If you're building websites for other people and want to add their site to Google. Use this link - it's free and easy: https://www.google.com/webmasters/tools/submit-url/.
But, you don't even need to submit a site to Google. Google is a fully automated search engine that uses software known as "spiders" to crawl the web on a regular basis and find sites to add to their index. In fact, the vast majority of sites listed in their results aren't manually submitted for inclusion, but found and added automatically when their spiders crawl the web.
