Energy-efficient construction keeps a property’s energy needs very low. A house it is energy efficient when the minimum possible amount of energy must be supplied from the outside. With the KfW Efficiency House 100, the KfW development bank sets the standard in terms of energy savings. This serves as a comparison for new buildings or energy-renovated buildings. THE KfW supports a construction project if the building consumes significantly less energy than the reference building. Developers can expect particularly high financing if they can also generate energy with their new building. To ensure the construction of energy-efficient houses in the future, the values are continuously adjusted and the standard is raised.
The KfW House of Efficiency
One corresponds to a new building built strictly in compliance with the Energy Saving Ordinance (EnEV). House of Efficiency 100. Anyone whose construction project falls below the maximum permitted values according to EnEV can hope for financing from KfW. For example, if a house requires only 55% of the energy of the reference building in question, it is a KfW Efficiency House 55. Even better would be a KfW Efficiency House 40, which requires only 40% of the energy of a reference building.
Many builders initially ask themselves: how can I get KfW financing?
Usually it is the domestic bank that submits the loan request. Ask your banking advisor specifically for various funding opportunities, including regional ones. Or inquire at the Federal Ministry for Economic Affairs and Energy. There you will find a database that lists all financing opportunities by region and financing type. If you The following tips for building a house If you take this to heart, your home will become a true energy saving miracle and you will be almost guaranteed KfW financing.
South orientation of frequently used living spaces
Rooms located on the south side of the house require less heating. It is therefore advisable to orient heavily used environments, such as the living room, towards the sun. For the right temperature in the bedroom, this should be on the north side.

The more the house is tilted, the worse its energy balance. Because every additional square meter of wall surface means more heat and therefore energy loss.
Excellent thermal insulation
No matter how compact a house is with as little wall space as possible, it still loses heat if the walls are poorly insulated. Of course the heat should stay indoors.
High quality windows
Builders should pay attention to the high quality of windows in their construction project. Glass should also be covered. Triple-glazed windows are more expensive to purchase, but they save a lot of energy and therefore money in the long run.

Avoid thermal bridges
Thermal bridges are external surfaces or components through which more heat is released to the outside than to adjacent components. Typical thermal bridges are, for example, balconiesas they break through the thermal insulation. Nowadays these are usually added from the outside or equipped with thermal separation.
Ventilation with heat recovery
Anyone who has installed ventilation with heat recovery in their home has ventilation and energy saving at the same time. These systems distribute warm air throughout the home via ducts and extract stale air. Our climatic brick ceiling combines natural thermal radiation with silent cooling. It not only saves energy, but also ensures a pleasant climate and a spatial feeling.
With these six simple tips you can not only save a lot of energy with your new building, but you can also expect a subsidy from the KfW development bank. In addition to the savings from KfW financing, there are some key things that every builder should follow to stay within their budget.
Save money when building a house
- At the beginning you should set a fixed budget and always keep an eye on the costs. In any case, this will happen during the construction of the house Additional costslike property development, they come to you. Therefore there should always be a certain financial buffer, also to deal with any special requests
- Ask yourself the question: How much space do I actually need? Think carefully about how many rooms you need and what they will be used for. You should keep in mind that children’s rooms, for example, are not used permanently and can be converted later.

- Another major cost item for home builders is the property itself. Builders should therefore ask themselves the question: is a large garden really necessary or perhaps a little less so?
- The so-called can also be extremely easy on the wallet vacant lots To be. Vacant buildings that cannot accommodate a conventional house are usually offered by municipalities at a lower price. By forgoing a large garden and using clever construction, it is still possible to create very beautiful homes on these smaller plots.
- On Keller Do without: if the cellar is only needed for heating and as a laundry, it is advisable to do without it and store the appliances in a storage room. This way you can save money
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