Clandon Park House fire: Stately home gutted in huge blaze
The fire at Clandon Park House near Guildford started at about 16:00 BST on Wednesday and was still burning at 21:00.
At its height more than 80 firefighters were on the scene, the property's owner, the National Trust said.
Jerry Silverton from the trust said: "We have lost some of the roof which has caved in."
BBC Surrey's James Cannon was at the scene.