BAFA funding for new windows in Langenhagen – up to 20%
From multi-storey housing to the Wiesenau renovation area: we secure your BAFA funding for the window replacement – subject to funding approval.
BAFA window funding in Langenhagen – the key figures
- up to 20%
- subsidy via BAFA BEG (15% base + 5% with iSFP)
- €60,000
- max. eligible costs per dwelling/year with iSFP (otherwise €30,000)
- €12,000
- possible subsidy per dwelling/year (with iSFP)
- Uw ≤ 0.95
- required U-value of the new windows
5 steps to window funding
- 1
Involve an energy efficiency expert (EEE)
BEG funding requires a registered energy efficiency expert (EEE). We coordinate the right EEE for your project.
- 2
File the application BEFORE awarding the contract
The BAFA application must be filed before you award the contract – otherwise funding is lost. Together with the EEE we ensure the correct order.
- 3
Choose eligible windows (Uw ≤ 0.95)
Only windows with a U-value of at most 0.95 W/(m²K) are eligible. We advise on suitable PVC, aluminium or wood-aluminium models.
- 4
Professional RAL-compliant installation
Professional installation also counts as an eligible cost. We fit to RAL standard – all from one source, including disposal of the old windows.
- 5
Submit proof & receive payment
After completion you submit the proof; BAFA pays out the subsidy. We provide all the documents needed for the installation.
Why replacing your windows in Langenhagen pays off now
In the airport city of Langenhagen, many residential buildings from the 1960s and 70s meet modern new-build areas such as Kaltenweide. The need for modernisation is particularly high in the official Wiesenau renovation area – old windows with a poor U-value (Uw) are a typical weak point here and at the same time an ideal reason to apply for funding. Through BAFA BEG EM (the German Federal Funding for Efficient Buildings – individual measures), the replacement with windows of a U-value (Uw) ≤ 0.95 is subsidised at 15%, and with an individual renovation roadmap (iSFP) at up to 20% (with iSFP). We coordinate the mandatory energy efficiency expert (EEE) and make sure the application is in place before the contract is awarded. Installation is carried out professionally to RAL standard, so that the improved sound and thermal insulation takes full effect, especially close to the airport. The amount of the grant remains subject to funding approval.
To the windows page for LangenhagenWhen is funding granted?
- Existing building (building permit at least 5 years ago)
- New windows with Uw ≤ 0.95 W/(m²K)
- Application before contract + involved energy efficiency expert (EEE)
- Professional installation by a specialist company
Frequently asked questions about funding
In Wiesenau too, window funding runs through the nationwide BAFA BEG EM: 15% of eligible costs, with an individual renovation roadmap (iSFP) up to 20% (with iSFP), eligible costs up to €30,000 per residential unit per year, with iSFP up to €60,000 (maximum subsidy €4,500 / with iSFP up to €12,000). We check free of charge whether additional municipal or urban development funds may apply to your property in Langenhagen – the amount is subject to the respective funding approval.
No. The application must be submitted before the contract is awarded, otherwise the entitlement is lost. In Langenhagen we consistently keep the correct order: advice, application via the energy efficiency expert, then contract and installation to RAL standard.
Yes, an energy efficiency expert (EEE) is mandatory for BEG funding, coordinated by VL, and we support the iSFP, which raises the rate to up to 20% – from the funding check through measuring to RAL-standard installation. We do not provide legal or tax advice in doing so; VL does not provide legal or tax advice. Funding approval is granted by BAFA.
Window funding in Langenhagen – let's plan it together
Whether a home in Wiesenau or a new build in Kaltenweide: we check your funding eligibility free of charge, coordinate the energy efficiency expert and submit the application before the contract is awarded. Professional installation to RAL standard – subject to funding approval.
All funding figures (as of 2026) are non-binding and subject to the current BAFA/KfW guidelines and funding approval. VL-Innovativbau does not provide legal or tax advice; eligibility is checked case by case by the energy efficiency expert.