{
  "address": "3936 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3936/",
  "apn": "2752022",
  "block": "2752",
  "lot": "022",
  "eas_baseid": "345549",
  "coordinates": {
    "lat": 37.756251,
    "lng": -122.4353
  },
  "parcel": {
    "year_built": 1929,
    "units": 1,
    "stories": 2,
    "rooms": 6,
    "bathrooms": 2,
    "lot_area_sqft": 2548,
    "building_area_sqft": 2712,
    "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": "3936A3936 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 89383,
    "assessed_improvement_value": 240489
  },
  "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": "1929",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202606253888",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2026-06-25",
      "status_date": "2026-07-01",
      "estimated_cost": 100000,
      "revised_cost": 179000,
      "description": "interior remodel converting on habitable 1st fl space into habitable spaces inlculding a bath, media, study, gym, and wine room. new window being installed on rear facade. the existing buildings gross floor area is not being modified. 836 sf of prev e occupied floor is being renovated.",
      "source": "sf-building-permits"
    },
    {
      "number": "202505166697",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-05-16",
      "status_date": "2026-04-23",
      "estimated_cost": 220000,
      "revised_cost": 300000,
      "description": "ground fl: rebuild stair 2nd fl: remodel kitchen, relocate bath, infill light court, upgrade stairs to 1st fl, modify (e) rear roof deck. 3rd fl: remodel master bath & bath, infill light court. replace & upgrade windows",
      "source": "sf-building-permits"
    },
    {
      "number": "202409050095",
      "type": "additions alterations or repairs",
      "status": "withdrawn",
      "filed": "2024-09-16",
      "status_date": "2025-04-25",
      "estimated_cost": 300000,
      "revised_cost": 760000,
      "description": "remodel & addition to (e) 4,105.6 sqft 3-story, single family residence w/attached 1-car garage, convert(e) non-habitable space @ 1/f to 801.1 sqft conditioned space for adu, new roof deck w/retractable skylight, remodel of decks @ 2/f & 3/f & interior remodel throughout also part of scope of work.",
      "source": "sf-building-permits"
    },
    {
      "number": "202407226975",
      "type": "additions alterations or repairs",
      "status": "cancelled",
      "filed": "2024-07-22",
      "status_date": "2024-08-05",
      "estimated_cost": 300000,
      "description": "remodel & ddition to an (e) 4,105.6 sq ft three story sfd w/ attached 1 car garage.converting existing non-habitable space @ 1st fl to 801.1 sq ft conditioned space for accessory dwelling unit.(n) roof deck w/ retractable skylight,remodel of decks @ 2nd & 3rd fls.",
      "source": "sf-building-permits"
    },
    {
      "number": "202402206164",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2024-02-20",
      "status_date": "2025-07-11",
      "estimated_cost": 50000,
      "revised_cost": 50000,
      "description": "kitchen and bathroom renovation. kitchen - new floor, new counter top, new cabinets. bathroom - new tiles, new vanities, non structural",
      "source": "sf-building-permits"
    },
    {
      "number": "9906239",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "1999-04-01",
      "status_date": "1999-10-01",
      "estimated_cost": 7000,
      "description": "replace front steps with new, no change in configuration",
      "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=3936",
      "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=2752022&$order=closed_roll_year%20DESC&$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=022",
      "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=2752022",
      "retrieved": "2026-07-28"
    }
  ]
}