Build a terraced end house with an additional unit (GÜ) on your own

What else would you use the basement for, Katja?

Storage space - that is completely missing. Maybe a small workshop for dad.

Because I would probably try to arrange the rooms so that you get by with 3 floors.

I wouldn’t try that and I didn’t assume that either. Do you want to make a living basement out of it?

This is all a calculation example.

That’s right. Only the scale tips drastically towards the basement, since walls have to be built there inevitably.

And honestly: the attic is cozy. Much nicer than a basement.

I totally agree with you - but as I said - the basement walls will definitely be built. Whether with a roof or without. Now reconsider.

The best would probably be to put an underground garage in there

Not necessarily. A 7 meter external dimension can still be managed well without load-bearing walls.

That is decided by the structural engineer. With 3 floors it’s tight. I think he will make a wall or pillar in the middle so he can sleep peacefully at night.

What kind of heating is going to be installed there anyway?)

A air-to-water heat pump with the corresponding underfloor heating. Has anyone already dealt with basement walls made of precast concrete elements? Sure, the usual basement builders sell them for a lot of money. However, a lady had written to me who ordered the basement walls from a concrete plant that actually makes agricultural silos. Our general contractor would probably do the formwork. Does that make sense price-wise?

I wouldn't try that and I didn't expect it either. Do you want to make a basement apartment out of it?

Yes, I would. Because...

That's right. Only that the balance drastically tilts towards the basement, since the walls have to be built there inevitably.

... the basement still ends up being more expensive than just foundations. Of course: not in proportion. But if you don't have the money, weighing it doesn't help.

Now weigh it again.

This terraced house has its reasons. If had more money, it wouldn't be this cheap house, nor would he generally plan without a basement.

Saving house

It's terrible that half a million total budget nowadays counts as a saving house. It sounds a bit presumptuous and arrogant.

Yes, I would. Because...
... the basement still ends up being more expensive than just foundations. Of course: not in proportion. But if you don't have the money, weighing the options doesn't help.

That’s true, of course. In the end, it doesn’t help at all if somewhere 20K is missing; then it’s missing and that’s that. It’s just the heartbreak that we all die from here...

A basement without an attic conversion would also be an option with that slope. The only question is how the neighbors will shape their land. If they all sit a floor higher on the terrace and you sit in the valley, that’s really funny.

Has anyone already dealt with basement walls made of precast concrete elements? Sure, the usual basement builders sell them for a lot of money.

However, a lady wrote to me, she had ordered the basement walls at a concrete plant that actually makes agricultural silos. Our general contractor would probably do the formwork. Does that make sense price-wise?

I would call companies all day long here and request one quote after another.

The formwork thing is certainly a common option. But when I saw how fast our mason built up the walls – he was 3 times faster. On the other hand, the concrete truck for the floor slab comes anyway… well, you can only ask.