There are fears historic Kiandra Courthouse, Pattinsons Hut and Wolgal Hut have also been affected by fires which ripped through Kosciuszko National Park on Saturday.

Selwyn's owners, Blyton Group, hadn't been able to access the ski field as of Monday afternoon, but photos taken by NSW Parks and Wildlife Service showed the resort had been ravaged by the Dunns Road blaze.

The resort's visitor and staff accommodation, ski hire facilities and workshops were among half a dozen buildings likely to have been destroyed in the fire, according Blyton Group operations manager Andrew Dunkerley.

The condition of the resort's nine ski lifts and snow-making infrastructure has not yet been established.

"It's pretty confronting, once you see the extent of the damage in the pictures," Mr Dunkerley said.

"You prepare yourself that there's going to be some damage but once you see the pictures it sort of hits home that there's quite a bit of damage there and you've got a task ahead of you."

Mr Dunkerley said Blyton Group were committed to rebuilding the resort, which he said was critical to tourism in surrounding towns.

"To what extent we need to do that [rebuild] is a little bit unsure, but whatever that looks like we are committed to Selwyn and building the resort for the immediate communities around it," he said.

"It's a big impact for not just Selwyn but your surrounding towns, Talbingo, Adaminaby, Tumut. Those sort of towns that during the winter season, [they] rely on a lot of tourists and visitor influx and it's going to have an impact on them unfortunately."

Mr Dunkerley said five staff based at Selywn over the summer months were evacuated from the resort before Saturday's fire's hit.

Reports emerged on Monday that the Dunns Road bushfire, which was burning at advice level on Monday afternoon, has also destroyed historic buildings in the old gold mining town of Kiandra.

Kiandra Courthouse, Pattinsons Hut and Wolgal Hut were among buildings feared to have been affected by the fire. NSW Parks and Wildlife Service have been working with volunteers in recent years to restore the buildings, which have been opened for public tours.

A NSW Rural Fire Service spokesman said it was yet to assess damage caused by the bushfire, and therefore could not say whether the buildings were still standing.

Mr Dunkerley didn't know if the buildings had been destroyed, but feared the worst.

"We've heard some of the buildings were lost, which is unfortunate - there's a lot of history there," he said.

Kiandra, which sprung up during a short-lived gold rush at the end of the 1860s, is recognised as the birthplace of Australian skiing.