
My Safe Home offer a service to help people with disabilities buy their own home through shared ownership or a financial advisor who specialises in advice and support about home ownership. See their easy read guide to home ownership.
Advance Housing offer support to buy via the HOLD scheme.
Please note that these are only examples and there may be other organisations who can support you.

If someone with a learning disability or an autistic person has been in a specialist mental health hospital or needs extra help so they can stay in the community, there could be an NHS England or Homes England grant to help them get a home.
You need to talk to the commissioner who is working with you or your family to find out if this is possible.