On its age, its old homes and the National Register, Ladera Ranch is more historic than 2% of U.S. towns, #833 of 847 in California. Its National Register listings hold the grade up; its age pulls it down.
D−
HistoryA character grade: shown, never part of Ladera Ranch’s overall grade.
Few California towns list much on the Register (a typical California town has 0.0 per 10,000 residents, the U.S. 2.4), so Ladera Ranch’s 0.0 sits below most of its state (31% of California towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1999.
How sure. Graded on any two of the three inputs instead, the letter would range from D− to D. The pre-1940 share (±0.5 points) is firm at this size.
Founding year: Wikidata (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Ladera Ranch’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Ladera Ranch is a 4,000-acre (16 km2) planned community, bordered by the cities of Mission Viejo and San Juan Capistrano to the west and the city of Rancho Santa Margarita to the north. Located along Antonio Parkway and Crown Valley Parkway, construction of the community began in 1999 on portions of the O'Neill, Avery, & Moiso families' 23,000-acre (93 km2) Rancho Mission Viejo cattle ranch, which was the largest remaining working ranch in Orange County.
Ladera Ranch is more historic than 2% of U.S. towns, #833 of 847 in California. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in Ladera Ranch?
0.5% of Ladera Ranch’s homes were built before 1940 (Census estimate), against a typical 3.4% for a California town; the median home was built in 2005.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (3), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
2014
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2005
