Help Rebuild a Home for a Handicapped Man

My mom and grandma have been building a tiny home for her handicapped brother to move closer to her and their mom. She has worked on it and put all her extra money into it for 2 1/2 years. She had everything done….all appliances, a large walk-in tile shower with a built in bench, a new tv, computer, and surround sound system, plus a mini split for heat and air, were already inside the home and then the fire happened. Anything will help. Thank you!