Online real estate valuation tools use algorithms to search an area based on city, zip code, etc... Lacking good data, they will reach outside optimal boundaries to fill the search query with anything, especially when there isn't much recent sale activity. It appears you're in the small equestrian community of Rancho Capistrano.
These online tools may someday exceed good old fashioned human know-how, but that day is not here (yet)! If you need a no obligation, free home valuation feel free to call me (951) 317 8830. My office is located in Lake Elsinore and I have experience with homes in your community.