Question juridique clé
Whether the renovation and conversion expenses for the Olten property were deductible maintenance costs or non-deductible value-increasing expenses.
Solution extraite
The entire disputed expenditure was value-increasing and therefore not deductible as maintenance costs.
Motifs extraits
The court found the building had undergone a comprehensive, multi-year total renovation with extensive structural and interior changes, new layout elements, and new ancillary construction. Even a modernization can be value-increasing when it amounts to a true new installation rather than preservation of existing value.