Tenant Checklist: Energy Retrofit in Germany

Modernization & Cost Allocation 2 min read · published September 07, 2025
Many tenants in Germany face the question of how to respond to planned energy retrofits, especially when the building is listed. This article explains in clear language which rights and obligations tenants have, how modernization notices should be reviewed and which deadlines apply. You will find practical steps for documenting defects, drafting responses to the landlord and submitting official forms. I also describe when rent reduction may be possible, which costs the landlord may allocate and which courts are responsible. The goal is to give you as a tenant concrete tips so you can decide safely and prepared. Read on for sample templates.

What tenants should know

Energy retrofits can reduce long-term heating costs, but interventions in listed buildings are often restricted. As a tenant, you should check whether the announced measures qualify as modernizations under §§ 535–580a BGB and which notification or consultation obligations the landlord has.[1]

In many cases, local courts (Amtsgerichte) decide rental law disputes.

Rights during modernization

Tenants are entitled to timely notice of modernization, access to planned measures and information about expected rent increases. For listed buildings, additional approvals from the heritage authority apply; work may only proceed with their conditions. If work reduces habitability, rent reductions may be possible.[1]

Document restrictions and defects immediately with date and photos.

Forms and deadlines

  • Check the modernization notice within 2 weeks (deadline) and note all dates.
  • Request a detailed work description and cost breakdown from the landlord as a form (form).
  • Document defects with photos and dates for evidentiary purposes (evidence).
Keep all letters and photos for at least two years.

Practical steps for tenants

  1. Contact the landlord in writing and request missing documents; keep a copy.
  2. Submit an informal written reply stating objections, questions and deadlines.
  3. Create a defect log with date, time and photos; send a copy to the landlord (evidence).
  4. Check whether the measure has heritage authority conditions and request proof.
  5. If necessary, prepare a lawsuit or objection; local courts handle initial rental disputes (court).[2]
  6. Use official forms and sample letters before missing any deadlines.
Respond in writing and on time to avoid losing rights.

FAQ

Can my landlord pass retrofit costs on to me?
Under certain conditions, landlords can allocate modernization costs proportionally to tenants. The legal basis is in §§ 555b ff. BGB; exact assessment depends on the individual case.[1]
When can I reduce my rent?
If habitability is substantially impaired (for example lack of heating or severe construction noise), a rent reduction may be possible. The amount and start of the reduction depend on the individual circumstances.
Which court is responsible for disputes about retrofit?
Initially the local courts (Amtsgerichte) are responsible for rental disputes; for appeals, regional courts or the Federal Court of Justice (BGH) may decide.[3]

How-To

  1. Read the modernization notice carefully and check deadlines (deadline).
  2. Request detailed documents and cost breakdowns in writing (form).
  3. Document impairments and defects for possible rent reductions (evidence).
  4. Seek legal advice or prepare a lawsuit if the landlord does not respond (court).[2]

Help and Support


  1. [1] §§ 535–580a BGB — Bürgerliches Gesetzbuch
  2. [2] ZPO — Zivilprozessordnung
  3. [3] Bundesgerichtshof — Decisions in rental law
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.