KfW-70 standard not reached (bungalow)

What role does a planned wood stove with separate fresh air supply actually play in the decision regarding a ventilation system?

Quite simple: The wood stove costs the money that you lack for the ventilation system. We build with controlled residential ventilation, but without a stove (that was a very easy decision in our case). IMHO, a stove is even more expensive, as it somehow also "costs square meters" or requires them; therefore, in my opinion, it only fits large houses with correspondingly spacious living rooms. By the way, life circumstances can also change (working hours, opportunities for ventilation), whereas a once-built house is usually very static.

Honestly, I find this statement borderline. It would have been part of his duties – KfW 70 has been around for a while – to inform you about the steps necessary to actually get a KfW 70 efficiency house certified. The building envelope is only one component.

Hi,

I am also quite astonished here. Are the cards being played openly? Rather not! They wanted to keep the offer price low. That’s it!

Something like KFW-70 must be clearly addressed by the developer from the very beginning. This has not just been around since yesterday. At least the consulting and planning service strikes me as, to put it mildly, insufficient (in terms of a school grade).

Personally, I would not be inclined to sign a construction contract here. What else might come up that hasn’t been addressed? Based on my life experience, one can definitely expect more surprises here.

Debate about ventilation/chimney notwithstanding.

Best regards
Thorsten

Developers often have their own architects/planners. If the main costs lie in the documentation, these are internal costs for the developer, which he can usually absorb, as he also includes a buffer or profit for himself. I would put the developer under pressure and insist on the KFW70, as stated in the offer, or otherwise not build with him. As someone already mentioned, he may have only kept the offer costs low because of this and now wants to push through a higher price, which other companies may have already told you, but with them, you would actually get KFW70. We also negotiated with 3 developers for a long time; in the end, the "seller" (who also wants his commission) calculated back and forth until the offer was almost 10% cheaper than his first offer for the same house. In doing so, he probably didn’t always please his own employer in some things, but as I said, he also wants his commission. And if it’s only a small amount in terms of material and labor costs, the company will surely manage it somehow, especially since you are (at least morally) in the right. Otherwise, have you considered what you might be able to do yourself? I had also never done many things before and must say that everything we did ourselves turned out very well. It does take longer, but you are also more meticulous. You can write anytime, and I can tell you from my perspective what is not a problem at all and what I would stay away from...

actually the thing is simple. if you haven’t signed anything yet you are in a good negotiating position. either they manage to get kfw70 or you back out. without a signature it’s not a big deal. there are plenty of other companies...

without the calculation for the kfw confirmation you won’t get financing approval, without this you don’t need to submit a building permit (or can’t, because all the documents are still missing). where exactly are you now?!

whether a lwz or something similar makes sense or not is completely irrelevant.