Google has posted that it may begin to start automatically adding location extensions to some of your Google Ads. Google wrote this in a Google help document saying “if you have not added locations to your account, Google Ads may automatically match your business to known locations.”
Google wrote and highlighted it in red:
Here is a link to the section of this change on this page and a screenshot:
PPC Greg, spotted this a bit ago and wrote on Twitter “Google to start auto-adding location extensions based on account properties.”
This is something you should be aware of and on the look out for.
Forum discussion at Twitter.