This is a Google Apps Script that can change the owner permissions of all folders and files in a particular folder in Google Drive.

1. Open https://script.google.com/home in browser
2. Select New script
3. Set project name and save
4. Copy main.js and paste Google Apps Script editor
5. Select File > Project properties > Script properties > + Add row
   • FOLDER_ID: Google Drive folder ID
   • NEW_OWNER: New Owner Email Address
6. Select function > main
7. Select Run button
8. DONE