Choose Allocation Key: Tenant Rights in Germany

Utilities & Service Charge Billing 2 min read · published September 07, 2025

What is an allocation key?

The allocation key determines how landlords distribute operating costs to tenants. Not every key is permitted; the underlying types of costs follow the Operating Costs Regulation[2] and where relevant the Heating Costs Regulation[3].

  • Incorrect totals or wrongly assigned cost items.
  • Unclear or missing receipts in the statement.
  • Deadlines for raising objections were missed or not stated.
  • The statement does not match the lease or agreed allocation key.
First check the billing documents and the contract clauses.

How and when to object?

As a tenant you have the right to check an operating cost statement and to object to errors. Specify the positions and requested corrections in writing; refer where appropriate to the relevant sections of the Civil Code[1]. Send a written objection within the deadline and request inspection of receipts.

Keep all postal receipts and copies safe.

Separate rules apply for repairs, rent reductions or termination; refer to your rights early to avoid disadvantages.

FAQ

Can I challenge the allocation key?
Yes. If the key is unlawful or not contractually agreed, you can object in writing and demand correction.
What deadlines apply?
You should usually raise objections immediately after receipt; specific deadlines may be in the lease or set by law.[1]
What if the landlord does not respond?
Gather evidence, send a reminder letter and, if necessary, consider legal action at the competent local court.

How-To

  1. Check the statement: compare items with the lease and the receipts.
  2. Set a deadline in the letter: request correction within 14 to 30 days.
  3. Use a template letter: name errors specifically and request receipts.
  4. Document replies and payments as evidence.
  5. If necessary, file a lawsuit at the competent local court.[4]

Help and Support


  1. [1] Civil Code (Bürgerliches Gesetzbuch, BGB) — gesetze-im-internet.de
  2. [2] Operating Costs Regulation (BetrKV) — gesetze-im-internet.de
  3. [3] Heating Costs Ordinance (HeizKV) — gesetze-im-internet.de
  4. [4] Code of Civil Procedure (ZPO) — gesetze-im-internet.de
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Germany

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.