The former owner of historic Clandon Park House in Surrey says the plans for a £30m restoration of the site is a waste of money.
This month, the National Trust has commissioned 6 designs for rebuilding the home.
But, the Earl of Onslow, whose family lived there, says nothing can replace the original.
- Take part in our Twitter poll: Do you think the stately home should be left in its current damaged condition - or be re-built? Vote here. The results will feature in tonight's programme.
Sam Holder has this report from Clandon Park House near Guildford in Surrey.