For various reasons, it might be that you want to transfer the Ownership of your Site to someone else. Before doing this, make sure one of the People in your Site has the Site Admin role.
Then follow these steps:
1. On the Site tab, make sure ‘Overview’ is active in the left menu. Here you are displayed as the Site Owner.
2. Click ‘Transfer Ownership’
3. A window appears, explaining the action and allowing you to select one of the Site Admins. Once a Site Admin is selected, click ‘Transfer’.
4. Once the window closes, the selected Admin will be changed to the Owner. Your role will by default be Site Admin