Check Modernisation Notices: Tenant Rights Germany

Modernization & Cost Allocation 3 min read · published September 07, 2025

Many tenants in Germany receive modernization notices and are unsure how to respond on time. This guide explains clearly what tenant rights exist, when cost allocation is permitted and which deadlines apply. You will learn which forms or letters (for example objection or protest) are useful, how to document defects and hardship cases, and which courts are responsible. Practical sample formulations, guidance on authorities and a step-by-step guide help you to act correctly. The goal is to empower tenants, avoid unnecessary costs and open legal remedies — without legal jargon, but with clear references to applicable laws and official sources.

What is a modernization notice?

A modernization notice informs about planned measures to improve the apartment energetically or structurally and that the landlord intends to pass part of the costs on to tenants. The legal basis can be found in the BGB, particularly regarding tenant obligations and cost allocations.[1]

Modernizations can lead to a rent increase if certain conditions are met.

Deadlines and how tenants should respond

After receipt, tenants should immediately check the notice: date, scope of work, start and expected duration, and the announced cost distribution. Respond in writing and on time if information is missing or unclear.

  • Check deadlines: Note the date of the notice and the stated deadlines; act within the given time.
  • Respond in writing: Send a formal inquiry or objection if costs or scope are unclear.
  • Document: Photograph defects before and during the work and keep a damage log.
Always respond to modernization notices in writing and include the date.

Cost allocation: check calculations

Landlords may, in many cases, allocate part of modernization costs to the annual rent. Check the calculation, the shares and whether depreciation is correctly considered. Relevant provisions are in the BGB, and key rulings by the Federal Court of Justice clarify doubtful cases.[1][2]

  • Check cost breakdown: Request a detailed cost breakdown and compare items.
  • Check hardship: Explain if the increase would be unreasonable for you.
  • Challenge formal errors: If deadlines or formal requirements were not met, the allocation may be prevented.
Act quickly on formal errors in the notice, otherwise you may lose the right to object.

Evidence, forms and templates

There are no uniform nationwide standard forms for every situation, but for court actions the rules of the ZPO apply; claims are usually filed at the competent local court.[3] Practically useful items include:

  • Objection letters or protests (in writing, with date and detailed justification).
  • Defect notice: photos, dates, witnesses and precise descriptions.
  • Filing a claim at the local court: if necessary, file a claim under the ZPO; ask the competent local court about the procedure.
Good documentation increases your chances in negotiations and in court.

When is a court responsible?

For disputes about cost allocation, wrongful termination or defects, the local court is usually responsible in the first instance; appeals go to the regional court and final clarifications may be by the Federal Court of Justice.[2]

FAQ

Can I completely prevent a modernization notice?
Not always; modernization is generally possible, but formal errors, missing deadlines or hardship cases can prevent implementation or limit the allocation.
How quickly must I respond?
You should respond in writing within the deadline given by the landlord; if in doubt, respond immediately after receipt.
Do I have to pay the announced costs immediately?
No. An announced increase is usually implemented with the next or following rent statement; check each statement and raise objections if necessary.

How-To

  1. Read and note deadlines: Check the date, duration and start of the works.
  2. Check costs: Request a detailed breakdown of the calculated costs.
  3. Respond in writing: Send an objection or inquiry with date and signature.
  4. Document: Take photos, note disruptions and collect evidence.
  5. Legal support or court: Contact advisory services or, if necessary, file a claim at the local court.

Help and Support / Resources


  1. [1] Bürgerliches Gesetzbuch (BGB) – gesetze-im-internet.de
  2. [2] Bundesgerichtshof (BGH) – bundesgerichtshof.de
  3. [3] Zivilprozessordnung (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.