The tax court did not deduct a value for the new shower. According to new BFH case law, in the case of disability-related modifications, the expenses are so strongly justified by the compulsion of the disability "that the acquisition of any value in view of the overall circumstances takes a back seat" (BFH ruling of 24.2.2011, BStBl. 2011 II p. 1012).
Furthermore, a marketable advantage is also disregarded: "A value that is based solely on the possible use of the modifications by non-disabled family members is not a real value and is therefore unsuitable to justify a prohibition on deduction" (BFH ruling of 22.10.2009, BStBl. 2010 II p. 280).