Production halls and storage — per 1,000 m²
Added to a factory or warehouse package with its base fee; not sold on its own. For each 1,000 m² of production halls and storage, for building services only; quantity = area ÷ 1,000, rounded up.
The engineer checks the areas and numbers at the first visit: any excess is charged and any shortfall refunded. Repairs and parts are not included; you get their price before any work.