If tenants receive a statement of operating costs, they have a right to inspect it. Pursuant to Section 259 (1) of the German Civil Code, the tenant is entitled to inspect the receipts. The landlord is obliged to submit invoices and payment receipts to the tenant for inspection. In the case at hand (AZ VIII ZR 118/19), tenants of a rented apartment were requested to make an additional operating cost payment of 1,262...