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1470000,
    "assessed_improvement_value": 630000,
    "last_sale_date": "2020-12-21"
  },
  "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": "1928",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202505156530",
      "type": "otc alterations permit",
      "status": "filed",
      "filed": "2025-05-15",
      "status_date": "2025-05-15",
      "estimated_cost": 5000,
      "revised_cost": 0,
      "description": "create new exterior fire wall at existing residence. new fences 10' above existing grade at rear yard. new access and maintenance walkway at rear yard. this is a seperate permit from pa #202406053765 and pa #202202192659",
      "source": "sf-building-permits"
    },
    {
      "number": "202503273192",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-03-27",
      "status_date": "2025-03-31",
      "estimated_cost": 13800,
      "revised_cost": 13800,
      "description": "re-roofing. to comply with nov 202535485. work performed in 12/2020.",
      "source": "sf-building-permits"
    },
    {
      "number": "202406053764",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2024-09-14",
      "status_date": "2025-09-24",
      "estimated_cost": 102000,
      "revised_cost": 102000,
      "description": "1-adu per state adu per government code section 65852.2; main residence under separate pa# 202209192659.",
      "source": "sf-building-permits"
    },
    {
      "number": "202406033554",
      "type": "additions alterations or repairs",
      "status": "complete",
      "filed": "2024-07-10",
      "status_date": "2025-09-03",
      "estimated_cost": 1,
      "revised_cost": 25000,
      "description": "foundation sequence and temporary shoring for retaining wall as approved under pa# 202211176788.",
      "source": "sf-building-permits"
    },
    {
      "number": "202211176788",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2022-11-17",
      "status_date": "2024-03-06",
      "estimated_cost": 30000,
      "revised_cost": 156750,
      "description": "rear yard: create new decks and walkways less than 3' above (e) grade, with new stair connections between (e) residence , walkways and (e) yard/grade. replacement fence and access gate from public way to yard. replacement retaining wall in rear yard. relocate door facing yard. excavat 21.1 cubic yds",
      "source": "sf-building-permits"
    },
    {
      "number": "202209192659",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2022-09-19",
      "status_date": "2025-08-21",
      "estimated_cost": 495000,
      "revised_cost": 1098742,
      "description": "vertical addition to (e) single family home. convert (e) storage space at 1st fl to living space. renovate (e) street facing and rear facing facades.",
      "source": "sf-building-permits"
    },
    {
      "number": "200904176498",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2009-04-17",
      "status_date": "2009-08-26",
      "estimated_cost": 12000,
      "revised_cost": 18000,
      "description": "remodel existing bathroom, move bathtub, toilet & vanity. add new bathroom in hall closet and part of hallway @ 2nd floor.",
      "source": "sf-building-permits"
    },
    {
      "number": "M26837",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2004-03-23",
      "status_date": "2004-03-23",
      "revised_cost": 0,
      "description": "sidewalk repair",
      "source": "sf-building-permits"
    },
    {
      "number": "9716839",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1997-08-29",
      "status_date": "1999-02-24",
      "estimated_cost": 7500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9306578",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1993-04-21",
      "status_date": "1993-06-17",
      "estimated_cost": 13900,
      "description": "repair dryrot at bay/electrical work/new bathroom fixtures",
      "source": "sf-building-permits"
    },
    {
      "number": "9006518",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1990-04-04",
      "status_date": "1990-05-23",
      "estimated_cost": 2500,
      "revised_cost": 0,
      "description": "repair water damage at fascia & cornice trim",
      "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=4000",
      "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=2751006H&$order=closed_roll_year%20DESC&$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=2751&lot=006H",
      "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=2751006H",
      "retrieved": "2026-07-28"
    }
  ]
}