Mary Dawn, first problem, can you get a building permit to build in the garage in your area? I don't know where you live, but many places will make you tear out the whole job, if it does not meat specs for a permit. You have a possibly big job, if you are putting in a bathroom, it is more work. If you can adapt an existing bathroom with a direct entrance to the room it would be better. You probably need to seal the garage door, or remove it and build a wall, maybe with an entrance to the outside? You may have to remove existing items from the garage? Maybe it would be easier to buy or rent a small mobile home and place it near the house? Then you could get an intercom to keep tabs on the patient. I am no expert on this, I do a lot of home projects though, so if you tell me more I may be able to help. [log in to unmask]