Traditional Owners are assessing the bushfire damage to the historically significant Mogumber Mission site in Western Australia.

Yued Aboriginal Corporation CEO Rewi Lyall told National Indigenous Times on Thursday that seven of the buildings on the important Stolen Generations site have been "completely destroyed", including the church.

"Bearing in mind that there were only a few left from the original scale of the site," he noted.

"Others have been damaged, to some extent. The full extent of that isn't entirely clear yet.

"The Mission also sits on a reserve that is some 2000 hectares in size, and the majority of that is farmland. From the initial reports we've seen, there are a few buildings that are farm buildings and it seems like they might be unscathed, which is an improvement on the initial reports we were getting.

"The cemetery has been burned as well. We haven't seen any images of the scale of the damage there yet, so it's pretty grim and sad for people who have that lasting connection to the mission site."

My Lyall said he is hopeful that these events "will serve as a catalyst for a united position on the future for Mogumber Mission".

"And the early indications are that everybody, community and government, is interested in trying to work towards that objective," he said.

"I don't want to set a particular timeframe for that, because there's a lot of work that needs to be done building towards that kind of future, and people have different views about what it might be used for in the future as well."

From its foundation in 1917, for many decades the Mission was home to Indigenous children forcibly removed from their families.

"We need to have a pretty comprehensive and inclusive process that will ensure that the Traditional Owners, and family and survivors throughout the state whose lives were affected by the past internment practices of the state of Western Australia, all have an opportunity to have a say on what that place should be for," Mr Lyall said.