TOOWOOMBA'S domestic violence service has been left "humbled" after a Lockyer Valley man donated his estate to the organisation to continue the support of victims.

The family of Gatton's Craig Allwood, who died in 2016, donated $200,000 from his estate to the Domestic Violence Action Centre, in line with his request before he died.

Mr Allwood, who had an intellectual disability but earned enough money to buy a house, died from complications with melanoma at 49.

DVAC CEO Gabrielle Borggaard said the funding would go towards funding building or buying a permanent home for the support service.

"He worked in a disability program in Gatton and he saved up money for his own house, which is an achievement," she said.

"His father and step-mother told me he had heard stories about how it had traumatised women and felt that he wanted to do something about that and provide a safe space for women and children.

"We've received donations, but nothing like this before."

DVAC dedicated a room in its Toowoomba CBD centre to Mr Allwood, with a plaque acknowledging his kindness.

Ms Borggaard said it was an example of the generosity of communities in Toowoomba, Gatton and Ipswich, where DVAC started.

"It is very humbling and so lovely to know that people feel so strongly about the cause," she said.

"Toowoomba and Gatton are enormously generous communities, and we get a lot of food parcels and physical donations and some monetary donations.

"We started out by dedicating the room, because I felt it was important to acknowledge him."

Mr Allwood's father Ray said his son was a kind man who was always willing to donate his time.

"He would help anybody," he said.