Have you checked the share permissions assigned to the Home folder? When you have share and NTFS permissions assigned to a folder or file, most restrictive wins. Possibly the share level permissons are restricting access? Best practice is open the share level permissions to full access and use NTFS permissions to lock the folder and/or file.
Ownership shouldn’t be a factor in this case, but as an Admin, you have the ability to claim ownership away from the other user if you desired then re-apply permissions.