If you are paying cash for the remodel the cost is not deductible, initially. One would need to sell the coach and then determine how how much the remodel added to the sales price. One could then deduct the cost of the remodel to offset any capital gain from the sale. I know, a capital gain from the sale of a coach is very unlikely. I just wanted to mention the possibility. If an LLC owned the coach, one could use the cost of the remodel to aid in the capital loss in addition to minimizing the capital gain.
If the coach is owned by a person, the previous posts provide suggestions on how to use the tax laws and become creative to receive some tax benefit from the remodel.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours