Service
Modernisation financing.
KfW, BAFA, building society savings and a classic annuity loan — combined into one solution, instead of managing three separate contracts.
Context
Several building blocks — one overall solution.
Modernisation financing is rarely a matter for the bank alone. It is a combination exercise. Programmes of the state-owned KfW development bank subsidise energy-efficient renovation and age-appropriate conversion, BAFA grants directly subsidise heating technology, building society savings bring interest-rate certainty, and classic annuity loans carry the rest.
The most common mistake: three separate financings side by side. Heating via a building society loan, roof via a modernisation loan, solar via your bank. Three contracts, three instalments, three repayment schedules — and none of them properly aligned with the others.
We start the other way round: first sort the measures, then exhaust the subsidies, then structure the remaining financing. The result is a bundled solution that is usually significantly cheaper in the long run — and easier to manage day to day.
Projects
Four projects that regularly come up.
Heating replacement
Gas boiler out, heat pump in — or pellets, a hybrid system, solar thermal. Eligible for subsidies under the federal BEG/KfW schemes, often combinable with a classic annuity loan for your own share.
Energy-efficient renovation
Insulation, windows, roof: measures that reduce energy consumption and your CO2 footprint — and as a rule increase the value of the property. KfW-261 / 262 are the central programmes of the state-owned KfW development bank here.
Extension, conversion, adding a storey
The family grows, the home office becomes a permanent topic, parents move in. An extension or an added storey is often cheaper than selling and buying anew — but it needs to be financed properly.
Age-appropriate conversion
Barrier-free conversion, walk-in shower, stairlift. The KfW-455-B programme provides subsidies here — we check whether it can be combined with classic financing.
Process
From project to disbursement.
- 1
Structuring the project
Which measures are planned, in what order, with what budget? We sort the measures first, before we talk about financing — otherwise the numbers miss reality.
- 2
Checking subsidies
KfW programmes, BAFA grants from the Federal Office for Economic Affairs and Export Control, regional Hesse schemes. Subsidies come first — what remains is financed conventionally. That saves the largest amount in the long run.
- 3
Structuring the remaining financing
A building society loan, a classic annuity loan or topping up your existing financing — we compare what makes sense given your remaining debt and repayment term.
- 4
Disbursement & support
With KfW subsidies, funds are disbursed in tranches — against documentation. We coordinate this with your contractor and energy consultant so deadlines and confirmations line up.
Building blocks
Six subsidy and financing building blocks.
KfW residential building loan (261)
For renovation to an efficiency-house standard. A subsidised loan with a repayment grant — the better the efficiency standard achieved, the higher the grant. Requires a certified energy-efficiency expert.
KfW individual measures (262)
For individual energy-related measures, e.g. only the heating or only the insulation. A lower subsidy amount than the efficiency-house programme, but considerably less effort.
BAFA grant
A direct grant for certain heating technologies and individual energy-related measures. Not a loan but a genuine subsidy rate — applied for before the work is commissioned.
Building society loan
Interest-rate certainty for the renovation phase. Sensible for mid-sized modernisation volumes (50,000–150,000 €), when conventional banks charge surcharges for small tranches.
Modernisation loan without a land charge
Up to around 75,000 € in volume, no land registry entry required. A higher interest rate, but fast processing — sensible for manageable individual measures.
Topping up your existing financing
Your existing mortgage is extended — usually cheaper than a second contract. Prerequisite: the loan-to-value headroom is sufficient and your bank plays along. Otherwise, consider refinancing with a new lender.
Pitfalls
Four mistakes that often cost the subsidy.
Commissioning before applying for subsidies
KfW and BAFA subsidies must be applied for before the contractor is commissioned. Anyone who signs the order first generally loses the subsidy — and that is often a five-figure amount.
Three separate financings side by side
Heating via a building society loan, roof via a modernisation loan, solar via your bank: three contracts, three instalments, three statements. A bundled solution is almost always cheaper and cleaner.
Not factoring in the increase in value
Energy-efficient renovation increases the lending value — and can improve the terms of your existing loan. Anyone who does not negotiate this with the bank leaves better terms on the table.
Bringing in the energy-efficiency expert too late
For the KfW efficiency-house programmes, a certified energy-efficiency expert is mandatory — and they must be involved before the renovation begins. Anyone who commissions them afterwards is often too late for the maximum subsidy.
Related services
Topics that often go hand in hand.
Frequently asked
What clients want to know up front.
- Which KfW programmes are currently active?
- The subsidy landscape of the state-owned KfW development bank changes regularly — in 2026 the central programmes are KfW-261 (renovation to efficiency-house standard) and KfW-262 (individual measures). For age-appropriate conversion, KfW-455-B is running. We verify the current status before every application, because terms and subsidy levels can shift during the year.
- Is modernisation financing through my existing bank worthwhile?
- Often — if there is enough loan-to-value headroom and your bank plays along. We check this before obtaining comparison offers. If your bank is significantly more expensive, topping up with a new bank, including refinancing the existing loan, is often worthwhile.
- Do I need an energy consultant for the KfW subsidy?
- For the efficiency-house programmes (KfW-261), yes — it is mandatory. For individual measures (KfW-262), a certified energy-efficiency expert is also required. We are happy to recommend a consultant, but you commission them separately.
- How long does the KfW application phase take?
- From application to approval, we allow four to eight weeks, depending on the programme and the workload of the KfW partner bank. Important: the application must be under way before the contractors are commissioned — otherwise the subsidy lapses.
- Can I finance a modernisation without a land registry entry?
- Up to around 75,000 € in volume, yes — via classic modernisation loans without collateral in the land registry. Faster, but with a higher interest rate. For larger projects, registering a land charge is usually the more economical option.
Your first consultation — free and without obligation.
30 to 60 minutes in which we listen to your situation, answer first questions and tell you transparently whether and how we can help. No sales pitch. No pressure.
- I.We get back to you within one working day by phone or e-mail.
- II.We arrange an appointment — in person, by phone or via video call.
- III.We assess your situation and tell you openly how we can support you.
Start your enquiry
A few quick steps to your personal assessment. Response within 24 hours, strictly confidential.
- Key facts about your plans and equity
- Occupation and net household income
- Preferred advisor, or leave it open
- Your contact details
Takes about 2 minutes. No credit check at this stage.