{
  "address": "3878–3880 21st Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/21st-street/3878/",
  "apn": "3603024",
  "block": "3603",
  "lot": "024",
  "eas_baseid": "361935",
  "coordinates": {
    "lat": 37.756214,
    "lng": -122.434236
  },
  "address_range": "3878–3880",
  "street_numbers_on_parcel": [
    "3878",
    "3880"
  ],
  "also_addressed": [
    "799 CASTRO ST"
  ],
  "parcel": {
    "year_built": 1909,
    "units": 3,
    "stories": 2,
    "rooms": 12,
    "bathrooms": 3,
    "bedrooms": 4,
    "lot_area_sqft": 2650,
    "building_area_sqft": 3315,
    "use": "Multi-Family Residential",
    "property_class": "Apartment 4 units or less",
    "construction_type_code": "NA",
    "zoning": "RH-2",
    "supervisor_district": 8,
    "assessor_neighborhood": "Eureka Valley/Dolores Heights",
    "analysis_neighborhood": "Castro/Upper Market",
    "property_location_raw": "3880 3878 21ST                ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 1330000,
    "assessed_improvement_value": 570000,
    "last_sale_date": "2007-06-01"
  },
  "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": "1909",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "permits": [
    {
      "number": "202607074596",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2026-07-07",
      "status_date": "2026-07-21",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to obtain final inspection for work approved under pa# 202503101889. all work is complete.",
      "source": "sf-building-permits"
    },
    {
      "number": "202607074597",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2026-07-07",
      "status_date": "2026-07-21",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to obtain final inspection for work approved under pa# 202503273143. all work is complete.",
      "source": "sf-building-permits"
    },
    {
      "number": "202510298365",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-10-29",
      "status_date": "2026-07-01",
      "estimated_cost": 4000,
      "revised_cost": 4000,
      "description": "new fence and gate for side yard entrance.",
      "source": "sf-building-permits"
    },
    {
      "number": "202510167476",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-10-16",
      "status_date": "2026-07-01",
      "estimated_cost": 2000,
      "revised_cost": 2000,
      "description": "reconfigure 3rd fl. bathroom wall to relocate vanity reinstate permit # 2023-0872-4905",
      "source": "sf-building-permits"
    },
    {
      "number": "202510107199",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-10-10",
      "status_date": "2026-07-08",
      "estimated_cost": 14220,
      "revised_cost": 14220,
      "description": "re-roofing: remove and replace roofing material / existing roofing material (in-kind)",
      "source": "sf-building-permits"
    },
    {
      "number": "202508284147",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2025-08-28",
      "status_date": "2026-07-01",
      "estimated_cost": 7000,
      "revised_cost": 7000,
      "description": "revision to 202308224905- comply with nov 202540942 to include repair (e) decks at rear. in kind not visible from street. less than 50%.",
      "source": "sf-building-permits"
    },
    {
      "number": "202506239198",
      "type": "otc alterations permit",
      "status": "filed",
      "filed": "2025-06-23",
      "status_date": "2025-06-23",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "as built for fire sprinkler work. ref fire sprinkler permit 202411195264, bldg permit 202503101889, original permit 201704043134.",
      "source": "sf-building-permits"
    },
    {
      "number": "202503273143",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2025-03-27",
      "status_date": "2026-07-07",
      "estimated_cost": 25000,
      "revised_cost": 25000,
      "description": "replace existing windows front facade with clad windows raising sills to existing windows. replace rear windows.",
      "source": "sf-building-permits"
    },
    {
      "number": "202503101889",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2025-03-10",
      "status_date": "2025-03-11",
      "estimated_cost": 1000,
      "revised_cost": 1000,
      "description": "relocation bathroom to laundry room. ref#: 201704043134",
      "source": "sf-building-permits"
    },
    {
      "number": "202411195264",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2024-11-19",
      "status_date": "2024-11-19",
      "estimated_cost": 15000,
      "revised_cost": 15039,
      "description": "install fire sprinkler for new adu per nfpa 13. 13 heads. new meter required. app 201704043134",
      "source": "sf-building-permits"
    },
    {
      "number": "202308224905",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2023-08-22",
      "status_date": "2026-07-01",
      "estimated_cost": 150000,
      "revised_cost": 325000,
      "description": "2nd fl. kitchen remodel, 2 new bathrooms 3rd fl. kitchen remodel, 2 new bathrooms",
      "source": "sf-building-permits"
    },
    {
      "number": "M844207",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2017-10-16",
      "status_date": "2017-10-16",
      "revised_cost": 1,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "201704043134",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2017-04-04",
      "status_date": "2020-06-25",
      "estimated_cost": 25000,
      "revised_cost": 157000,
      "description": "addition of one new dwelling unit at basement level per ordinance 162-16",
      "source": "sf-building-permits"
    },
    {
      "number": "201607202873",
      "type": "otc alterations permit",
      "status": "cancelled",
      "filed": "2016-07-20",
      "status_date": "2016-11-09",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "document current legal use and occupancy of subject one story building is a commercial office per pa#8005432 change from market to office use, no work under this permit.",
      "source": "sf-building-permits"
    },
    {
      "number": "201409196883",
      "type": "additions alterations or repairs",
      "status": "issued",
      "filed": "2014-09-19",
      "status_date": "2020-06-27",
      "estimated_cost": 500000,
      "revised_cost": 750000,
      "description": "alteration of existing commercial office building - for conversion of occupancy to r-3 sfr. to replace 2012-08-30-8694s. change of use , new roof deck, add residential kitchen, baths, bedrooms.",
      "source": "sf-building-permits"
    },
    {
      "number": "201208308688",
      "type": "additions alterations or repairs",
      "status": "withdrawn",
      "filed": "2012-08-30",
      "status_date": "2019-04-04",
      "estimated_cost": 100000,
      "description": "convert 2 unit residential building to single family. 1 story rear yard addition with roof deck. provide new master bedroom and bath at 2nd flr. provide new kitchen at 1st fl. general remodel of top 2 floors. provide new habitable space at basement. 2 new fire rated windows at rear. remodel front fa",
      "source": "sf-building-permits"
    },
    {
      "number": "201208308693",
      "type": "demolitions",
      "status": "withdrawn",
      "filed": "2012-08-30",
      "status_date": "2014-08-04",
      "estimated_cost": 30000,
      "description": "demlish one story office building.",
      "source": "sf-building-permits"
    },
    {
      "number": "201208308694",
      "type": "new construction wood frame",
      "status": "withdrawn",
      "filed": "2012-08-30",
      "status_date": "2014-08-04",
      "estimated_cost": 500000,
      "description": "erect 3 storys of 1 single family, type 5 building.",
      "source": "sf-building-permits"
    },
    {
      "number": "200104247560",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2001-04-24",
      "status_date": "2001-05-25",
      "estimated_cost": 1250,
      "revised_cost": 1250,
      "description": "repair dry rot damaga deck posts & fence",
      "source": "sf-building-permits"
    },
    {
      "number": "8810051",
      "type": "additions alterations or repairs",
      "status": "withdrawn",
      "filed": "1988-07-22",
      "status_date": "1988-09-07",
      "estimated_cost": 6000,
      "description": "build 2 new walls to enclose basement area",
      "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=3878",
      "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=3603024&$order=closed_roll_year%20DESC&$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=3603&lot=024",
      "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=3603024",
      "retrieved": "2026-07-28"
    }
  ]
}