Personal Experience: There is little info on the Champagne Ranch House so far, but my lovely detective/adventure buddy has done a great job digging up a little backstory. It looks like it may have been owned by a prominent breeder of quarter horses and "was one of the nation's leading breeders" who was "one of the most respected names in the industry".
I am not sure what fire destroyed these homes and whether it was a wildfire or house fire at this point. It appears to have been abandoned for quite some time though. There are multiple houses to explore. The whole area is rather unsafe though so proceed with caution and at your own risk.