Questão jurídica principal
Whether costs for photovoltaic and solar hot-water installations on a recently built house are deductible as energy-saving measures.
Decisão extraída
No. Energy-saving deductions are allowed only for measures on existing buildings; installations made shortly after completion and move-in remained non-deductible construction costs.
Fundamentação extraída
The court held that the relevant line is drawn at a five-year period: a building is still treated as new within that time. Since the installation occurred about nine months after move-in, it was made on a new building, not an existing one.