ᐅ Raising a Sloped Plot for a Concrete Slab Foundation?

Hello everyone, I have previously raised the topic of a partial basement/cellar for a building plot with a 19% slope.

Today, a homebuilder told us that, partly due to the high cost of building materials, it would now be more cost-effective to backfill the slope and then build the house on a slab foundation. This doesn’t quite make sense to me, since the backfill material must be supported somehow, for example, by a concrete wall. The sales representative said no, that the stabilized backfill is simply allowed to slope gradually and then planted, creating a new artificial slope.

What does the expert community in this forum think about this?

Adding fill is moderately expensive, but all the necessary reinforcements add up. In the end, you get a modest cost-benefit ratio. With that picture and 19%, I definitely wouldn’t force a slab foundation on the plot. It doesn’t really save you money, and you lose the space from the basement.

I completely agree. It also depends on the lot size. If the builder suggests to “let it run out,” then they should calculate how long this runoff would be and what would remain of your property afterwards.

EDIT:
Also, I can't clearly understand your approach anyway. I would just have it calculated now before you start a second thread here about theoretically figuring out “what could be cheaper” 😉.

HalloClarissa schrieb:

What do the experts in this forum say about that?

That would result in an impressive residential tower that would overwhelm anyone looking up at it. Just that suggestion alone would make me consider finding a different building partner.

fromthisplace schrieb:

That would create an impressive residential tower that would overwhelm anyone viewing it from below. Just that suggestion would make me look for a different building partner.

I was already skeptical on my own because the house seller would also be selling a larger house with that option…..

HalloClarissa schrieb:

This doesn’t really make sense to me,

I couldn’t have said it better myself and fully agree with

kbt09 schrieb:

then he should calculate how long this runoff would be and what would remain of your property after that.

Furthermore, a relatively shallow slope (which I don’t even see here) does not hold by itself, and suggesting otherwise without first confirming from the soil report that especially favorable conditions exist is simply nonsense.

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