{
 "address": "3733–3735 20th Street, San Francisco, CA 94110",
 "path": "/san-francisco/mission/20th-street/3733/",
 "apn": "3607070",
 "block": "3607",
 "lot": "070",
 "eas_baseid": "362289",
 "coordinates": {
  "lat": 37.758073,
  "lng": -122.424269
 },
 "address_range": "3733–3735",
 "street_numbers_on_parcel": [
  "3733",
  "3735"
 ],
 "parcel": {
  "year_built": 1900,
  "units": 2,
  "stories": 2,
  "rooms": 10,
  "bathrooms": 3,
  "bedrooms": 4,
  "lot_area_sqft": 2850,
  "building_area_sqft": 2656,
  "lot_depth_ft": 14,
  "use": "Multi-Family Residential",
  "property_class": "Flats & Duplex",
  "construction_type_code": "D",
  "zoning": "RH-2",
  "supervisor_district": 8,
  "assessor_neighborhood": "Eureka Valley/Dolores Heights",
  "analysis_neighborhood": "Mission",
  "property_location_raw": "3735 3733 20TH                ST0000"
 },
 "assessment": {
  "roll_year": 2025,
  "assessed_land_value": 1006999,
  "assessed_improvement_value": 870041,
  "last_sale_date": "2002-08-30"
 },
 "historic_status": {
  "ceqa_status_code": "A",
  "ceqa_status_code_article_10_11": "A*",
  "ceqa_status_label": "Historic resource",
  "reason": "Article 10 Historic District, California Register Historic District, Historic Survey Result",
  "yearbuilt": "1900",
  "in_article_10_11_historic_district": true,
  "source": "sf-planning"
 },
 "historic_district": {
  "name": "Liberty Hill Historic District",
  "california_register_status": "Eligible (not listed)",
  "national_register_status": "Not listed",
  "article_10_11_status": "Article 10 historic district",
  "local_landmark_protection": true,
  "period_of_significance": "1860s–1906",
  "source": "sf-historic-districts"
 },
 "permits": [
  {
   "number": "202401103708",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2024-01-10",
   "status_date": "2024-03-22",
   "estimated_cost": 20000,
   "revised_cost": 20000,
   "description": "2nd floor remodel bathroom in kind. no exterior changes proposed. no moving walls.",
   "source": "sf-building-permits"
  },
  {
   "number": "202008262666",
   "type": "otc alterations permit",
   "status": "withdrawn",
   "filed": "2020-08-26",
   "status_date": "2020-10-29",
   "revised_cost": 0,
   "description": "install gate at front - shared gate - replace existing gates. ref p.a 201910285721",
   "source": "sf-building-permits"
  },
  {
   "number": "201910285721",
   "type": "additions alterations or repairs",
   "status": "cancelled",
   "filed": "2019-10-28",
   "status_date": "2026-01-07",
   "estimated_cost": 310000,
   "revised_cost": 310000,
   "description": "(n) garage with (n) curb cut & driveway. excercise rm, bathroom & media room behind garage at ground level. (n) deck & guardrail on top of garage. reference to approved variance app #2018-008528var.",
   "source": "sf-building-permits"
  },
  {
   "number": "M1094067",
   "type": "otc alterations permit",
   "status": "issued",
   "filed": "2019-06-12",
   "status_date": "2019-06-12",
   "revised_cost": 1,
   "description": "street space",
   "source": "sf-building-permits"
  },
  {
   "number": "M1062767",
   "type": "otc alterations permit",
   "status": "issued",
   "filed": "2019-04-09",
   "status_date": "2019-04-09",
   "revised_cost": 0,
   "description": "street space",
   "source": "sf-building-permits"
  },
  {
   "number": "201902273900",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2019-02-27",
   "status_date": "2019-06-04",
   "estimated_cost": 1,
   "revised_cost": 1,
   "description": "to obtain finial inspection for work approved under pa# 2017-0407-3479. all work is complete.",
   "source": "sf-building-permits"
  },
  {
   "number": "201811297020",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2018-11-29",
   "status_date": "2019-05-13",
   "estimated_cost": 20000,
   "revised_cost": 30000,
   "description": "new deck at rear yard within setback line, small patio on grade off new deck. existing deck and stairs to remain.",
   "source": "sf-building-permits"
  },
  {
   "number": "201708256015",
   "type": "additions alterations or repairs",
   "status": "complete",
   "filed": "2017-08-25",
   "status_date": "2019-07-18",
   "estimated_cost": 15000,
   "revised_cost": 15000,
   "description": "repair (e) wood framed windows at gront of house; provide new window at level bathroom. repair other windows ash shown in kind.",
   "source": "sf-building-permits"
  },
  {
   "number": "201704073479",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2017-04-07",
   "status_date": "2019-06-04",
   "estimated_cost": 5000,
   "revised_cost": 5000,
   "description": "repair rear deck in kind less than 50%, deck is off 2nd floor, not visible from street.",
   "source": "sf-building-permits"
  },
  {
   "number": "M695307",
   "type": "otc alterations permit",
   "status": "issued",
   "filed": "2016-05-31",
   "status_date": "2016-05-31",
   "revised_cost": 1,
   "description": "street space",
   "source": "sf-building-permits"
  },
  {
   "number": "201605096971",
   "type": "additions alterations or repairs",
   "status": "filed",
   "filed": "2016-05-09",
   "status_date": "2016-05-09",
   "estimated_cost": 20000,
   "description": "due to rot, deterioration & lead paint hazards. replacement in kind of 8 windows. 4 in front bya, 1 in setback wall, 2 in interior lightwell, 1 in rear set back wall. replace in kind rear french door. new window install in upstairs bath. alteration to (e) rear deck.",
   "source": "sf-building-permits"
  },
  {
   "number": "201605036390",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2016-05-03",
   "status_date": "2016-06-28",
   "estimated_cost": 3000,
   "revised_cost": 3000,
   "description": "install one fire sprinkler and relocate one fire sprinkler. referenced ti 2016.0314.1977",
   "source": "sf-building-permits"
  },
  {
   "number": "201603141977",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2016-03-14",
   "status_date": "2016-07-07",
   "estimated_cost": 20000,
   "revised_cost": 20000,
   "description": "new full bathroom on 3rd floor, as per drawings. no structural work. no exterior work.",
   "source": "sf-building-permits"
  },
  {
   "number": "201411070990",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2014-11-07",
   "status_date": "2015-09-29",
   "estimated_cost": 5000,
   "revised_cost": 5000,
   "description": "as-built plans revision jto app#201408063207. change combo meter size from 2-inch to 1-1/2-inch and re calculate system.",
   "source": "sf-building-permits"
  },
  {
   "number": "201408063207",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2014-08-06",
   "status_date": "2016-06-28",
   "estimated_cost": 5000,
   "revised_cost": 10000,
   "description": "nfpa 13-r partial fire sprinkler system installation, top floor only including a 2\" combination copper 'k' underground installation. fdc req'd. ref. appl. #2014.0610.7982.",
   "source": "sf-building-permits"
  },
  {
   "number": "201406107982",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2014-06-10",
   "status_date": "2015-10-20",
   "estimated_cost": 15000,
   "revised_cost": 25000,
   "description": "new interior staircase from 2nd floor to attic floor. type 13r sprinklers provided by subcontractor on separate permit for upper floor only.",
   "source": "sf-building-permits"
  },
  {
   "number": "201406108045",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2014-06-10",
   "status_date": "2015-10-20",
   "estimated_cost": 1,
   "revised_cost": 1,
   "description": "keep flat ceiling over kitchen, remove skylights in kitchen from scope, correct address on plans. revision to 2014-0610-8045",
   "source": "sf-building-permits"
  },
  {
   "number": "201401146244",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2014-01-14",
   "status_date": "2015-10-20",
   "estimated_cost": 75000,
   "revised_cost": 75000,
   "description": "remodel @ 2nd fl. demo (e) interior walls & ceiling joist as shown for updated living space. (n) fixtures & finishes in kitchen. new sink in powder room. 2 (n) skylights in the 2nd fl & 2 (n) skylights in the attic. & insulation @ (e) attic space w/in roof.",
   "source": "sf-building-permits"
  },
  {
   "number": "201305318297",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "2013-05-31",
   "status_date": "2013-08-15",
   "estimated_cost": 8000,
   "revised_cost": 8000,
   "description": "dry rot repair to floor joists at the last 20' of the building on the right side (west side of bldg, south end), replace joists and ledge as required, sister to joists as rquired",
   "source": "sf-building-permits"
  },
  {
   "number": "9826026",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "1998-12-21",
   "status_date": "1999-05-19",
   "estimated_cost": 5000,
   "description": "exterior rear yard 2nd story access remove/repalce ext stair",
   "source": "sf-building-permits"
  },
  {
   "number": "9503574",
   "type": "otc alterations permit",
   "status": "complete",
   "filed": "1995-03-14",
   "status_date": "1995-04-25",
   "estimated_cost": 15000,
   "description": "restoration of partial foundation",
   "source": "sf-building-permits"
  },
  {
   "number": "8810012",
   "type": "additions alterations or repairs",
   "status": "complete",
   "filed": "1988-07-21",
   "status_date": "1988-10-20",
   "estimated_cost": 3800,
   "description": "replace damaged foundation wall",
   "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=20TH&street_type=ST&address_number=3733",
   "retrieved": "2026-07-31"
  },
  {
   "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=3607070&$order=closed_roll_year%20DESC&$limit=1",
   "retrieved": "2026-07-31"
  },
  {
   "id": "sf-building-permits",
   "name": "SF Dept. of Building Inspection via DataSF",
   "query": "https://data.sfgov.org/resource/i98e-djp9.json?block=3607&lot=070",
   "retrieved": "2026-07-31"
  },
  {
   "id": "sf-planning",
   "name": "SF Planning Department — Historic Resource Status by Parcel via DataSF",
   "query": "https://data.sfgov.org/resource/3tsw-4idn.json?apn=3607070",
   "retrieved": "2026-07-31"
  },
  {
   "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(-122.42426876385237%2037.75807348304145)%27)",
   "retrieved": "2026-07-31"
  },
  {
   "id": "lgbtq-context-statement",
   "name": "Donna J. Graves and Shayne E. Watson, Citywide Historic Context Statement for LGBTQ History in San Francisco, San Francisco Planning Department, adopted by the Historic Preservation Commission November 18, 2015",
   "query": "https://sfplanning.s3.amazonaws.com/default/files/Preservation/lgbt_HCS/FinalLGBTQ_HCS_March2016.pdf",
   "listing": "https://sfplanning.org/project/sf-histories-historic-context-statements#completed",
   "retrieved": "2026-08-30"
  }
 ],
 "historical_record": [
  {
   "date": "1961",
   "kind": "occupancy",
   "description": "Home of poet Robert Duncan and the artist Jess from 1961 to 1967.",
   "source": "lgbtq-context-statement"
  }
 ]
}