{
  "address": "521 Liberty Street, San Francisco, CA 94114",
  "path": "/san-francisco/castro/liberty-street/521/",
  "apn": "3603047",
  "block": "3603",
  "lot": "047",
  "eas_baseid": "361956",
  "coordinates": {
    "lat": 37.75677,
    "lng": -122.432858
  },
  "parcel": {
    "year_built": 1900,
    "units": 1,
    "stories": 2,
    "rooms": 6,
    "bathrooms": 2,
    "bedrooms": 3,
    "lot_area_sqft": 2495,
    "building_area_sqft": 1608,
    "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 0521 LIBERTY             ST0000"
  },
  "assessment": {
    "roll_year": 2025,
    "assessed_land_value": 2415554,
    "assessed_improvement_value": 1035236,
    "last_sale_date": "2020-08-11"
  },
  "historic_status": {
    "ceqa_status_code": "A",
    "ceqa_status_code_article_10_11": "A",
    "ceqa_status_label": "Historic resource",
    "reason": "California Register Historic District",
    "yearbuilt": "1900",
    "in_article_10_11_historic_district": false,
    "source": "sf-planning"
  },
  "historic_district": {
    "name": "Castro & Liberty Streets Historic District",
    "california_register_status": "Eligible (not listed)",
    "national_register_status": "Not listed",
    "article_10_11_status": "No local landmark protection",
    "local_landmark_protection": false,
    "period_of_significance": "1897–1906",
    "source": "sf-historic-districts"
  },
  "permits": [
    {
      "number": "202109138234",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2021-09-13",
      "status_date": "2022-05-31",
      "estimated_cost": 5800,
      "revised_cost": 5800,
      "description": "replace 5 windows front of property. 4 30x77 1/2 and 1 50x771/4 - windows to be wood hung within the existing openings.",
      "source": "sf-building-permits"
    },
    {
      "number": "202011209397",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2020-11-20",
      "status_date": "2020-11-20",
      "estimated_cost": 21500,
      "revised_cost": 21500,
      "description": "remodel (e) bathroom in kind, ff&e, no structural changes",
      "source": "sf-building-permits"
    },
    {
      "number": "201208298548",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2012-08-29",
      "status_date": "2012-10-02",
      "estimated_cost": 12000,
      "revised_cost": 12000,
      "description": "re-tile 1/2 bath on main floor (mid level), replace kitchen counter in kind, replace interior stair with railing, balusters on handrail, side going from main floor to bedroom level. upstair bath: replace vanity only to comply with complaint# 201258990, no lighting change.",
      "source": "sf-building-permits"
    },
    {
      "number": "200705070637",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-05-07",
      "status_date": "2007-11-30",
      "estimated_cost": 60000,
      "revised_cost": 60000,
      "description": "cap extg ex. wall conc./2 plywood shear wall at rear and front wall of garage level. exterior extg parking area 14' to rear wall",
      "source": "sf-building-permits"
    },
    {
      "number": "200703196540",
      "type": "otc alterations permit",
      "status": "complete",
      "filed": "2007-03-19",
      "status_date": "2007-03-28",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "to renew expired pa# 2006/08/31/1108 & pa# 2006/09/25/3187 for final inspection.",
      "source": "sf-building-permits"
    },
    {
      "number": "M57324",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2007-02-12",
      "status_date": "2007-02-12",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M52043",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-12-27",
      "status_date": "2006-12-27",
      "revised_cost": 0,
      "description": "street space",
      "source": "sf-building-permits"
    },
    {
      "number": "M48009",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-11-09",
      "status_date": "2006-11-09",
      "revised_cost": 0,
      "description": "street space permit",
      "source": "sf-building-permits"
    },
    {
      "number": "200610135014",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-10-13",
      "status_date": "2006-10-13",
      "estimated_cost": 18000,
      "revised_cost": 18000,
      "description": "revision to (e) pa#200608311108. replace wood siding & windows @ back of bldg:replace in kind. install radiant gas fireplace @ wing wall brwn living & dinning room.majestic fireplace. replace skylight @ sun room roof.eliminate parapet floor area less than 1000 sqft. model #nvcvr36.",
      "source": "sf-building-permits"
    },
    {
      "number": "200609253187",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2006-09-25",
      "status_date": "2007-03-20",
      "estimated_cost": 1,
      "revised_cost": 1,
      "description": "rev. to (e) pa#200608311108- additional renovations to sunroom area",
      "source": "sf-building-permits"
    },
    {
      "number": "200608311108",
      "type": "otc alterations permit",
      "status": "expired",
      "filed": "2006-08-31",
      "status_date": "2007-03-20",
      "estimated_cost": 20000,
      "revised_cost": 20000,
      "description": "revision to existing permit 200607106128 new bath @ (e) bedroomn 2nd & half bth @ 1st floor removal of existing ealk conersions throughout to upgrade plumbing & electrical no more than 50% of (e) lath & plaster to be removed",
      "source": "sf-building-permits"
    },
    {
      "number": "200607106128",
      "type": "otc alterations permit",
      "status": "issued",
      "filed": "2006-07-10",
      "status_date": "2006-07-10",
      "estimated_cost": 65000,
      "revised_cost": 65000,
      "description": "interior renovations: remodel kitchen & bathroom. (replace cabinets, fixtures, appliance). addtional work-repair/replace plaster (30% of walls) repair/replace hardwood floors, painting, repair entry stairs treads less than 50%.",
      "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=LIBERTY&street_type=ST&address_number=521",
      "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=3603047&$order=closed_roll_year%20DESC&$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=047",
      "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=3603047",
      "retrieved": "2026-07-28"
    },
    {
      "id": "sf-historic-districts",
      "name": "SF Planning Department — Historic Districts via DataSF",
      "query": "https://data.sfgov.org/resource/63x5-g3m4.json?$where=intersects(the_geom,%20%27POINT(-122.4328575291676%2037.75677029638895)%27)",
      "retrieved": "2026-07-28"
    }
  ]
}