The tax court did not deduct any value for the new shower. According to the 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 is of secondary importance in view of the overall circumstances" (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).