It's tough. If it is an existing bathroom, then you've got space problems. The building code requires a three foot diameter circle in the bathroom. The reason for this is for mobility for the wheelchair. You want the wheelchair to be able to turn around fully in all directions. So, you need this diameter around the toilet, sink basin, and bathtub. It is a good idea to have a wall hung sink basin so that the handicapped person can roll under it far enough to comfortably reach the faucet. The faucets should have lever handles. These handles are easily operated, and they don't have to be gripped too tightly to rotate. They are much easier to operate. There are specific toilets that are a little bit higher, and they are more suitable for handicapped use. You need to put up the grab bars on the wall for the handicapped person. This way they can help themselves in and out of the chair. Of course, you have to widen the door. So, it's usually not an easy thing to convert an existing bathroom into a handicapped assessable bathroom. You have to make the room bigger. You have to increase the space. Most of the time, you are going to have to borrow space from a closet or something. It is definitely not a do-it-yourself project.
