Promotion of refurbishment standard (BEG-linked) (FKG)
If you have submitted an application for refurbishment standards by 10 December 2025, you will find all the information you need here.
Course description
funding is available for the refurbishment of residential buildings that meet the FKG efficiency house standard (EH 55 or better or EH monument).
The following information applies to applications that are or have been submitted from 11 December 2025: Funding for refurbishment standards from 11 December 2025
For applications submitted by 10 December, you will find all relevant information here:
For applications submitted between 31 July 2025 and 10 December 2025, the following applies: funding is only available for buildings that have energy efficiency class E, F, G or H based on a needs assessment prior to refurbishment.
The subsidy rate is:
- 20 per cent of the eligible costs in accordance with the BEG if the FKG application was submitted up to and including 18 December 2024.
- 10 per cent of the eligible costs in accordance with the BEG if the FKG application was submitted from 19 December 2024 onwards.
The following efficiency house standards can be subsidised
- Refurbishment to EH 40, EH 40 EE or EH 40 NH
- Refurbishment to EH 55, EH 55 EE or EH 55 NH
- Refurbishment to EH Denkmal, EH Denkmal EE or EH Denkmal NH
Prerequisites
You have submitted an application for funding for refurbishments to the Efficiency House standard by 10 December 2025.
Required documents
No documents are required when submitting the application.
After completion of the construction project(s), the following documents must be uploaded. In the funding portal, uploading these documents is called "Submit proof of use":
If the application is to be submitted by an authorised person representing the applicant, the power of attorney form must be submitted.
- Proof of authorisation to apply. Example: A private individual submitting the application themselves must upload their ID. For WEG see subpage WEG.
- Confirmation of disbursement from KfW Bank or confirmation of the KfW repayment subsidy from your house bank
- confirmation after implementation (BnD)
- Documentation with the evidence required for the respective efficiency class in the TMA of the federal subsidy, including calculation of the GEG and BEG requirements and energy performance certificate of the building
- All invoices for the expenditure incurred in accordance with BnD
- Completed form Declaration of Efficiency House in Existing Buildings
A summary of the documents to be submitted can be found in the Efficiency House in Existing Buildings checklist.
Questions & Answers
owners and equivalent persons (e.g. leaseholders, persons entitled to usufruct) of the property, part of the property, building or part of the building on or in which the measure is to be implemented, as well as contractors, are eligible to apply .
The application is submitted by a representative of the WEG. the "applicant" is the WEG itself. The WEG bears the costs. The invoice must be issued to the WEG. You can find detailed information on the WEG subpage.
no, you do not need to present an iSFP to receive funding for "Efficiency House in Existing Buildings". Only if you wish to receive funding for individual measures (i.e. refurbishment in several stages) is the existence of an iSFP (which fulfils the FKG criteria) a prerequisite for funding.
Similar to the regulations for BEG funding, the funding principle of "application before commissioning" does not have to be adhered to for the bonus measure "Specialist energy planning and construction supervision for BEG-linked measures". This means that specialist planning services may be commissioned before the application is submitted in the FKG. This applies to proof of use that is checked from 6 September 2024. The main measure may still not be commissioned before the application is submitted.
A breach of the funding principle "application before commission" for the main measure will result in the simultaneous rejection of the bonus measure.