If you find an address that is incorrect, or missing from Google maps, it is possible to submit the error to Google and the error will be corrected in the next few weeks.
Log into a google account.
Go to maps.google.com
On the top left corner, click the menu button. (Looks like 3 horizontal bars)
You will get an email confirming your submission.
In a few weeks you will get an email when the data is corrected.