Forum Moderators: martinibuster
Just remove the domain from your list of "allowed sites" in setup, done.
I doubt if anything about AdSense is that simple today.
Do I need to contact adsense to let them know I no longer own the site?
Probably a good idea, especially if you know the buyer will be putting AdSense on the account. Better to be safe than sorry.
If this is the site you used to get approved for AdSense in the beginning you may need to be reapproved with some other site if you want to continue using AdSense.