National Kitchen and Bath Assoc http://www.nkba.org/
I would also recommend putting a call in to your local ADA Center (800/949-4232) and consulting with your state's assistive technology center (http://www.resnaprojects.org/nattap/at/statecontacts.html) about products and possible financial assistance.
We used pocket doors and indoor/outdoor carpet. Bathroom should have a walk-in shower and large enough to accommodate wheelchair if needed. Also lever handles for faucets and other doors. Make sure toilet is higher than standard.
There are many resources available to help you with your home design:
http://www.homemods.org has a ton of resources.
Check their library.
Center for Universal Design: http://www.design.ncsu.edu/cud
National Kitchen and Bath Assoc http://www.nkba.org/
I would also recommend putting a call in to your local ADA Center (800/949-4232) and consulting with your state's assistive technology center (http://www.resnaprojects.org/nattap/at/statecontacts.html) about products and possible financial assistance.
Hope that helps!
---Jess