ᐅ Looking for a concrete slab contractor in the Stuttgart area.

Hi everyone,

Which ground slab contractors from the Stuttgart area would you recommend?

Best regards
BenBaut

Nowhere and under no circumstances. Concrete slabs inherently involve interfaces, and I would never, ever delegate the responsibility for precise execution to separate parties—neither in the hope of saving money by having a "competitor" do it cheaper, nor, even more so, because a home builder wants to avoid responsibility or risk. For me, being unwilling to include the scope of the concrete slab (including all connections) in the contract would be an absolute deal-breaker when choosing a home builder.

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Well, with prefabricated houses, it is not uncommon to have the foundation slab or the basement constructed separately.

borderpuschl schrieb:

Well, with prefab houses, it’s not uncommon to have the foundation slab or basement constructed separately.

Secondly, taking advantage of a construction novice’s inexperience by a building professional does not become any better simply because it is unfortunately not uncommon, and
firstly, this practice dates back to a time when prefab houses were mostly built on basements.
With a full basement under a one-and-a-half-story house, one might argue that it can be considered a separate building element. In contrast, a simple foundation slab, in my opinion, is just an accessory service to the delivery of the entire house. No one would accept being referred to parts trading when buying a new car—even if it’s just a basic model like a Dacia—to get essential components such as side mirrors and bumpers. Therefore, with a slab-on-grade house, this is simply shameless passing of responsibility to inexperienced buyers by using the outdated argument that when prefab houses were still mostly built on basements, these parts were only offered from the top edge of the basement ceiling (TEBC). Back then, we had Kaiser—and the Ergo Group was still called Hamburg-Mannheimer *LOL*
Today, slab-on-grade houses are the standard, and those pesky “side mirrors” (foundation slabs) must be included, period. Anything else is unprofessional. Even lawyers are familiar with this phenomenon of changing practices—they call it the “reality of life.” Offering a house without a basement still as “from TEBC” is completely out of touch and far removed from market reality—even if competitors consider their clients naive enough to accept it. This is about a blatant refusal to acknowledge reality when the final result doesn’t fit as expected. The “consumer” builder should not let these tricksters get away with it!

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The foundation slab contractor builds the slab according to the flatness tolerances, etc., specified by the prefabricated house manufacturer.

The prefabricated house manufacturer then inspects the finished slab for compliance with the flatness tolerances.

Beforehand, also check the requirements for KfW40+ standard (insulation, etc.) with the energy consultant.

In addition to the prefabricated house manufacturer’s inspector, have an independent expert/engineer review the slab.

So where is the problem?

By the way, the prefabricated house manufacturer partners with Glatthaar for basements or slabs.
However, they are about 20-25% more expensive than other well-known slab contractors.

BenBaut schrieb:

Where is the problem then?

If something doesn’t fit, you will have to chase the slab contractor and convince them to make corrections according to the prefab house company’s specifications. In the worst case, the company denies that there is a problem. Meanwhile, the prefab house company disrupts your construction schedule and no longer acknowledges the construction period guarantee (and the associated cost guarantee). The on-site work was not completed on time.

If you remove a service from the contract (or don’t include it at all) and manage it yourself, you take full responsibility for anything that could go wrong. If the house company is also responsible for the slab, it’s not your problem. You ordered a house with a slab, and if the prefab house company contracts it out, they must be accountable for any issues.

Of course, they subcontract a lot—it makes sense. And if you order the same service directly from the company yourself, you will save some money. But don’t just see this as “someone is simply adding extra costs”; rather, consider it an insurance against coordination problems. Whether that is worth it to you…