Found this on the Austin Tenants Council website- some great information on disability income and renting.

Priced Out in 2010 is a study of the severe housing affordability problems of people with disabilities. The study compares the federal Supplemental Security Income (SSI) payments of people with significant and long-term disabilities to U.S. Department of Housing and Urban Development (HUD) Fair Market Rents for modestly priced rental units.