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Applying for a loan for the energy-efficient refurbishment of residential buildings to become a KfW Efficiency House


The Federal Ministry for Economic Affairs and Energy (BMWi) promotes measures to increase energy efficiency.

Funding is available for the energy-efficient refurbishment of residential buildings for which the building contract or the building notification was submitted before 01.02.2002.

You can receive a loan of up to EUR 120,000 per residential unit for the following measures:

  • energetic refurbishment of residential buildings.

You will not receive any subsidies:

  • for holiday homes and apartments,
  • for rescheduling existing loans,
  • for follow-up financing of projects that have already been started or completed,
  • for photovoltaic installations.

There is a benchmark for energy-efficient buildings, the KfW Efficiency House Standard. The lower the number, the more efficient your house is and the less energy you need. The following standards are subsidised:

  • KfW Efficiency House 55
    • Repayment subsidy of a maximum of EUR 48,000 of the loan amount.
  • KfW Efficiency House 70
    • Repayment subsidy of a maximum of EUR 48,000 of the loan amount
  • KfW Efficiency House 85
    • Repayment subsidy of a maximum of EUR 36,000 of the loan amount
  • KfW Efficiency House 100
    • Repayment subsidy of a maximum of EUR 33,000 of the loan amount
  • KfW Efficiency House 115
    • Repayment subsidy of a maximum of EUR 30,000 of the loan amount

You must keep all documents relating to the eligible costs.

Applications for subsidies are processed by the Kreditanstalt für Wiederaufbau (KfW).

You have no claim to the granting of the subsidy.

Applications may be submitted by:

  • anyone renovating a residential property
  • first-time buyers of refurbished residential property
  • Contracting providers who plan, build and operate energy-efficient refurbishment measures on behalf of others.

Eligible to apply are

  • all sponsors of investment measures in owner-occupied or rented residential buildings and owner-occupied apartments
  • Buyers of newly refurbished residential buildings or condominiums

Other requirements:

  • The application must be submitted before the start of construction work.
  • Your measure must meet the minimum technical requirements for a KfW Efficiency House.
  • You must involve an expert for energy efficiency from the federal government's list of experts
  • The building application or the building notification for the residential building in question must have been submitted before 01.02.2002.

When applying, you must submit to your funding partner:

  • Confirmation of application
  • If applicable, confirmation from the municipality on the classification of the building as other building fabric particularly worthy of preservation.

When you have completed your measure, you must submit the following documents:

  • Confirmation after completion

and for loans over EUR 25,000 you must submit the following documents:

  • Supplement to "Confirmation after implementation".

You will receive the confirmations from your energy efficiency expert.

Not applicable

  • Application: before the start of the measure
  • Call period of the loan: within 12 months after loan approval, an extension to a maximum of 36 months is possible.
  • Commitment fee: You do not pay a commitment fee for the first 12 months after approval.
  • Proof of use of funds: within 15 months after full disbursement of the loan

3 to 5 days

You can start implementing the measure immediately after you have been approved for your funding.

  • Forms: yes
  • Online procedure possible: no
  • Written form required: yes
  • Personal appearance required: no (depends on the procedure of the financing partner)

You will receive the original forms from your funding partner. You fill out the forms together.

You must submit the application for funding together with your financing partner in writing to the Kreditanstalt für Wiederaufbau (KfW).

  • You can find an energy efficiency expert in your area on the website of the German Energy Agency (dena).
  • You discuss the planning and monitoring of your renovation measure with the expert. This expert checks the eligibility of your measure and prepares the confirmation of application (BzA). The expert will send you the identification number (ID) of the BZA (BzA-ID), which you need for your application.
  • Talk to your financing partner (a bank, building society or financial intermediary with whom you would like to conclude your construction financing) about including a subsidised loan. They will advise you on which additional documents are required and will submit the application to KfW on your behalf.
  • KfW will review your application and inform you or your financing partner whether your loan with repayment subsidy will be approved.
  • If KfW approves your application, you conclude a loan agreement with your financing partner.
  • As soon as you have received approval for your subsidy, you can start construction work or buy the renovated property.
  • Depending on the progress of construction, your financing partner will pay you the loan in one sum or in instalments.
  • When you have completed the measure, you must provide proof to your financing partner,
    • that you have spent the money from the loan on the planned measure and
    • that your measure meets the standard of a KfW Efficiency House.
  • Your financing partner checks and confirms your evidence and forwards it to KfW.
  • If KfW has also checked the evidence, you will receive the repayment subsidy as a credit to your loan account. This reduces the term of your loan.

Federal Ministry for Economic Affairs and Energy (BMWi)

The text was automatically translated based on the German content.

Kreditanstalt für Wiederaufbau (KfW)
Palmengartenstraße 5-9
60325 Frankfurt am Main
+49 800 5399-001
+49 69 74319-500
  • Monday to Friday: 8:00 a.m. to 6:00 p.m.
  • For advice on financing and application:
    Schedule a consultation with a financing partner of your choice.