Hello everyone!
This is my first post since we started planning to become homeowners.
It’s about the cost estimation—specifically for our earthworks. Here’s what we know about the plot:
- It is 374 sqm (4029 sq ft) in size
- The house has external dimensions of 9.27 m x 11.07 m (30.4 ft x 36.3 ft) and will be built without a basement on a concrete slab
- A garage and a parking space in front of it are planned
- Currently, there is a height difference of 1.30 m (4.3 ft) between the ground level and the underside of the slab, so about 90 cm (35 in) to the bottom edge of the slab
- Our builder will supply 40 cm (16 in) of capillary-breaking material for backfilling (free of charge or included in the house price)
- According to the soil report for the building site (attached, starting on page 33 Baufeld WA 4a*), an average of 40 cm (16 in) of topsoil has to be excavated
- If I understand the above report correctly, no soil replacement is necessary
I wanted to ask for a realistic estimate of the costs involved (excluding utility connections, which I will calculate separately). We are currently estimating around 30,000 euros. Online, I find anywhere between 5,000 and 80,000 euros, which doesn’t really help. The soil conditions are probably not ideal due to the significant amount of fill material.
Looking forward to your advice, and thanks in advance to everyone involved!
This is my first post since we started planning to become homeowners.
It’s about the cost estimation—specifically for our earthworks. Here’s what we know about the plot:
- It is 374 sqm (4029 sq ft) in size
- The house has external dimensions of 9.27 m x 11.07 m (30.4 ft x 36.3 ft) and will be built without a basement on a concrete slab
- A garage and a parking space in front of it are planned
- Currently, there is a height difference of 1.30 m (4.3 ft) between the ground level and the underside of the slab, so about 90 cm (35 in) to the bottom edge of the slab
- Our builder will supply 40 cm (16 in) of capillary-breaking material for backfilling (free of charge or included in the house price)
- According to the soil report for the building site (attached, starting on page 33 Baufeld WA 4a*), an average of 40 cm (16 in) of topsoil has to be excavated
- If I understand the above report correctly, no soil replacement is necessary
I wanted to ask for a realistic estimate of the costs involved (excluding utility connections, which I will calculate separately). We are currently estimating around 30,000 euros. Online, I find anywhere between 5,000 and 80,000 euros, which doesn’t really help. The soil conditions are probably not ideal due to the significant amount of fill material.
Looking forward to your advice, and thanks in advance to everyone involved!
H
Hafenstraße14 Mar 2022 14:11netuser schrieb:
No, as far as I understand, the MSH is included and provided by Weberhaus.
It is installed by them during the construction of the foundation and the slab. You probably won’t have much hassle with the utility companies themselves, apart from scheduling after the house is set. Everything is correct. This is how I imagine it as well. First: the site is raised in the area of the slab (by the earthworks contractor). Then: Weberhaus pours the slab, including the foundations and frost protection strips, with the MSH. Finally, the utility company comes and digs the shafts toward the street and connects everything.
Hafenstraße schrieb:
Everything is correct. That's how I imagine it too. First: The ground will be raised in the area of the foundation slab (civil engineer). Then: The foundation slab including footings and frost protection strips will be poured by WeberHaus, with MSH. Finally, the utility provider will excavate the manholes towards the street and connect everything.Exactly like that 🙂
Good luck!
PS: check out Adomeit Würselen ... I can recommend them.
H
Hafenstraße14 Mar 2022 14:39Hafenstraße schrieb:
I would like to add the following: The purchase contract for the plot (seller: City of Duisburg) explicitly states that additional foundation work may be required and that the buyer is aware of this at the time of signing. This means the city disclaims responsibility, and I am fully responsible for any work that needs to be done before I can start building...Can anyone make sense of this? Is such a clause common? Apparently, the ground is not that bad after all. And even if this wording were not included, the risk related to the building site would still lie entirely with the buyer, right??
H
Hafenstraße14 Mar 2022 14:42netuser schrieb:
Exactly like that 🙂
Good luck!Thank you! It really feels good to read some encouraging words. I hope the excitement is justified...
netuser schrieb:
PS: check out Adomeit Würselen ... I can recommend it.I have contacted them, thanks 🙂
Hafenstraße schrieb:
Can anyone make sense of this? Is such a clause common? Apparently, the soil isn’t that bad. And even if this wording wasn’t there, wouldn’t the risk related to the building ground still lie completely with the buyer?Yes, I believe it is standard or common practice.
The city simply cannot know what might be buried on your property or what specific requirements you have for the house construction.
Therefore, it is not liable for any additional costs that may arise if you encounter peat layers, skeletons, Roman ruins, or other obstacles during the earthworks...
P
Pitiglianio14 Mar 2022 17:12The soil survey was also a significantly underestimated cost in my case. I definitely called about ten geologists within a 100km (62 miles) radius. On average, they quoted around 2,000 EUR net. Additionally, some had waiting times of up to 4 months.
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