The Greens are calling for $1 billion to be spent making buildings and public spaces more accessible to disabled people, concerned too many are being segregated from mainstream life by physical barriers.

It is part of a broader policy being launched by the minor party, aimed at improving the integration of disabled people in education, employment and housing.

There is also a link to the ABC radio episode where Cathy Van Extel talk to Senator Jordan Steele about the policy.