ᐅ Support boundary wall from own property side

Created on: 6 May 2025 22:42
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BoPaDi24
Hello everyone,

For the house construction, we had to excavate quite a bit of the land to reach the required height. As a result, we are now about 80 cm (31 inches) higher than the neighboring plot. There is already a wall with a fence at the boundary with the neighbor. However, the wall was not founded deeply enough, so the excavation exposed the foundation. Over time, the wall will therefore not remain stable.

Accordingly, we either have to demolish and rebuild it or support it from our side. My first thought was to support it with L-shaped retaining blocks. However, our landscaping contractor advised against this because the “L” would face our house, meaning the unattractive side of the L-shaped block would be visible. He also said that on the side the “L” faces, there are usually reinforcements and similar elements, which would not look good.

Now my question: Are there L-shaped retaining blocks that look “nice” on both sides? Or would you agree with the opinion of our landscaping contractor?

Best regards
Tolentino13 May 2025 09:25
I'll leave this here. @Costruttrice is right. However, I believe these types of supports are more expensive because they contain more steel.

Schematic load case image: vertical support, horizontal slab, base slab, q=5kN/m².


Text and table on embedment depth: support heights, minimum embedment depth, construction height H, and base length L.


That was Ehl...
But similar products are also available from other manufacturers.

Several gray concrete slab seating elements; on the right, technical drawing of an L-shaped concrete component
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BoPaDi24
13 May 2025 10:56
I will bring this up again with our landscaping contractor. After the tip from @In der Ruine, I also came across other options for enhancing the appearance of the L-shaped retaining walls. There is so-called decorative concrete that can apparently be applied directly to the L-shaped walls. It looked very promising in the photos. It’s definitely good to know that there are ways to improve the look of the L-shaped walls afterward. I wouldn’t have thought of that on my own.
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wiltshire
13 May 2025 11:50
Walls can also be tiled. I have attached a sample photo from Portugal for inspiration.

Blue and white decorated Azulejo tiles adorn a garden wall with a bench, next to a green hedge.


Of course, this can also be done with simpler patterns or textures as a DIY project.
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Costruttrice
13 May 2025 15:10
tomtom79 schrieb:

I understood what you mean, but these are not designed to support a slope. They are meant to face the attractive side toward you if you want to retain something on your side of the property.

That’s not correct, see the post by @Tolentino
We are located downhill and had to retain the higher neighboring property. This was planned by the architect and approved by the building authority (building permit / planning permission).

And yes, they were significantly more expensive than the conventional L-shaped brackets.