{ "page": { "schema_version": 2, "tenant": "aubree-chavarriga", "community": { "slug": "altadena", "name": "Altadena", "kind": "cdp", "jurisdiction": null, "county": "Los Angeles", "state": "CA", "postal_codes": [ "91001" ], "tier": 1 }, "intent": "homes-for-sale", "as_of": "2026-10-21", "module_flags_sha256": "886b0fcf2449ff8892a5d1ffac2a2d96060d7f5a598da9e971a547436937db44", "gate": { "indexable": false, "tier": 1, "reasons": [ "populated_data_modules 0 < 3 (missing: summary_sale, market_buy, faq_sale)", "module_disabled:summary_sale (RE-45: feeds.module_flags docs-only, never guessed)", "module_disabled:market_buy (RE-45: feeds.module_flags docs-only, never guessed)", "module_disabled:faq_sale (RE-45: feeds.module_flags docs-only, never guessed)", "url_unique_modules 0 < 2", "held:missing_human_note" ] }, "facts": { "geo.land_sq_mi": { "source_layer": "tigerweb_place", "source_name": "U.S. Census Bureau TIGERweb", "license": "US Government work (public domain, 17 U.S.C. 105); credit U.S. Census Bureau", "n": null, "value": 8.5, "display": "8.5", "unit": "square miles", "as_of": "2020-04-01", "window": "2020 Census geography", "label": "Land area inside Altadena", "geography": "Altadena Census place boundary" }, "geo.geography_type": { "source_layer": "tigerweb_place", "source_name": "U.S. Census Bureau TIGERweb", "license": "US Government work (public domain, 17 U.S.C. 105); credit U.S. Census Bureau", "n": null, "value": "Census Designated Place", "display": "Census Designated Place", "unit": null, "as_of": "2026-10-21", "window": "current boundaries retrieved 2026-10-21", "label": "Census geography type that defines the boundary used for the statistics of Altadena", "geography": "Altadena Census place boundary" }, "poi.parks_count": { "source_layer": "osm_overpass", "source_name": "OpenStreetMap", "license": "ODbL 1.0; credit (c) OpenStreetMap contributors", "n": null, "as_of": "2026-10-21", "window": "snapshot 2026-10-21", "value": 4, "display": "4", "unit": "named parks", "label": "Named parks mapped in OpenStreetMap inside the boundary of Altadena", "geography": "Altadena Census place boundary" }, "poi.parks_listed": { "source_layer": "osm_overpass", "source_name": "OpenStreetMap", "license": "ODbL 1.0; credit (c) OpenStreetMap contributors", "n": null, "as_of": "2026-10-21", "window": "snapshot 2026-10-21", "value": [ "Charles S. Farnsworth Park", "Charles White Park", "Loma Alta Park", "Mount Lowe Park" ], "display": "Charles S. Farnsworth Park, Charles White Park, Loma Alta Park, Mount Lowe Park", "unit": null, "label": "Names of up to 8 of those parks, in alphabetical order", "geography": "Altadena Census place boundary" }, "poi.libraries_count": { "source_layer": "osm_overpass", "source_name": "OpenStreetMap", "license": "ODbL 1.0; credit (c) OpenStreetMap contributors", "n": null, "as_of": "2026-10-21", "window": "snapshot 2026-10-21", "value": 1, "display": "1", "unit": "named libraries", "label": "Named libraries mapped in OpenStreetMap inside the boundary of Altadena", "geography": "Altadena Census place boundary" }, "poi.libraries_listed": { "source_layer": "osm_overpass", "source_name": "OpenStreetMap", "license": "ODbL 1.0; credit (c) OpenStreetMap contributors", "n": null, "as_of": "2026-10-21", "window": "snapshot 2026-10-21", "value": [ "Altadena Public Library" ], "display": "Altadena Public Library", "unit": null, "label": "Names of up to 4 of those libraries, in alphabetical order", "geography": "Altadena Census place boundary" }, "geo.county": { "source_layer": "tigerweb_place", "source_name": "U.S. Census Bureau TIGERweb", "license": "US Government work (public domain, 17 U.S.C. 105); credit U.S. Census Bureau", "n": null, "as_of": "2026-10-21", "window": "current boundaries retrieved 2026-10-21", "value": "Los Angeles", "display": "Los Angeles County", "unit": null, "label": "County that contains the interior point of Altadena", "geography": "Altadena Census place boundary" }, "geo.unincorporated_share_pct": { "source_layer": "tigerweb_place", "source_name": "U.S. Census Bureau TIGERweb", "license": "US Government work (public domain, 17 U.S.C. 105); credit U.S. Census Bureau", "n": null, "as_of": "2026-10-21", "window": "current boundaries retrieved 2026-10-21", "value": 99.7, "display": "99.7", "unit": "percent of sampled boundary area", "label": "Share of Altadena outside every incorporated city (grid sample of 920 points)", "geography": "Altadena Census place boundary" }, "acs.pop_est": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 41705, "display": "41,705", "unit": "people", "label": "Estimated population of Altadena (ACS estimate; margin of error +/-2,203)", "geography": "Altadena Census place" }, "acs.hu_est": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 15815, "display": "15,815", "unit": "housing units", "label": "Estimated housing units in Altadena (ACS table B25001)", "geography": "Altadena Census place" }, "acs.housing.occupied": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 15092, "display": "15,092", "unit": "occupied housing units", "label": "Estimated occupied housing units in Altadena (ACS table B25003)", "geography": "Altadena Census place" }, "acs.housing.owner_count": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 11603, "display": "11,603", "unit": "owner-occupied units", "label": "Estimated owner-occupied housing units in Altadena", "geography": "Altadena Census place" }, "acs.housing.renter_count": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 3489, "display": "3,489", "unit": "renter-occupied units", "label": "Estimated renter-occupied housing units in Altadena", "geography": "Altadena Census place" }, "acs.housing.owner_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 76.9, "display": "76.9", "unit": "percent of occupied housing units", "label": "Share of occupied housing units that are owner-occupied in Altadena (computed in code from two ACS counts)", "geography": "Altadena Census place" }, "acs.housing.renter_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 23.1, "display": "23.1", "unit": "percent of occupied housing units", "label": "Share of occupied housing units that are renter-occupied in Altadena (computed in code from two ACS counts)", "geography": "Altadena Census place" }, "acs.housing.median_year_built": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 1946, "display": "1946", "unit": "year", "label": "Median year the housing structures in Altadena were built (ACS table B25035)", "geography": "Altadena Census place" }, "acs.housing.median_value": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 1120000, "display": "$1,120,000", "unit": "US dollars", "label": "Median value of owner-occupied housing units in Altadena (ACS table B25077; owner-reported; margin of error +/-$29,753)", "geography": "Altadena Census place" }, "acs.housing.median_rent": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 2355, "display": "$2,355", "unit": "US dollars per month", "label": "Median gross rent in Altadena (ACS table B25064; margin of error +/-$174)", "geography": "Altadena Census place" }, "acs.commute.workers": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 15111, "display": "15,111", "unit": "workers", "label": "Workers aged 16 and over who do not work from home, with a reported travel time (ACS table B08303), in Altadena", "geography": "Altadena Census place" }, "acs.commute.under20_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 38.7, "display": "38.7", "unit": "percent of commuting workers", "label": "Share of commuting workers with a one-way commute under 20 minutes in Altadena (computed in code from ACS B08303 bins)", "geography": "Altadena Census place" }, "acs.commute.20_44_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 43.5, "display": "43.5", "unit": "percent of commuting workers", "label": "Share of commuting workers with a one-way commute of 20 to 44 minutes in Altadena (computed in code from ACS B08303 bins)", "geography": "Altadena Census place" }, "acs.commute.45plus_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 17.8, "display": "17.8", "unit": "percent of commuting workers", "label": "Share of commuting workers with a one-way commute of 45 minutes or more in Altadena (computed in code from ACS B08303 bins)", "geography": "Altadena Census place" }, "acs.commute.drive_alone_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 62.3, "display": "62.3", "unit": "percent of workers", "label": "Share of workers aged 16 and over who drive alone to work in Altadena (computed in code from ACS table B08301)", "geography": "Altadena Census place" }, "acs.commute.carpool_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 6.4, "display": "6.4", "unit": "percent of workers", "label": "Share of workers aged 16 and over who carpool to work in Altadena (computed in code from ACS table B08301)", "geography": "Altadena Census place" }, "acs.commute.transit_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 1.5, "display": "1.5", "unit": "percent of workers", "label": "Share of workers aged 16 and over who take public transportation to work in Altadena (computed in code from ACS table B08301)", "geography": "Altadena Census place" }, "acs.commute.walk_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 0.7, "display": "0.7", "unit": "percent of workers", "label": "Share of workers aged 16 and over who walk to work in Altadena (computed in code from ACS table B08301)", "geography": "Altadena Census place" }, "acs.commute.home_share": { "source_layer": "census_acs5", "source_name": "U.S. Census Bureau American Community Survey 5-year", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "n": null, "as_of": "2024-12-31", "window": "2020-2024 ACS 5-year estimates", "value": 25.4, "display": "25.4", "unit": "percent of workers", "label": "Share of workers aged 16 and over who work from home in Altadena (computed in code from ACS table B08301)", "geography": "Altadena Census place" }, "haz.fhsz.very_high_pct": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": 27.8, "display": "27.8", "unit": "percent of sampled boundary area", "label": "Share of Altadena inside a CAL FIRE Very High Fire Hazard Severity Zone (grid sample of 920 points on a 40 by 40 grid)", "geography": "Altadena Census place boundary" }, "haz.fhsz.high_pct": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": 0, "display": "0.0", "unit": "percent of sampled boundary area", "label": "Share of Altadena inside a CAL FIRE High Fire Hazard Severity Zone (grid sample of 920 points on a 40 by 40 grid)", "geography": "Altadena Census place boundary" }, "haz.fhsz.moderate_pct": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": 0, "display": "0.0", "unit": "percent of sampled boundary area", "label": "Share of Altadena inside a CAL FIRE Moderate Fire Hazard Severity Zone (grid sample of 920 points on a 40 by 40 grid)", "geography": "Altadena Census place boundary" }, "haz.fhsz.federal_pct": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": 6.2, "display": "6.2", "unit": "percent of sampled boundary area", "label": "Share of Altadena inside a Federal Responsibility Area (CAL FIRE assigns no hazard class there) (grid sample of 920 points on a 40 by 40 grid)", "geography": "Altadena Census place boundary" }, "haz.fhsz.none_pct": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": 66, "display": "66.0", "unit": "percent of sampled boundary area", "label": "Share of Altadena outside every mapped CAL FIRE Fire Hazard Severity Zone polygon (grid sample of 920 points on a 40 by 40 grid)", "geography": "Altadena Census place boundary" }, "haz.fhsz.responsibility_areas": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": [ "FRA", "LRA", "SRA" ], "display": "FRA, LRA, SRA", "unit": null, "label": "Responsibility areas (SRA state, LRA local, FRA federal) of the mapped zones inside Altadena", "geography": "Altadena Census place boundary" }, "haz.fhsz.map_vintage": { "source_layer": "calfire_fhsz", "source_name": "CAL FIRE Fire Hazard Severity Zones", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "n": null, "as_of": "2026-10-21", "window": "maps adopted SRA 2007, LRA 2011", "value": "SRA 2007, LRA 2011", "display": "SRA 2007, LRA 2011", "unit": null, "label": "Map vintages named in the CAL FIRE layer titles: State Responsibility Areas (2007), Local Responsibility Areas (2011)", "geography": "Altadena Census place boundary" }, "haz.flood.sfha_pct": { "source_layer": "fema_nfhl", "source_name": "FEMA National Flood Hazard Layer", "license": "US Government work (17 U.S.C. 105); FEMA.gov reuse statement", "n": null, "as_of": "2026-10-21", "window": "NFHL data retrieved 2026-10-21", "value": 0, "display": "0.0", "unit": "percent of sampled boundary area", "label": "Share of Altadena inside a FEMA Special Flood Hazard Area (grid sample of 920 points)", "geography": "Altadena Census place boundary" }, "haz.flood.x_shaded_pct": { "source_layer": "fema_nfhl", "source_name": "FEMA National Flood Hazard Layer", "license": "US Government work (17 U.S.C. 105); FEMA.gov reuse statement", "n": null, "as_of": "2026-10-21", "window": "NFHL data retrieved 2026-10-21", "value": 0.3, "display": "0.3", "unit": "percent of sampled boundary area", "label": "Share of Altadena in FEMA flood zone X shaded (0.2 percent annual chance) (grid sample of 920 points)", "geography": "Altadena Census place boundary" }, "haz.flood.x_unshaded_pct": { "source_layer": "fema_nfhl", "source_name": "FEMA National Flood Hazard Layer", "license": "US Government work (17 U.S.C. 105); FEMA.gov reuse statement", "n": null, "as_of": "2026-10-21", "window": "NFHL data retrieved 2026-10-21", "value": 78, "display": "78.0", "unit": "percent of sampled boundary area", "label": "Share of Altadena in FEMA flood zone X unshaded (minimal mapped hazard) (grid sample of 920 points)", "geography": "Altadena Census place boundary" }, "haz.flood.not_digitized_pct": { "source_layer": "fema_nfhl", "source_name": "FEMA National Flood Hazard Layer", "license": "US Government work (17 U.S.C. 105); FEMA.gov reuse statement", "n": null, "as_of": "2026-10-21", "window": "NFHL data retrieved 2026-10-21", "value": 0, "display": "0.0", "unit": "percent of sampled boundary area", "label": "Share of Altadena with no digitized FEMA flood zone polygon (grid sample of 920 points)", "geography": "Altadena Census place boundary" }, "haz.flood.other_class_pct": { "source_layer": "fema_nfhl", "source_name": "FEMA National Flood Hazard Layer", "license": "US Government work (17 U.S.C. 105); FEMA.gov reuse statement", "n": null, "as_of": "2026-10-21", "window": "NFHL data retrieved 2026-10-21", "value": 21.6, "display": "21.6", "unit": "percent of sampled boundary area", "label": "Share of Altadena in any other mapped FEMA flood zone class (for example zone D, areas not included) (grid sample of 920 points)", "geography": "Altadena Census place boundary" }, "school.count": { "source_layer": "nces_edge", "source_name": "NCES EDGE public school locations", "license": "US Government work, public domain (IES permission-to-replicate statement)", "n": null, "as_of": "2026-10-21", "window": "school year 2024-2025", "value": 5, "display": "5", "unit": "public schools", "label": "Public school locations (NCES EDGE) inside the boundary of Altadena", "geography": "Altadena Census place boundary" }, "school.names_listed": { "source_layer": "nces_edge", "source_name": "NCES EDGE public school locations", "license": "US Government work, public domain (IES permission-to-replicate statement)", "n": null, "as_of": "2026-10-21", "window": "school year 2024-2025", "value": [ "Altadena Elementary", "Charles W. Eliot Middle", "Mary W. Jackson STEAM Multilingual Magnet Elementary", "OCS - South", "Webster Elementary" ], "display": "Altadena Elementary, Charles W. Eliot Middle, Mary W. Jackson STEAM Multilingual Magnet Elementary, OCS - South, Webster Elementary", "unit": null, "label": "Names of up to 8 of those public schools, alphabetical (no ratings or quality information)", "geography": "Altadena Census place boundary" }, "school.district_ids": { "source_layer": "nces_edge", "source_name": "NCES EDGE public school locations", "license": "US Government work, public domain (IES permission-to-replicate statement)", "n": null, "as_of": "2026-10-21", "window": "school year 2024-2025", "value": 2, "display": "2", "unit": "school district identifiers", "label": "Distinct NCES school district (LEA) identifiers among those schools", "geography": "Altadena Census place boundary" }, "elev.min_ft": { "source_layer": "usgs_epqs", "source_name": "USGS 3DEP Elevation Point Query Service", "license": "US Government work, U.S. Public Domain", "n": null, "as_of": "2026-10-21", "window": "elevation sampled 2026-10-21", "value": 947, "display": "947", "unit": "feet", "label": "Lowest sampled ground elevation above sea level (27 grid points inside Altadena)", "geography": "Altadena Census place boundary" }, "elev.max_ft": { "source_layer": "usgs_epqs", "source_name": "USGS 3DEP Elevation Point Query Service", "license": "US Government work, U.S. Public Domain", "n": null, "as_of": "2026-10-21", "window": "elevation sampled 2026-10-21", "value": 1990, "display": "1,990", "unit": "feet", "label": "Highest sampled ground elevation above sea level (27 grid points inside Altadena)", "geography": "Altadena Census place boundary" }, "elev.median_ft": { "source_layer": "usgs_epqs", "source_name": "USGS 3DEP Elevation Point Query Service", "license": "US Government work, U.S. Public Domain", "n": null, "as_of": "2026-10-21", "window": "elevation sampled 2026-10-21", "value": 1273, "display": "1,273", "unit": "feet", "label": "Median sampled ground elevation above sea level (27 grid points inside Altadena)", "geography": "Altadena Census place boundary" }, "elev.range_ft": { "source_layer": "usgs_epqs", "source_name": "USGS 3DEP Elevation Point Query Service", "license": "US Government work, U.S. Public Domain", "n": null, "as_of": "2026-10-21", "window": "elevation sampled 2026-10-21", "value": 1043, "display": "1,043", "unit": "feet", "label": "Difference between highest and lowest sampled elevation (27 grid points inside Altadena)", "geography": "Altadena Census place boundary" } }, "citation_sentences": [], "modules": { "summary_sale": { "text": "Live listings for Altadena are coming soon. For current homes in Altadena, contact Aubree Chavarriga. Until the feed is live, this page gives public-data context for buyers: housing stock, ownership, home age and hazard information, each with its source and date.", "derived": true }, "market_buy": null, "faq_sale": { "items": [ { "q": "What is the median value of owner-occupied homes in Altadena?", "a": "In the Altadena Census place, the median value of owner-occupied homes is $1,120,000 (American Community Survey, 2020-2024). That figure is an owner-reported survey estimate for the whole area, not a sale price or a listing price for any single home." }, { "q": "What share of Altadena lies in a CAL FIRE Very High Fire Hazard Severity Zone?", "a": "In the Altadena Census place boundary, 27.8 percent of the sampled area is in a CAL FIRE Very High Fire Hazard Severity Zone (CAL FIRE, maps adopted SRA 2007, LRA 2011). The share comes from a grid sample of the boundary." }, { "q": "Which public schools are located in Altadena?", "a": "NCES lists 5 public school locations in the Altadena Census place boundary (NCES EDGE public school locations, school year 2024-2025). Examples are Altadena Elementary, Charles W. Eliot Middle and Mary W. Jackson STEAM Multilingual Magnet Elementary. Verify attendance boundaries with the school district." }, { "q": "How old are the homes in Altadena?", "a": "In the Altadena Census place, the median year homes were built is 1946 (American Community Survey, 2020-2024). That is the median across all housing structures in the area, so it describes the full housing stock rather than any one home." } ], "audience": "buyer", "derived": false }, "nearby": [ { "slug": "pasadena", "relation": "adjacent" }, { "slug": "glendale", "relation": "also" }, { "slug": "la-crescenta-montrose", "relation": "also" }, { "slug": "lake-view-terrace", "relation": "also" }, { "slug": "shadow-hills", "relation": "also" }, { "slug": "sunland", "relation": "also" }, { "slug": "sylmar", "relation": "also" }, { "slug": "tujunga", "relation": "also" } ], "market_context": { "heading": "Buying in Altadena: Census reference points", "rows": [ { "label": "Median home value (owner-reported)", "value": "$1,120,000", "source": "Census ACS 5-year, 2020-2024", "as_of": "2024-12-31" }, { "label": "Owner-occupied share of occupied homes", "value": "76.9%", "source": "Census ACS 5-year, 2020-2024", "as_of": "2024-12-31" }, { "label": "Owner-occupied housing units", "value": "11,603", "source": "Census ACS 5-year, 2020-2024", "as_of": "2024-12-31" }, { "label": "Median year homes were built", "value": "1946", "source": "Census ACS 5-year, 2020-2024", "as_of": "2024-12-31" }, { "label": "Housing units (ACS estimate)", "value": "15,815", "source": "Census ACS 5-year, 2020-2024", "as_of": "2024-12-31" } ], "text": "The median value of owner-occupied homes in Altadena Census place is $1,120,000 (U.S. Census Bureau American Community Survey 5-year, 2020-2024 ACS 5-year estimates; an owner-reported estimate, not a sale price). 76.9 percent of occupied homes in Altadena Census place are owner-occupied, an estimated 11,603 homes (U.S. Census Bureau American Community Survey 5-year, 2020-2024 ACS 5-year estimates). The median year the homes in Altadena Census place were built is 1946 (U.S. Census Bureau American Community Survey 5-year, 2020-2024 ACS 5-year estimates). The survey estimates 15,815 housing units in Altadena Census place (U.S. Census Bureau American Community Survey 5-year, 2020-2024 ACS 5-year estimates).", "note": "Active-listing and sold-price statistics are not shown because the MLS feed is not approved yet; these are survey reference points, not market prices." }, "guide": { "heading": "What should a buyer check in Altadena?", "items": [ "Hazard zones. Zone shares describe the area, not one property: 27.8 percent inside a CAL FIRE Very High Fire Hazard Severity Zone (SRA 2007, LRA 2011) and 0.0 percent inside a FEMA Special Flood Hazard Area. Confirm the zones for a specific parcel during due diligence.", "Home age. The median home here was built in 1946. Ask what has been updated (roof, electrical, plumbing, foundation) and read the inspection reports.", "Cost. Price is one part of monthly cost. Include property tax, insurance and any HOA dues, then compare with renting in the calculator below." ] }, "own_vs_rent_inputs": { "status": "inputs_only", "as_of": "2026-10-21", "formula_version": 1, "note": "Inputs for a client-side calculator and a static worked example. The model computes nothing; code does. No result is shown as advice.", "buyer": { "home_price": { "fact_id": "acs.housing.median_value", "value": 1120000, "display": "$1,120,000", "unit": "US dollars", "basis": "ACS median value of owner-occupied homes (survey estimate); editable", "geography": "Altadena Census place", "editable": true }, "down_payment_pct": { "value": 20, "unit": "percent", "basis": "editable default, not a recommendation", "editable": true }, "term_years": { "value": 30, "unit": "years", "basis": "editable default", "editable": true }, "interest_rate_pct": { "value": null, "unit": "percent per year", "basis": "enter a current published rate; no licensed rate source is wired", "editable": true }, "property_tax_rate_pct": { "value": 1, "unit": "percent of assessed value per year", "basis": "California base rate under Cal. Const. art. XIII A sec. 1; local voter-approved and direct assessments are extra and not included", "editable": true }, "insurance_annual": { "value": null, "unit": "US dollars per year", "basis": "user quote; no figure is bundled because insurance cost varies by property", "editable": true }, "hoa_monthly": { "value": null, "unit": "US dollars per month", "basis": "from the listing when one is chosen", "editable": true } }, "renter": { "monthly_rent": { "fact_id": "acs.housing.median_rent", "value": 2355, "display": "$2,355", "unit": "US dollars per month", "basis": "ACS median gross rent (survey estimate); editable", "geography": "Altadena Census place", "editable": true }, "renters_insurance_monthly": { "value": null, "unit": "US dollars per month", "basis": "user quote; none bundled", "editable": true } }, "formulas": { "loan_amount": "home_price * (1 - down_payment_pct / 100)", "monthly_principal_interest": "loan_amount * r / (1 - (1 + r) ^ -n), r = interest_rate_pct / 1200, n = term_years * 12", "monthly_property_tax": "home_price * property_tax_rate_pct / 1200", "monthly_owner_cost": "monthly_principal_interest + monthly_property_tax + insurance_annual / 12 + hoa_monthly", "monthly_renter_cost": "monthly_rent + renters_insurance_monthly" } }, "own_vs_rent": { "text": "The calculator below starts from public figures for Altadena, and every value is editable: home price $1,120,000 (ACS median value of owner-occupied homes (survey estimate), Altadena Census place); down payment 20 percent and a 30-year term (editable defaults, not recommendations); property tax at 1 percent of price (the California base rate; local assessments are extra); monthly rent $2,355 (ACS median gross rent (survey estimate), Altadena Census place). Interest rate, home insurance, HOA dues, renters insurance are left blank because no licensed rate source is connected and these vary by borrower and property; enter your own figures to see a monthly cost. Nothing is stored or sent.", "derived": true, "from_inputs": true } }, "sources": [ { "layer": "tigerweb_place", "license": "US Government work (public domain, 17 U.S.C. 105); credit U.S. Census Bureau", "as_of": "2026-10-21" }, { "layer": "osm_overpass", "license": "ODbL 1.0; credit (c) OpenStreetMap contributors", "as_of": "2026-10-21" }, { "layer": "census_acs5", "license": "US Government work (public domain); Census Bureau Data API terms: attribution notice required", "as_of": "2026-10-21" }, { "layer": "calfire_fhsz", "license": "No restrictions on distribution; cite California Department of Forestry and Fire Protection as the original source", "as_of": "2026-10-21" }, { "layer": "fema_nfhl", "license": "US Government work (17 U.S.C. 105); FEMA.gov reuse statement", "as_of": "2026-10-21" }, { "layer": "nces_edge", "license": "US Government work, public domain (IES permission-to-replicate statement)", "as_of": "2026-10-21" }, { "layer": "usgs_epqs", "license": "US Government work, U.S. Public Domain", "as_of": "2026-10-21" } ], "entities": [ "Altadena", "Los Angeles County", "California", "Charles S. Farnsworth Park", "Charles White Park", "Loma Alta Park", "Mount Lowe Park", "Altadena Public Library", "Altadena Elementary", "Charles W. Eliot Middle", "Mary W. Jackson STEAM Multilingual Magnet Elementary", "OCS - South", "Webster Elementary" ], "content_hash": "095cb9771c56a3afce5a6e4368288be5ef7d17831f8f8fa56de0d51c7ba5f024" }, "compliance": { "dre_line": "Brokerage: Trevino Properties Inc., CA DRE #01976015 | Aubree Chavarriga, CA DRE #02232602", "eho_statement": "Equal Housing Opportunity. We pledge to provide equal housing opportunity to all persons without regard to race, color, religion, sex, disability, familial status or national origin.", "ai_disclosure": "Content assisted by AI from structured data and reviewed per our editorial policy." }, "live": {} }