{
  "address": "3900–3922 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3900/",
  "apn": "2752020",
  "block": "2752",
  "lot": "020",
  "eas_baseid": "345547",
  "coordinates": {
    "lat": 37.756206,
    "lng": -122.434917
  },
  "address_range": "3900–3922",
  "street_numbers_on_parcel": [
    "3900",
    "3922"
  ],
  "parcel": {
    "year_built": 1910,
    "units": 3,
    "rooms": 13,
    "bathrooms": 5,
    "lot_area_sqft": 4373,
    "building_area_sqft": 4199,
    "use": "Multi-Family Residential",
    "property_class": "Dwellings - Apt 4 units or less",
    "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 3900 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 309933,
    "assessed_improvement_value": 333913,
    "last_sale_date": "2017-06-19"
  },
  "historic_status": {
    "ceqa_status_code": "B",
    "ceqa_status_code_article_10_11": "B",
    "ceqa_status_label": "Unevaluated",
    "reason": "No evaluation and 45 years or older",
    "yearbuilt": "1910",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202606183538",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2026-06-18",
      "status_date": "2026-06-18",
      "estimated_cost": 27165,
      "revised_cost": 27165,
      "description": "re-roofing: remove and replace roofing material / existing roofing material (in-kind)",
      "source": "sf-building-permits"
    },
    {
      "number": "202303063079",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-03-06",
      "status_date": "2023-05-19",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "repair front entrance with concrete pad and stairs- add pavers and turf to side yard",
      "source": "sf-building-permits"
    },
    {
      "number": "202303063099",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2023-03-06",
      "status_date": "2023-03-06",
      "estimated_cost": 10000,
      "revised_cost": 10000,
      "description": "recommencement and completion of work approved under pa# 201804025291.",
      "source": "sf-building-permits"
    },
    {
      "number": "202210063862",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-10-06",
      "status_date": "2024-06-27",
      "estimated_cost": 13986,
      "revised_cost": 13986,
      "description": "(11) windows replacement: replace windows kind for kind- size for size. retrofit install street visible (7) (n) aluminum clad over wood 4 (e) are vinyl, 3 (e) are wood not street visible (4) windows with (n) vinyl. u-factor < =0.30",
      "source": "sf-building-permits"
    },
    {
      "number": "202207067813",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-07-06",
      "status_date": "2025-04-02",
      "estimated_cost": 55000,
      "revised_cost": 55000,
      "description": "remove load bearing wall and misc voluntary structural upgrade ref pa# 2022-01226-6655",
      "source": "sf-building-permits"
    },
    {
      "number": "202201266655",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2022-01-26",
      "status_date": "2023-05-19",
      "estimated_cost": 2000,
      "revised_cost": 45000,
      "description": "soft demo- remove sheetrock and insulate entire one unit. no plans kitchen and bath remodel: (rear building)",
      "source": "sf-building-permits"
    },
    {
      "number": "201804025291",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2018-04-02",
      "status_date": "2024-07-16",
      "estimated_cost": 36700,
      "revised_cost": 36700,
      "description": "kitchen & bathroom remodel.",
      "source": "sf-building-permits"
    },
    {
      "number": "200703237065",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-03-23",
      "status_date": "2007-06-20",
      "estimated_cost": 5000,
      "revised_cost": 5000,
      "description": "bathroom upgrade / remodel. change out vanity, patch up sheetrock, tile, paint. no electrical work.",
      "source": "sf-building-permits"
    },
    {
      "number": "9922174",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "1999-10-19",
      "status_date": "1999-12-16",
      "estimated_cost": 3500,
      "description": "replace 11 aluminum windows to vinyl one @front side",
      "source": "sf-building-permits"
    },
    {
      "number": "9204019",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1992-03-13",
      "status_date": "1993-03-04",
      "estimated_cost": 2500,
      "description": "reroofing",
      "source": "sf-building-permits"
    },
    {
      "number": "9025945",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1990-12-21",
      "status_date": "1992-01-28",
      "estimated_cost": 2400,
      "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=21ST&street_type=ST&address_number=3900",
      "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=2752020&$order=closed_roll_year%20DESC&$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=2752&lot=020",
      "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=2752020",
      "retrieved": "2026-07-28"
    }
  ]
}