Ask for a line-by-line split of building charges and identify what remains with the owner. New-build common-area costs, administration and reserve contributions can be easy to overlook when attention stays on repairs inside the flat.
I’m choosing between a 45 m² warehouse and a similarly priced retail unit in Berlin. The warehouse appears easier to maintain, while the retail unit gives more control over how the space is presented but could bring larger irregular bills.
My model covers maintenance, insurance, energy use and...