{
  "report": "2026 Los Angeles Home Addition Report",
  "source": {
    "portal": "data.lacity.org",
    "dataset": "pi9x-tg5x",
    "dataset_url": "https://data.lacity.org/City-Infrastructure-Service-Requests/Building-and-Safety-Building-Permits-Issued-from-2/pi9x-tg5x",
    "extract_date": "2026-10-31"
  },
  "measure": "Bldg-Addition permits on single-family houses that add living space and do not create or convert an ADU; revisions removed; classified from the work description; matched January 1 - cutoff window each year",
  "matched_window": "Jan 1 - 10-31",
  "caveats": [
    "Permits, not buildings: completion is not measured.",
    "Revisions of earlier permits are removed, identified by permit number and wording.",
    "Additions that create or convert an accessory dwelling unit (ADU/JADU) are excluded throughout; this report is about additions to the house.",
    "Patio covers, decks, trellises, carports and similar outdoor structures filed as additions are excluded from the living-space count.",
    "The source square_footage field is not the area added (it matches a stated addition size in only about 38% of permits that state one), so no size figures are published.",
    "Upper-floor and near-rebuild flags are read from free text and were hand-audited; shares carry small error rates.",
    "Near-rebuild counts are a floor: some are phrased in ways the rule does not catch, and those that also include an ADU are excluded.",
    "Application-to-issue days include time the application spends with the applicant, and cover only permits that were issued.",
    "Declared valuation is not used: it is a fee figure, not a construction cost."
  ],
  "counts": {
    "single_family_addition_permits": 22584,
    "revision": 2553,
    "renewal": 10,
    "living": 18294,
    "outdoor": 1727,
    "adu_linked_living_excluded": 3882,
    "adu_linked_near_rebuilds_excluded": 120,
    "same_parcel_repeats_removed": 97,
    "living_space_additions": 14326,
    "outdoor_only_additions": 1710,
    "new_house_permits": 8129
  },
  "additions_by_year": [
    {
      "year": 2020,
      "window": "Jan 1 - 10-31",
      "additions": 1450,
      "rest_of_city_additions": 1382,
      "new_houses": 907,
      "rest_of_city_new_houses": 860,
      "additions_per_new_house_rest_of_city": 1.61,
      "upper_floor_additions": 283,
      "upper_floor_pct": 19.5,
      "near_rebuilds": 18,
      "outdoor_only": 160,
      "additions_full_year": 1736
    },
    {
      "year": 2021,
      "window": "Jan 1 - 10-31",
      "additions": 1881,
      "rest_of_city_additions": 1796,
      "new_houses": 907,
      "rest_of_city_new_houses": 856,
      "additions_per_new_house_rest_of_city": 2.1,
      "upper_floor_additions": 306,
      "upper_floor_pct": 16.3,
      "near_rebuilds": 30,
      "outdoor_only": 230,
      "additions_full_year": 2271
    },
    {
      "year": 2022,
      "window": "Jan 1 - 10-31",
      "additions": 2328,
      "rest_of_city_additions": 2240,
      "new_houses": 1093,
      "rest_of_city_new_houses": 1028,
      "additions_per_new_house_rest_of_city": 2.18,
      "upper_floor_additions": 382,
      "upper_floor_pct": 16.4,
      "near_rebuilds": 32,
      "outdoor_only": 258,
      "additions_full_year": 2714
    },
    {
      "year": 2023,
      "window": "Jan 1 - 10-31",
      "additions": 1785,
      "rest_of_city_additions": 1690,
      "new_houses": 941,
      "rest_of_city_new_houses": 886,
      "additions_per_new_house_rest_of_city": 1.91,
      "upper_floor_additions": 289,
      "upper_floor_pct": 16.2,
      "near_rebuilds": 21,
      "outdoor_only": 240,
      "additions_full_year": 2068
    },
    {
      "year": 2024,
      "window": "Jan 1 - 10-31",
      "additions": 1804,
      "rest_of_city_additions": 1733,
      "new_houses": 771,
      "rest_of_city_new_houses": 727,
      "additions_per_new_house_rest_of_city": 2.38,
      "upper_floor_additions": 298,
      "upper_floor_pct": 16.5,
      "near_rebuilds": 38,
      "outdoor_only": 216,
      "additions_full_year": 2135
    },
    {
      "year": 2025,
      "window": "Jan 1 - 10-31",
      "additions": 1689,
      "rest_of_city_additions": 1627,
      "new_houses": 1101,
      "rest_of_city_new_houses": 716,
      "additions_per_new_house_rest_of_city": 2.27,
      "upper_floor_additions": 280,
      "upper_floor_pct": 16.6,
      "near_rebuilds": 56,
      "outdoor_only": 199,
      "additions_full_year": 1950
    },
    {
      "year": 2026,
      "window": "Jan 1 - 10-31",
      "additions": 1452,
      "rest_of_city_additions": 1381,
      "new_houses": 1376,
      "rest_of_city_new_houses": 504,
      "additions_per_new_house_rest_of_city": 2.74,
      "upper_floor_additions": 222,
      "upper_floor_pct": 15.3,
      "near_rebuilds": 31,
      "outdoor_only": 182,
      "additions_full_year": null
    }
  ],
  "by_community_plan_area": [
    {
      "community_plan_area": "Arleta - Pacoima",
      "additions_since_2023": 154,
      "new_houses_since_2023": 66,
      "additions_per_new_house": 2.33,
      "upper_floor_pct": 6.5,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Bel Air - Beverly Crest",
      "additions_since_2023": 174,
      "new_houses_since_2023": 67,
      "additions_per_new_house": 2.6,
      "upper_floor_pct": 31,
      "near_rebuilds_since_2023": 1,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Boyle Heights",
      "additions_since_2023": 31,
      "new_houses_since_2023": 10,
      "additions_per_new_house": null,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 1,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Brentwood - Pacific Palisades",
      "additions_since_2023": 339,
      "new_houses_since_2023": 1533,
      "additions_per_new_house": 0.22,
      "upper_floor_pct": 28.6,
      "near_rebuilds_since_2023": 5,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Canoga Park-West Hills-Winnetka-Woodland Hills",
      "additions_since_2023": 565,
      "new_houses_since_2023": 139,
      "additions_per_new_house": 4.06,
      "upper_floor_pct": 8.8,
      "near_rebuilds_since_2023": 15,
      "near_rebuild_share_of_rebuilds_pct": 9.7
    },
    {
      "community_plan_area": "Chatsworth - Porter Ranch",
      "additions_since_2023": 180,
      "new_houses_since_2023": 238,
      "additions_per_new_house": 0.76,
      "upper_floor_pct": 15.6,
      "near_rebuilds_since_2023": 1,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Encino - Tarzana",
      "additions_since_2023": 406,
      "new_houses_since_2023": 173,
      "additions_per_new_house": 2.35,
      "upper_floor_pct": 16.7,
      "near_rebuilds_since_2023": 28,
      "near_rebuild_share_of_rebuilds_pct": 13.9
    },
    {
      "community_plan_area": "Granada Hills - Knollwood",
      "additions_since_2023": 239,
      "new_houses_since_2023": 61,
      "additions_per_new_house": 3.92,
      "upper_floor_pct": 6.3,
      "near_rebuilds_since_2023": 4,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Harbor Gateway",
      "additions_since_2023": 52,
      "new_houses_since_2023": 31,
      "additions_per_new_house": null,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 1,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Hollywood",
      "additions_since_2023": 286,
      "new_houses_since_2023": 154,
      "additions_per_new_house": 1.86,
      "upper_floor_pct": 29.4,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Mission Hills - Panorama City - North Hills",
      "additions_since_2023": 175,
      "new_houses_since_2023": 82,
      "additions_per_new_house": 2.13,
      "upper_floor_pct": 5.7,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "North Hollywood - Valley Village",
      "additions_since_2023": 332,
      "new_houses_since_2023": 127,
      "additions_per_new_house": 2.61,
      "upper_floor_pct": 10.2,
      "near_rebuilds_since_2023": 14,
      "near_rebuild_share_of_rebuilds_pct": 9.9
    },
    {
      "community_plan_area": "Northeast Los Angeles",
      "additions_since_2023": 500,
      "new_houses_since_2023": 253,
      "additions_per_new_house": 1.98,
      "upper_floor_pct": 16,
      "near_rebuilds_since_2023": 4,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Northridge",
      "additions_since_2023": 167,
      "new_houses_since_2023": 56,
      "additions_per_new_house": 2.98,
      "upper_floor_pct": 7.2,
      "near_rebuilds_since_2023": 3,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Palms - Mar Vista - Del Rey",
      "additions_since_2023": 380,
      "new_houses_since_2023": 108,
      "additions_per_new_house": 3.52,
      "upper_floor_pct": 24.7,
      "near_rebuilds_since_2023": 16,
      "near_rebuild_share_of_rebuilds_pct": 12.9
    },
    {
      "community_plan_area": "Reseda - West Van Nuys",
      "additions_since_2023": 322,
      "new_houses_since_2023": 115,
      "additions_per_new_house": 2.8,
      "upper_floor_pct": 5.9,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "San Pedro",
      "additions_since_2023": 84,
      "new_houses_since_2023": 11,
      "additions_per_new_house": null,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 0,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Sherman Oaks-Studio City-Toluca Lake-Cahuenga Pass",
      "additions_since_2023": 342,
      "new_houses_since_2023": 204,
      "additions_per_new_house": 1.68,
      "upper_floor_pct": 24.9,
      "near_rebuilds_since_2023": 14,
      "near_rebuild_share_of_rebuilds_pct": 6.4
    },
    {
      "community_plan_area": "Silver Lake - Echo Park - Elysian Valley",
      "additions_since_2023": 146,
      "new_houses_since_2023": 195,
      "additions_per_new_house": 0.75,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "South Los Angeles",
      "additions_since_2023": 210,
      "new_houses_since_2023": 58,
      "additions_per_new_house": 3.62,
      "upper_floor_pct": 8.6,
      "near_rebuilds_since_2023": 0,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Southeast Los Angeles",
      "additions_since_2023": 129,
      "new_houses_since_2023": 94,
      "additions_per_new_house": 1.37,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 1,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Sun Valley - La Tuna Canyon",
      "additions_since_2023": 257,
      "new_houses_since_2023": 116,
      "additions_per_new_house": 2.22,
      "upper_floor_pct": 4.7,
      "near_rebuilds_since_2023": 4,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Sunland-E LaTuna Cyn-Lakevw Ter-Shadow Hls-Tujunga",
      "additions_since_2023": 206,
      "new_houses_since_2023": 98,
      "additions_per_new_house": 2.1,
      "upper_floor_pct": 7.8,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Sylmar",
      "additions_since_2023": 103,
      "new_houses_since_2023": 41,
      "additions_per_new_house": null,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 0,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Van Nuys - North Sherman Oaks",
      "additions_since_2023": 416,
      "new_houses_since_2023": 197,
      "additions_per_new_house": 2.11,
      "upper_floor_pct": 6.3,
      "near_rebuilds_since_2023": 17,
      "near_rebuild_share_of_rebuilds_pct": 7.9
    },
    {
      "community_plan_area": "Venice",
      "additions_since_2023": 109,
      "new_houses_since_2023": 49,
      "additions_per_new_house": 2.22,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 3,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "West Adams - Baldwin Hills - Leimert",
      "additions_since_2023": 331,
      "new_houses_since_2023": 96,
      "additions_per_new_house": 3.45,
      "upper_floor_pct": 14.5,
      "near_rebuilds_since_2023": 0,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "West Los Angeles",
      "additions_since_2023": 238,
      "new_houses_since_2023": 122,
      "additions_per_new_house": 1.95,
      "upper_floor_pct": 33.6,
      "near_rebuilds_since_2023": 8,
      "near_rebuild_share_of_rebuilds_pct": 6.2
    },
    {
      "community_plan_area": "Westchester - Playa del Rey",
      "additions_since_2023": 278,
      "new_houses_since_2023": 17,
      "additions_per_new_house": 16.35,
      "upper_floor_pct": 19.4,
      "near_rebuilds_since_2023": 5,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Westlake",
      "additions_since_2023": 9,
      "new_houses_since_2023": 11,
      "additions_per_new_house": null,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 0,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Westwood",
      "additions_since_2023": 83,
      "new_houses_since_2023": 35,
      "additions_per_new_house": null,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 2,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Wilmington - Harbor City",
      "additions_since_2023": 56,
      "new_houses_since_2023": 114,
      "additions_per_new_house": 0.49,
      "upper_floor_pct": null,
      "near_rebuilds_since_2023": 0,
      "near_rebuild_share_of_rebuilds_pct": null
    },
    {
      "community_plan_area": "Wilshire",
      "additions_since_2023": 305,
      "new_houses_since_2023": 49,
      "additions_per_new_house": 6.22,
      "upper_floor_pct": 30.2,
      "near_rebuilds_since_2023": 3,
      "near_rebuild_share_of_rebuilds_pct": null
    }
  ],
  "near_rebuilds": {
    "total": 259,
    "by_year_full": {
      "2020": 24,
      "2021": 35,
      "2022": 38,
      "2023": 26,
      "2024": 43,
      "2025": 62,
      "2026": 31
    },
    "kept_length_stated": 240,
    "median_kept_ft": 9.92,
    "quarter_kept_at_most_ft": 4,
    "three_quarters_kept_at_most_ft": 23.83,
    "kept_2ft_or_less": 40,
    "kept_5ft_or_less": 85,
    "since_2023": 162,
    "share_of_rebuilds_since_2023_pct": 3.3,
    "share_of_rebuilds_since_2023_excl_palisades_pct": 4.7,
    "adu_linked_near_rebuilds_excluded": 120
  },
  "approval_days_since_2023": [
    {
      "addition_type": "Ground floor only",
      "permits": 6207,
      "median_days": 103,
      "p25_days": 45,
      "p75_days": 225
    },
    {
      "addition_type": "Upper floor",
      "permits": 1236,
      "median_days": 202,
      "p25_days": 118,
      "p75_days": 385
    },
    {
      "addition_type": "Near-rebuild",
      "permits": 162,
      "median_days": 133,
      "p25_days": 80,
      "p75_days": 217
    }
  ],
  "upper_floor_share_all_years_pct": 16.6
}