ᐅ How much can I actually save by building with KfW compared to standard construction?

The title says it all:
What do I actually save by building a KfW house in comparison?

Under the same conditions: How much money do I save annually by building a KfW house?
Are there any calculations available for this?

Nothing at all. Why? You initially spend more money compared to KfW 70/55 standards or the Energy Saving Ordinance.

Whether and how much energy cost you will save over the following years must be calculated individually. Why? Because the conditions (climate zone, current living area, current energy consumption, planned building technology, planned living area, planned consumption) vary for each case.

Regards

Sascha

SaschaW schrieb:
Nothing at all. Why? At first, you spend more money compared to KfW 70/55 standards versus the Energy Saving Ordinance.

This is not always or necessarily the case. The investment is definitely higher, but subsidies are available, and the operating costs should be lower. The aim is to replace high future operating costs with an upfront investment. However, effort and benefit should be in reasonable proportion. This is not always true. Especially with overly optimistic projects, the higher investment essentially goes to waste. Then you have a money pit.

Best regards.

In general, no one can really answer that.
One thing is certain: energy prices will rise. No one knows how or when. That’s why I would at least build to KfW 70 standards.

Whether the loans are worthwhile is another matter; we gladly take the 2,500 € from KfW with the 55 program. We would have bought a mechanical ventilation system anyway.

I honestly can’t imagine that there are no calculations or comparisons regarding this. A KfW-certified house is generally more expensive, so it should be possible to determine the current energy consumption with and without the KfW standard.

It’s clear that prices are rising, but they increase independently of the KfW rating of the house.

Since various sellers offer identical houses with different KfW ratings, there should be data available on this. It’s a pity that none of you seem to know about them.
Paying more “blindly” just because a house has a KfW label isn’t very smart.
Unfortunately, this happens more often than you might think, which is why various refrigerators, washing machines, etc., also sell so well.

Gluecklich schrieb:
I simply can’t imagine that there are no calculations and comparisons on this topic.

They do exist. However, a baseline assessment (actual demand (capacity, energy) for heating, domestic hot water, and possibly ventilation) must be available.
In construction projects I am involved with, this is always provided, as it is the basis for any economic decision. I am always surprised how naively many people sign purchase or construction contracts without knowing what consumption costs they should expect.

Gluecklich schrieb:
…A KfW house is generally more expensive, so it should also be possible to determine how – based on the current data – consumption compares with and without KfW.

I’m happy to do that, just send the documents!

Gluecklich schrieb:
…Too bad no one here knows about them.

I know them from some construction projects. However, they cannot be generalized.

Gluecklich schrieb:
…Paying more "blindly" just because it says KfW on it is not exactly smart.

Correct! Complaints usually come afterward, when there is hardly anything left to change.

Best regards.