ᐅ Supporting a Low Slope – Which Material to Use for a Retaining Wall?
Created on: 13 Apr 2019 09:17
J
Jochen2015
Hello,
We want to support a low slope to the neighboring property so that we can add some fill to our land in that area (see picture). Since the slope is about 1.2m (4 feet) high at its tallest point and slopes diagonally along the boundary, we are considering building a wall about 80cm (31.5 inches) high.
I have done some research and found the following possible materials:
- L-shaped blocks (80cm (31.5 inches) high)
- Retaining wall panels (80cm (31.5 inches) high)
- Concrete form blocks
- Rectangular planter blocks
Because I want to do this kind of support only once in my life, I’m not sure which option really makes sense in terms of cost-effectiveness. It’s possible that a privacy screen could be installed on top of the wall later.
I would appreciate any feedback.
Best regards,
Jochen
We want to support a low slope to the neighboring property so that we can add some fill to our land in that area (see picture). Since the slope is about 1.2m (4 feet) high at its tallest point and slopes diagonally along the boundary, we are considering building a wall about 80cm (31.5 inches) high.
I have done some research and found the following possible materials:
- L-shaped blocks (80cm (31.5 inches) high)
- Retaining wall panels (80cm (31.5 inches) high)
- Concrete form blocks
- Rectangular planter blocks
Because I want to do this kind of support only once in my life, I’m not sure which option really makes sense in terms of cost-effectiveness. It’s possible that a privacy screen could be installed on top of the wall later.
I would appreciate any feedback.
Best regards,
Jochen
H
HilfeHilfe14 Apr 2019 07:59Nordlys schrieb:
Plant rings are the most economical option, costing 2 euros each. Plants are not included. Karsten 

Very tastefully doneH
hampshire14 Apr 2019 11:46If you are building the wall with L-shaped blocks or formwork blocks and want it to look neat at the same time, you can proceed as follows:
Make the foundation slightly wider and set the wall back by 10-15 cm (4-6 inches). Once the wall is complete, you can cover the front side with mortar and stones. There are several methods and a wide range of design options for this.
Make the foundation slightly wider and set the wall back by 10-15 cm (4-6 inches). Once the wall is complete, you can cover the front side with mortar and stones. There are several methods and a wide range of design options for this.
J
Jochen201517 Apr 2019 07:21@Elina: Your statement is absolutely correct! Since we have added fill material, we are obligated in this case to build a retaining wall (§9 NRG BW).
@ypg: Our development plan only defines boundaries related to "infrastructure facilities." In our case, the Neighbor Law (Baden-Württemberg) and the state building code (Landesbauordnung BW) apply to the adjacent property.
This addresses the topic of retaining walls, and if I understand correctly, I am allowed to build a retaining wall directly on the property boundary (since the neighboring property is not used for agriculture). With my planned dimensions of 80cm (31 inches) height and 26m (85 feet) length, I am well below the maximum height of 2.5m (8 feet 2 inches) for a retaining wall and below a wall surface area of 25m² (269 square feet) (e.g., §10 NRG, §6 Landesbauordnung).
The construction project also does not require a permit if the retaining wall is less than 2m (6 feet 6 inches) high (Appendix to Landesbauordnung, Section 7c).
Please correct me if I have misunderstood anything here.
Thanks to everyone for the contributions so far on this topic.
@ypg: Our development plan only defines boundaries related to "infrastructure facilities." In our case, the Neighbor Law (Baden-Württemberg) and the state building code (Landesbauordnung BW) apply to the adjacent property.
This addresses the topic of retaining walls, and if I understand correctly, I am allowed to build a retaining wall directly on the property boundary (since the neighboring property is not used for agriculture). With my planned dimensions of 80cm (31 inches) height and 26m (85 feet) length, I am well below the maximum height of 2.5m (8 feet 2 inches) for a retaining wall and below a wall surface area of 25m² (269 square feet) (e.g., §10 NRG, §6 Landesbauordnung).
The construction project also does not require a permit if the retaining wall is less than 2m (6 feet 6 inches) high (Appendix to Landesbauordnung, Section 7c).
Please correct me if I have misunderstood anything here.
Thanks to everyone for the contributions so far on this topic.
Jochen2015 schrieb:
@Elina: Your statement is absolutely correct! Since we added fill material, we are obligated to build a retaining wall in this case. (§9 NRG BW)
@ypg: Our development plan only defines boundaries with regard to "infrastructure facilities." That means the Neighbor Law (Baden-Württemberg) and the State Building Code BW apply in our case for the neighboring property.
The topic of retaining walls is addressed here, and if I understand correctly, I am allowed to build a retaining wall directly on the boundary (since the neighboring property is not used for agricultural purposes). With my planned height of 80cm (31 inches) and length of 26m (85 feet), I am well below the maximum retaining wall height of 2.5m (8 feet) and the wall area below 25m² (270 ft²). (e.g., §10 NRG, §6 State Building Code)
The construction project is also not subject to a permit process if the retaining wall height is less than 2m (6.5 feet) (Appendix State Building Code, Section 7 c).
Please correct me if I have misunderstood anything.
Thanks to everyone for the contributions on this topic so far.Hi Jochen, we are planning exactly the same – we added about 60cm (24 inches) of fill, no development plan, Baden-Württemberg. We also want to install about 30m (98 feet) of L-shaped concrete blocks and then put up a fence or hedge on top. How is the total height of the blocks plus fence considered? I assume it is measured from the original ground level or from the neighbor’s side?
Did everything go smoothly for you? I have a bit of a difficult neighbor ;-)
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