KFW94 house instead of KFW70 house completed, surveyor

Hello everyone,

due to the expected rising energy prices, we decided on a KfW70 house.
A local developer advertised a construction project for the erection of KfW70 townhouses, and my wife and I took the opportunity.
To ensure nothing goes wrong, we had it guaranteed in the notarized purchase contract that the townhouse would be built as a KfW70 house.

After much trouble on the construction site (delays, poor workmanship... the usual), the KfW70 calculation was commissioned again (second expert office).
And what was the result? KfW94

The original calculation by the expert office was faulty due to incorrect data transmission from the architect.
The developer does not want to take responsibility because the (old) expert office issued the KfW70 confirmation. The (old) expert office does not want to be responsible because the architect provided the wrong numbers, and the architect has meanwhile filed for bankruptcy.

The construction project was not built with renewable energy sources, which seems to be the decisive criterion for the non-fulfillment.

How do you assess the situation?
Since we have already moved in and everything is finished, retrofitting will be difficult, right?
It probably only leaves the option of financial compensation.
But what amount / calculation basis would be appropriate?

Thank you very much for your assistance
Skyfall007

Hello,

...To make sure nothing goes wrong, we had it guaranteed in the notarized purchase contract that the townhouse would be built as a KfW70 house.

A sensible decision!

....And what was the result? KfW94

Increasingly common that construction projects do not meet the sold efficiency status. As an expert, I have already accompanied several similar cases.

....The expert office does not want to be at fault because the architect provided the wrong figures and the architect has meanwhile filed for bankruptcy.

Here one must distinguish between internal and external relationships. Primarily, closed contractual relationships, i.e. who with whom!

....The construction project was not built with renewable energy sources, which apparently is the decisive criterion for non-fulfillment.

Not necessarily!

....Since we have already moved in and everything is finished, retrofitting is difficult, right?

That is not necessarily the case either. However, it depends on where exactly the "bottleneck" is.

....Probably the only remaining option is financial compensation.

Definitely that.

....But what amount / calculation basis would be appropriate?

I have specialized, among other things, in such cases.


Best regards.

Hello €uro, thank you very much for your information. However, I lack the imagination of how regenerative energy sources can be retrofitted in a completed house. Photovoltaics could work, but do not sufficiently support the energy balance. With solar, pipes would have to be laid through the house, with a ventilation system power lines. Neither is an alternative for me.

Hello,

Hello €uro, thank you very much for your information. However, I lack the imagination of how regenerative energy sources can be retrofitted in a completed house.

Basically, one should first clarify any omissions and responsibilities! ;-)
The subsequent use of regenerative energy sources must always be seen in connection with the solution already invested in (e.g., heat generator, system).
In the present case, here indeed a "real" developer project, the cause should definitely be involved in the existing failure ;-)
If Kfw 70 was sold and paid for here, then Kfw 70 must also be included ;-) Quite simple.
In such cases, there are usually two options:
1. One accepts the fact that one has been taken for a ride and lives with excessive consumption costs in the long run.
2. One chooses the more inconvenient path and actually gets what one originally expected in the end.
Point 2 is neither cost- nor stress-free! ;-)
Unbalanced, subsequent "tinkering" should be avoided and better accompanied by a professional, otherwise you end up from one money pit to the next.
QUOTE=skyfall007;42607]...Photovoltaics could work, but do not sufficiently support the energy balance. With solar, pipes would have to be laid through the house; with a ventilation system, power lines. Neither represents an alternative for me.[/QUOTE] You have listed three options, each evaluated insufficiently ;-)

Best regards