How to Avoid Common Mistakes in Operating Cost Statements
Utility bills are prone to formal and mathematical errors. Even minor mistakes can render the entire statement legally invalid, allowing tenants to successfully dispute the claims. One of the most critical aspects is the strict billing deadline: in many jurisdictions (such as Germany), the statement must reach the tenant within twelve months after the billing period ends. Missing this deadline usually forfeits any claims for additional payments.
Another common issue is including non-apportionable expenses. Only operating costs that have been explicitly agreed upon in the lease agreement can be charged to the tenant. Administrative fees, bank charges, and any maintenance or repair costs must be strictly excluded, as they are the sole responsibility of the landlord.
- Missing the Deadline: Delivering the statement later than the legally allowed period.
- Non-Apportionable Costs: Incorrectly billing administrative or repair expenses to the tenant.
- Unagreed Cost Categories: Charging for services not specified in the lease agreement.
- Inaccurate Allocation Keys: Applying incorrect calculation baselines for shared spaces.





