No as I shared I only use a remote machine (which is my old laptop converted to NAS) (2nd house is a dream as of now 🙈)
On a serious note as Duplicati backups can be encrypted, you can use remote Machine, backup to a machine in 2nd house as Syncthing works over relays for remote locations as well, or you can also send encrypted backups to cloud like Gdrive, Dropbox, etc.