House without basement on a plot with a 13% slope

We have found a plot of land with a 13% slope, the lower end at the street side. We are considering building a house on it without a basement (for cost reasons). The house would have a ground area of 10m*10m and behind the house there is supposed to be a terrace 3.50m wide. So overall, the house has a depth of 10m+3.50. With the slope, the front edge of the house would have to be 13.5m*0.13=1.76m above ground. Since the terrace at the back must end slightly above ground, at least 30cm are added, so it will be about 2m at the front. So a lot of filling would be needed in front. Does anyone have experience with this, whether this is reasonable and doable with manageable costs? The alternative would be to build with a basement. But the building ground is more difficult and it must be constructed to be waterproof against pressurized water.

Basement. On the hillside side: building services, utility room, storage room, and at the front towards the street: guest room, study, entrance, etc. Hillside retaining, filling, compaction, foundation slab, exterior stairs (which must be kept free of snow and ice in winter) will certainly cost more.

feasible

yes

reasonable

no

We have found a plot with a 13% slope, lower end at the street side.

I recommend continuing the search a little longer.

What are manageable costs for you? We have a slope of 2.5-3m over 21-22m. Just retaining the terrain with L-shaped stones and filling the terrace will cost us €27k.

You better choose another plot of land