Load-bearing capacity of L-stone and water drainage at 45° slope

Without a sewer connection, draining the wall will be difficult, the cistern has to be emptied somehow.

That’s why I was hoping for the solution of an infiltration cistern, those do exist, don’t they?

You say the neighbors above you also have 2m L-blocks? Do you know how they solved the drainage?

No, unfortunately not. But I strongly assume, since it’s an older residential area and we will fill a building gap, that they all still discharge into the sewer.

Have you planned a drainage above your house? Kind of like a “protection” against the upper neighbor?

No, I don’t even know what that is.



Thanks for your comments! I’m totally overwhelmed with all these things right now and need to sort things out, too much input at once.
These are really things nobody told us, not even the earthworks contractors who were here…

I will bring up the overflow of the cistern at the office, they are usually very nice, with the right arguments that could work. But we will actually need a pump for that, because the sewer is definitely above if we want to place the cistern down there (which actually makes sense for the drainage of the wall).

You have to plan the garden with the house so that something reasonable comes out of it.

Too late...
It’s been feeling for months as if I’m planning the house alone and I face new problems every week...

With the cistern pump that you need anyway, you can also pump the water into a [Kanal]. It is basically just another irrigation circuit.

That is then meadow;) not lawn. Golf lawns require more care and effort.

Yes, of course. But for most people, it will effectively be meadow-like. Very few make their grass a hobby.

I only know people who want a kind of lawn. Mostly robotic mowers and preferably automatic irrigation. The effort is then minimal. I am not talking about golf lawns with a lot of fertilization, dew sweeping, topdressing, etc.

If I have looked around in the last few days, there have been a lot of dandelions and daisies blooming. So strictly speaking, not a lawn. I also only know a few people personally who actually regularly water, fertilize, and scarify. But - to get back to the topic - this is also a point to consider when planning the house. What kind of outdoor facilities, how much money and time do I want to invest there.

A nice outdoor area can also manage with a 6000 liter cistern. Especially since the property is not huge. It wouldn’t occur to me to choose planting that needs to be watered regularly.

You’re building wooden posts, right?
Do you have a cross-section in your plans? Sorry, I can’t make sense of the cube and green.
What regulations are there for additional terraces on your property?

Really talk to your neighbor who has objections. Since he is apparently an expert and knows the property, he might be able to offer you a practical solution.