You will always keep ownership of your domain name. When you start your website, you have two choices
1) Register your domain name yourself and let us know it to tell you where you need to point your name servers.
2) You can let us register it for you in your name and manage all of the technical nitty-gritty. Transferring your domain is possible if you choose, we’ll be happy to help you transfer it to whatever domain registrar you wish