ᐅ Our Sloped Site – Concrete Slab vs. Basement

We have a sloped plot and have planned a living basement, which will have floor-to-ceiling windows on the downhill side.
Would you recommend building a basement or a slab foundation with slope stabilization for this kind of incline?
Our current building footprint is 9.12m (30 feet) by 8.5m (28 feet).
There is a slope of about 1.8m (6 feet) over the 8.5m (28 feet) length.

I have attached the survey results (plot 1295) with the elevation profile and our thoughts on the house placement.
Basically, we would prefer to build larger on a slab foundation with a wood frame structure and avoid a concrete basement.
I’m looking forward to your ideas.

The soil report is unfortunately still in progress.
P.S.
The civil engineer would recommend a basement, but I would probably say the same in his position.

derwilder85 schrieb:

We have a sloped plot and planned a home basement, [...] Over 8.5m (28 feet), there is a slope of about 1.8m (6 feet).

That is very sensible, since my basement rule clearly supports "a basement per house" here. To do without a basement in this case would be a Pyrrhic victory, as the saying goes.

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Basement. However, using timber framing in the basement is not that easy. At least, it didn’t work for us.

Borderline case, I think both are possible. It also depends quite a bit on how you want to design the garden and terrace, as well as how and where your living room is located.

The choice depends on budget and living preferences. A basement with living space is likely more cost-effective in the end because the building remains compact. Managing ground movements for a slab foundation, including insulation and slope stabilization, is not straightforward. We decided against a basement with living space—but no general recommendation can be derived from that.

@hampshire you haven’t backfilled either