New Danville just outside of Houston TX used project-based 811: https://www.newdanville.org/residential/
Columbus Hub of Opportunity in Utah used them and tax credits: http://www.columbusserves.org/hub-of-opportunity/
It is really important to understand the red tape that goes along with these and other funding streams. For example, 811 funding comes with a 25% density restriction for people with disabilities. Most of the info can be found in the Resource Directory using the filter ‘financing.’ I could save you time, give you the nutshell version and answer some of your questions if you schedule a consultation: http://www.autismhousingnetwork.org/schedule-30-minute-consultation/