Tenant Tips Germany: Energy Retrofit & Templates

Modernization & Cost Allocation 2 min read · published September 07, 2025

As a tenant in Germany, you may face many questions during energy retrofits in older buildings: What rights do you have, what obligations does the landlord have, and how do modernization costs affect the rent? This guide explains in practical terms how tenants can observe deadlines, use template letters correctly and document communication with the landlord. I show concrete tools, legally relevant forms and steps so you can react in time, recognize unjustified cost allocations and, if necessary, understand court procedures. The goal is to enable you to act so that technical measures, tenancy law and your living situation are fairly aligned.

What applies to energy retrofits?

For modernizations certain rules of tenancy law apply; landlords must announce works and may only pass on parts of the costs. See the German Civil Code (BGB) §§ 535–580a.[1]

In most cases, landlords have information duties related to modernization.

Rights and duties of the landlord

The landlord must announce modernization plans in good time, justify the measures and state deadlines. Tenants can ask questions, request inspection and, if necessary, consider rent reduction.

Keep all letters and photos as evidence.

Concrete steps for tenants

  • Note deadlines and respond within the stated timeframes.
  • Use template letters to document objections formally.
  • Take photos and create defect protocols to secure evidence.
  • Contact the landlord in writing and keep a record of conversations.
  • Check whether cost allocation is permissible and request calculations.
Clear documentation reduces the risk of later disputes.

FAQ

Can the landlord raise the rent due to an energy retrofit?
Yes, under the conditions of the modernization cost allocation; exact rules can be found in the BGB and the Heating Cost Ordinance.[1]
Who decides disputes about deadlines or rent reduction?
Disputes can be brought before the local court (Amtsgericht); higher instances are the regional court (Landgericht) and the Federal Court of Justice (BGH).[2]
What role does the Heating Cost Ordinance play?
The Heating Cost Ordinance regulates the distribution and billing of heating costs after modernizations.[3]

How-To

  1. Check the landlord's announcement and note the deadlines.
  2. Draft a template letter with date, defect description and requested response.
  3. Collect evidence: photos, witnesses, invoices and communication logs.
  4. If no agreement is possible, prepare a complaint or lawsuit for the local court.

Important notes on deadlines and forms

Important forms and templates include, for example: termination letters (templates), objection letters against modernization announcements and claim forms for the local court. Use official sources for templates and check deadline calculations according to the BGB.[1]

Help and Support


  1. [1] German Civil Code (BGB) §§ 535–580a
  2. [2] Code of Civil Procedure (ZPO)
  3. [3] Heating Cost Ordinance (HeizKV)
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.