Ad extensions on Google ads or previously called Google Adwords are additional information added to your add to make it more informative. Adding ad extensions usually to google ads will increase Click Through Rates since you’re using more space on the results. You can add reviews, site links, pricing, address, phone number, click to call, downloads.

Ad extensions are only shown when your ad position and Ad Rank is high enough, meaning only ads on spot #1, #2, #3, #4, #5, basically ads on the first page.

There is no guarantee that your ad extension will show, google will determine showing extensions it if it thinks that your ad will perform better.

A high bid will probably increase your chances of your ad extensions showing. A click on ad extensions have a higher actual CPC but this is cheaper CPC than moving higher in position. Meaning it’s worth it to get more clicks from ad extensions.

On the top image I searched for “running shoes” on a desktop and got several results with ad extensions, It this was a local search of a local business many times you will get a phone number or directions to the building.

If you need more information about add extensions don’t forget to take a look into Google official description here. Again thanks for reading and hopefully this was helpful for you.