I applied November 2005 for a Disability Adaptation Grant towards an extension to our house for a room for my daughter - who has Aspergers - we were assessed by OT and it was decided that she was a level 2 priority and we were given a grant for it of almost �19,000.
She finally moved into her new bedroom in October 2006(last year) and it has a made a major difference to both her and the rest of the family.
Perth Care and Repair helped us with the Grant application.
Try which ever of the following is for your area.
http://www.careandrepair-england.org.uk (England)
http://www.careandrepairscotland.co.uk/ (Scotland)
http://www.careandrepair.org.uk/ (Wales)
Louise