The Department of Housing has given a grieving grandmother an additional three months to vacate the property where she lives and cared for her son until he died of cancer last month.

The ABC last night revealed the plight of Sue Sinclair, who lost both her son and husband to illnesses linked to a government 245T weed spraying program.

Ms Sinclair had until September 6th to vacate the Subiaco apartment because the tenancy agreement was with her dead son.

But today the Department's Steve Parry agreed to extend the deadline by three months.

"Right here and now I can say she can have three months, there's no problems whatsoever on that and in that period of time we need to have that conversation on what else we can do," he said/

Yesterday the State Opposition described the decision to kick Mrs Sinclair out as 'callous'.

Opposition Housing spokesman Fran Logan says Ms Sinclair should be allowed to stay.

"I think this is a shocking case, a case where the department is simply not showing sympathy to a family that has suffered so much already," Mr Logan said.

Steve Parry is not surprised people might see it that way.

"I can understand how heartless and callous we may seem," he said

"However we have to talk to people in difficult circumstances and I understand the grieving process and we try and leave as much time as we possibly can to have the conversation."