Floor plan planning shortly before submitting the building application

If the basement is not within the heated envelope, there will need to be insulation against this unheated area in my opinion. Usually you go down the stairs into an anteroom with a door, behind which is the unheated area. If the basement is within the heated envelope, I wouldn't know why there should be a door at the bottom.

Really? I know lots of old houses, they all have a door to the basement. Actually, I only know houses where the basement has a door and that’s not just two or so. So you heat the basement, ground floor and upper floor. With that area, that’s quite something.

We also don’t have a door to the basement. Why would we, we now live in an old house that has a door and it’s always open. But our basement is heated. We don’t want a cold bridge. Well, the question is how warm the rooms are heated after the hallway, but they don’t get cold. In our case, the cat litter box will also be in the basement, which is easier without a door.

Really? I know a lot of old houses, they all have a door to the basement. Actually, I only know houses where the basement has a door and that's not just like 2 or so. So you heat the basement, ground floor and upper floor. With that area, that's quite something.

That's how they planned it. Would you do it differently? The basement has guest and hobby rooms, which are each heated.

But our cellar is heated.

Yes, isn't it annoying when I heat the cellar or have to heat it? I might as well just throw the coal into the toilet. Or are you all constantly in the cellar? What do you do down there?

Isn't it silly when I heat or have to heat the basement? I might as well just put the coal directly in the toilet. Or are you all constantly in the basement? What are you doing down there?

You are overestimating these costs. You don’t have to set it to 24 degrees there. Besides, the basement “loses” its heat upwards; it is well insulated against the earth. On the other hand, I only partly don’t understand heating basements in new buildings. The heating is installed downstairs anyway, the few square meters of underfloor heating don’t really make a difference. In return, the rooms are completely variably usable. Wrapping the basement from the outside with insulation also seems easy to me, instead of insulating rooms against each other inside the building (for that, the insulation material there is cheaper, XPS vs. EPS).

You overestimate these costs.

Ok, so you wrap the basement in cotton wool and heat from the bottom up. Then the additional costs are insignificant? Really?