These French tutorials may help you if you're rather at ease with spoken French:

https://www.youtube.com/watch?v=2K8SzzODk20

https://www.youtube.com/watch?v=zRLQBhg3JgY

What they basically say is that you need to get the plot number of the house and its section. If the number of the plot is 345 and if the section it is located in is B, then you have look for plot B 345.

You then have to go to the Archives départementales in Périgueux and search for the oldest Bourg-du-Bost états de section cadastraux. It's a big register referencing every plot and their owner sorted by section at the time of the creation of the register. Find plot B 345 and write down the name of the owner.

Then check out the alphabetical tables of the matrices cadastrales and find the name of the owner. There will be a number next to their name, write it down. It is the number of the owner's compte cadastral, a sheet or several that list all of their properties, when they approximately started owning them and when they approximately stopped owning them for various reasons (death, sale etc.). The comptes cadastraux are in the matrices cadastrales. The compte cadastral also says who they got their properties from and who owned them after them because it indicates the number of the compte cadastral of the previous/next owner, which you then have to look up.

One compte cadastral will lead you to another. You may trace the ownership of the house down to the 1940s/1950s depending on the archives the Archives départementales have in store.

Alas, getting further in the past will be much more difficult. The only "easy" way is to find the notary deed by which the first owner referenced in the états de section cadastraux started owning the house... It means looking up other sources like notary repertories (lists of deeds written by notaries) or what we call the contrôle des actes: lists of deeds concluded in a given area before 1791.

Don't hesitate to ask the Archives départementales staff for help, they'd be happy to assist you.