Assess slope

3 meters is a lot, very much, for us it was enough for an entire basement, which is now exposed on one side. For that, the terrace on the ground floor is flush with the floor. And you won't be able to spread the excavation soil on the property, maybe 20% or 30%, but how do you want to manage it with the neighbors? If you backfill, you also have to contain it.

I see retaining walls may be a maximum of 1m and they must even be set back 1m on the property. I would budget at least 70-80 thousand for the outdoor facilities.

Then everything is all good.

Tip: have the architect draw all retaining walls and have the GU price them. Otherwise, there could be a nasty surprise later.

The annoying thing is, of course, that we can't do this anymore before buying the plot and it probably doesn't make much sense either. What price range should one generally expect for retaining walls?

We are currently just considering whether the plot makes sense. Everything else around it fits very, very well. We just can't exceed our budget by €100,000 if it suddenly becomes that expensive because of the plot.

I see retaining walls may be a maximum of 1m and they must even be set back 1m on the property. I would calculate at least 70-80 thousand for the outdoor facilities

The retaining walls specified in the development plan relate to the row of houses behind us that have to build a retaining wall. No retaining walls have been specifically indicated for our property. Unfortunately, we are also not very familiar with this here

These are 95 cm walls

I think with this height, the structural engineering won’t be a surprise.

Build with the slope. Then you won’t have a basement, but a lower ground floor. Our lower ground floor is normal living space.

Outdoor area is more expensive.
A wall here, filling a few cubic meters there, digging here, it costs money.

The annoying thing is, of course, that we can no longer do this before buying the plot and it probably doesn’t make sense anymore. What price range should one generally expect for retaining walls?

We are currently just considering whether the plot makes sense. Everything else around it fits very, very well. We just can’t go over our budget by €100,000 if it suddenly becomes that expensive because of the plot.

What is your budget? I would prepare a cost overview before buying. No matter how trustworthy the general contractor is, the slope will have its price. I couldn’t imagine it before the construction either. When I saw the excavation pit, I just thought: f*ck, what have you gotten yourself into. I was lucky to have a planner who placed the garage and house in such a way as to require as few retaining walls as possible. But I didn’t really have a feel for the slope during the planning phase yet.