Hello carriesp, welcome to WAB.
You are soooo lucky to have them there. Have you considered staying there to be with them
In your situation I would carefully (very carefully
) find out how potential purchasers feel about wildlife in their garden and depending on how far along the buying trail you go, I would then tell them.
I think you could possibly have problems after sale if you dont tell them.
Best of luck.
Oh! Badgers love peanut butter sandwiches if you decide to feed them
jaki