It appears that Google is rolling out new call-to-action buttons for service level businesses in the local knowledge panel. The businesses that have opted into messaging in Google My Business will find that button show up for branded queries.
So how does it work? All you need to do is search for a business’s name, and on both desktop and mobile, you’ll get a call to action its local knowledge panel to get a quote. On desktop, the button is in blue, while the mobile version is white. The first person to notice this was Joy Hawkin’s business sterling sky inc.
Here are a couple of images on how it looks:
According to Hawkins, you have to have messaging turned on in your Google My Business account.
Here are instructions from Google on how to turn on that feature.