According to Googler “Jade W:” “Good news — starting today, if you’re verifying a page for your business, you may be instantly verified on Google My Business if you’ve already verified your business’s website with Google Webmaster Tools. The verification will happen automatically, if applicable, when you attempt to verify a page for your business.
If you’d like to try instant verification, please make sure you’re signed in to Google My Business with the same account you used to verify your site with Webmaster Tools
Not all businesses with websites verified using Google Webmaster Tools will have instant verification, since not all business categories are eligible. If that’s the case, please use one of our other methods of verification (https://support.google.com/business/answer/2911778).”
This is a a remarkable improvement in Google’s continued integration of all products, including Local Listings, with the Google Plus platform as well as Webmaster tools. It seems like ancient history when Google Local/Places was the wild west.