You are able to transfer the workspace ownership to another account on all plan types.
To transfer the workspace ownership, please follow these steps:
Visit your Workspaces & Collaborators page.
Locate and select the workspace you want to transfer to another account.
Ensure that the user that you want to transfer the workspace ownership to has already been added to this workspace as a collaborator.
Click three dot menu for this user.
Click Manage role.
Assign "Owner" role.
Click Save.
Once the new account has been assigned the "Owner" role, the previous owner's role will be automatically updated to "Admin" or "Member" role.
If you would like to leave this workspace after doing the ownership transfer, please go to three dot menu in the top right corner of the same workspace and click Leave workspace.