That's exactly how we have to do it. Since we have a large roof, we need a large soakaway pit. Unfortunately, it’s not free either. I hope we can pay for it on the side. I've just budgeted 1000 euros for it.
Is a captain's house depicted in your calculation? Yours? Replace floor-to-ceiling windows upstairs as well, everywhere, with standard ones. Then the fall protection grid will also be eliminated. Adjust the windows, no double windows with Dteg, but 110 single tilt-and-turn windows. Waiver of KFW 55. Instead, heating with gas boiler and solar thermal. This results in about 10 savings without compromise.
Hi, what does Kapitänshaus mean? Yes, but that is ours. We replaced the floor-to-ceiling window in the bay window upstairs with a normal one. Savings zero. We don’t have any fall protection grid, it is fixed at the bottom. What does DTeg mean? Giving up KfW is not possible, the 100,000€ from KfW have already been fully paid out.
Mullion. So double windows with a central mullion are usually more expensive than two single windows. Captain's house: The gable with the window that replaces the dormer is a captain's gable. These houses traditionally stand in the north at harbors, where the old captain then looked out to sea through the upper window and dreamed of long voyages.
Instead, heating with a gas boiler and solar thermal. That gives a clean 10% savings without sacrifice.
Dear Karsten or Carsten? (which would you prefer?)
Elsewhere, there was already a note that the statement is nonsense. If the builder constructs exclusively with heat pumps, his equity for gas and ST is higher than the price of the heat pump.
You can’t put it that way in general.
Especially since there's nothing more to gain from the general contractor afterwards. Changes then tend to only cost extra, no matter what (see 305er's posting about the already changed window - the change is more expensive than the material savings).