"We needed more space to put up some of these great works," Goss said.
Since the foundation's creation in 2007, the collection has grown to roughly 500 pieces. It includes works by some of the biggest names in the art world today, such as Damien Hirst, Tracey Emin and Michael Craig-Martin.
Goss gives much of the credit for the foundation's success to Michael.
"He has supported me a hundred percent, financially, emotionally," he said. "Who else would have told a working-class kid that he could start an art foundation?"
Goss also talked about Michael's recent jail sentence for driving under the influence of drugs in London.
"I think when you love someone, whether it's a friend or a partner, you support them through good times, bad times," he said.
Michael is now out of jail.
"He's doing good," Goss said. "He's making great music. He's writing great music from all this."
The new location of the Goss-Michael Foundation opens to the public on Friday.