ᐅ KfW 94 house completed instead of KfW 70 house, surveyor

Hello everyone,

Due to the expected rising energy costs, we decided to go with a KfW70 house.
A local developer was advertising a project for the construction of KfW70 townhouses, and my wife and I decided to take the offer.
To make sure nothing goes wrong, we had it contractually guaranteed in the notarized purchase agreement that the townhouse would be built as a KfW70 house.

After a lot of trouble on the construction site (delays, poor workmanship... the usual) a new energy performance calculation for KfW70 was commissioned (from a second expert office).
And what was the result? KfW94.

The original calculation by the first expert office was incorrect due to faulty data transmission from the architect.
The developer does not want to accept responsibility since the (first) expert office issued the KfW70 certificate. The (first) expert office refuses to take responsibility, claiming the architect provided the wrong figures — and the architect has since filed for bankruptcy.

The project was built without renewable energy sources, which appears to be the decisive factor for not meeting the KfW70 standard.

How do you assess the situation?
Since we have already moved in and everything is finished, retrofitting seems difficult, doesn’t it?
It seems the only option left is financial compensation.
But what amount or method of calculation would be appropriate?

Thank you very much for your help.
Skyfall007

Hello,

skyfall007 schrieb:
...To avoid any problems, we made sure in the notarized purchase contract that the terraced house would be built as a KfW70 house.

A sensible decision!

skyfall007 schrieb:
....And what was the result? KfW94

It is increasingly common for construction projects not to meet the advertised energy efficiency standard. As an expert assessor, I have handled several similar cases.

skyfall007 schrieb:
....The expert office does not want to be blamed because the architect provided the wrong data, and the architect has since filed for bankruptcy.

Here, a distinction must be made between internal and external relationships. Primarily, the contractual relationships between the parties involved are decisive.

skyfall007 schrieb:
....The construction project was not built with renewable energy sources, which appears to be the main reason for the failure to meet standards.

Not necessarily!

skyfall007 schrieb:
....Since we have already moved in and everything is finished, retrofitting seems difficult, right?

That is not necessarily the case either. It depends on where exactly the problem lies.

skyfall007 schrieb:
....The only option left is probably financial compensation.

That is definitely the case.

skyfall007 schrieb:
....But what amount or calculation basis would be appropriate?

I have specialized, among other things, in cases like this.

Best regards.

Hello €uro, thank you very much for your information. However, I lack the imagination for how renewable energy sources can be retrofitted in a completed house. Photovoltaics could work, but they do not sufficiently support the energy balance. For solar thermal systems, pipes would need to be installed throughout the house, and for a ventilation system, electrical wiring. Neither of these options seems like a viable alternative to me.

Hello,

skyfall007 schrieb:
Hello €uro, thank you very much for your information. However, I have difficulty imagining how regenerative energy sources can be retrofitted to a completed house.

Basically, you should first clarify any omissions and responsibilities! ;-)
The retrofitting of renewable energy sources must always be considered in connection with the solution already invested in (e.g., heat generator, system).
In this case, which is actually a “real” developer project, the party responsible should definitely be held accountable for the existing failure ;-)
If KfW 70 was sold and paid for, then KfW 70 must also be delivered ;-) It’s that simple.
Typically, there are two options in such cases:
1. You accept the fact that you have been taken advantage of and live with excessive operating costs over the long term.
2. You take the more inconvenient route and eventually get what you originally expected.
Option 2 is neither free of cost nor stress! ;-)
Uncoordinated, retrofitted “DIY” solutions should be avoided and better overseen by a professional; otherwise, you may just end up from one costly mistake to the next.
QUOTE=skyfall007;42607]...Photovoltaics might work but do not sufficiently support the energy balance. For solar, pipes would need to be installed through the house; for a ventilation system, electrical wiring. Neither of these is an alternative for me.[/QUOTE] You have listed three options, each of which was assessed inadequately ;-)

Best regards.