Jung kauft Alt individual-measures check: what renovation is still open?
Since 3 August 2026, KfW 308 accepts a package of four individual measures — windows, façade, roof and heating — instead of a full renovation. Anything already brought up to the EnEV 2001 standard counts as done. 4 questions about your property show which areas already qualify and which are still open. Renovation loans in Germany can run alongside or instead of KfW funding, depending on the scope of the work.
What does the Jung kauft Alt individual-measures check actually test?
It tests four building elements for the individual-measures route that Jung kauft Alt accepts since 3 August 2026 instead of a full renovation: windows, façade, roof or top-floor ceiling and heating. Anything already renovated to the EnEV 2001 standard counts as done. The check gives a rough read; it does not replace a contractor's declaration or an energy consultant's confirmation.
A rough self-assessment against the four technical minimum requirements of BEG EM and the EnEV 2001 (Annex 3) grandfathering threshold. Not a binding confirmation — that only comes from a qualified contractor's declaration or an energy consultant. Not legal or tax advice.
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Your property in 4 questions
Each question checks one building element against the technical minimum for the individual-measures route — and against EnEV 2001 grandfathering: anything a previous owner already brought up to that standard doesn't need to be touched again.
EnEV 2001 grandfathering — what counts is not today's target value
The benchmark for whether any of the four individual measures is still needed at all isn't the current 2026 target, but the noticeably lower EnEV 2001 (Annex 3) requirement.
If a building element was already brought up to that older standard, it counts as done — regardless of whether it exactly hits today's target:
Which grandfathering thresholds apply to windows, roof, façade and heating?
The grandfathering threshold is 1.7 W/(m²K) for windows and 0.30 W/(m²K) for the roof or top-floor ceiling, while a heat pump, pellet boiler or district-heating connection counts as met for heating.
Windows: grandfathering threshold 1.7 W/(m²K). If the windows were replaced after 2002, this measure is usually already covered. Roof / top-floor ceiling: grandfathering threshold 0.30 W/(m²K). If it's already been insulated once, it usually doesn't need topping up.
Façade: for two-leaf brick construction, a fully filled cavity between the leaves counts as met. Heating: heat pump, pellet boiler or a district-heating connection count as met; only a plain gas or oil boiler has to go.
Which individual measure is often still left to do?
In a good case exactly one measure is left, often one that is due anyway, such as the attic floor, which §47 GEG requires every new owner to insulate within two years of the land registry entry.
In a good case, exactly one measure is left — often one that's due anyway. The attic floor, for example, has to be insulated regardless of which subsidy route you take: §47 GEG requires every new owner to reach 0.24 W/(m²K) within two years of the land registry entry. For the loan, the same job with a bit more insulation gets you to 0.14 W/(m²K).
Basis: the technical minimum requirements of BEG EM and the EnEV 2001 (Annex 3) grandfathering thresholds. Not legal or tax advice — the exact assessment of your property is confirmed by a qualified contractor's declaration or an energy consultant.
Renovation loans: the loan covers the purchase, subsidies come on top
KfW 308 finances the purchase price only. For the renovation itself you can additionally use subsidy funding: the BAFA grant under BEG Einzelmaßnahmen for insulation and windows, and KfW 458 for a heating replacement. Both run independently of the 308 purchase loan and reduce the equity needed for the remaining measures.
Important: anyone applying for subsidies on the individual measures themselves still needs an energy consultant — the qualified contractor's declaration is only enough to prove compliance to KfW 308, not for the subsidy application itself.
The application for the individual measures has to be in place before the notary appointment; the 4.5-year deadline runs from the KfW approval — not from moving in.
Frequently asked questions
Is it enough if three out of four measures are already met?
No. For the individual-measures route, all four areas have to be met in the end — windows, façade, roof and heating. If one is still open, that one has to be brought up to standard; the other three can already count through grandfathering or an earlier renovation.
What if I don't know when past renovations were done?
Ask specifically for invoices covering window replacement, insulation and heating during the viewing — not just for the energy performance certificate. Without documentation, grandfathering can't be proven later, even if the measure looks like it's already been done.
Does the qualified contractor's declaration also count for subsidies on the individual measures themselves?
No, only as proof for KfW 308. Anyone who also wants to apply for the BAFA grant or KfW 458 for insulation, windows or heating still needs an energy consultant for that.
Is the result binding?
No. The check gives a rough read on your answers against the technical minimum requirements and the EnEV 2001 grandfathering rule. It only becomes binding through the qualified contractor's declaration or an energy consultant before the application.
Get your property checked in detail
A free, no-obligation first consultation — the commission is, as a rule, paid by the bank. we check your specific property against the four individual measures and coordinate the 308 application before the purchase contract.
Related pages
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Which of the eight KfW programmes could in principle fit your project.
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Editorially responsible: Olga Nikushkina — owner, §34i GewO (German mortgage brokerage), adviser register D-W-132-ZUCB-95. Specialised in German property financing with an international dimension: non-residents, foreign-currency income, cross-border workers, expats. Siegfried Perini is entered in the German intermediary register under this licence as a person directly involved in brokerage and advice (§ 11a GewO), active in real estate since 1992. Not legal or tax advice.