The person whom you wish to be the future owner of your community should be a member of your community.
To transfer community ownership to someone else in the community, simply follow these steps:
- Go to the community’s homepage.
- Click view members under the “members” box on the right side of the page.
- Find the person you wish to transfer ownership to, and click the pencil icon (“manage”) beside their name.
- Select transfer community to user and click yes.
This automatically sends a notification to that person. If the person accepts the transfer, the ownership of the community will be passed on.[source]