Compare offers from construction companies

  • Erstellt am 2019-06-13 19:18:42

metalex

2019-06-13 19:18:42
  • #1
Hello everyone,

after we purchased a plot of land, we are currently in the process of obtaining offers from both solid house and prefabricated house providers. From the first received offers, it became clear that these are very difficult to compare:
1. we do not know what to pay attention to in the offers (what is necessary, what can be omitted, what must absolutely be considered?)
2. the offers are incomplete or partially incorrect, i.e., different from what was agreed. An example of incompleteness is that in one offer, the basement was sitting on the ground because the excavation work, frost protection, and gravel were missing. We did not notice this in the lengthy offer at first, only when another provider read this offer and informed us.
3. no provider has so far factored in that the plot needs to be "filled" because it lies below street level
4. we have decided to build without a basement because the development plan requires a waterproof basement. However, the conducted geotechnical report indicates that there may be cost-intensive additional measures (e.g., foundation on ductile cast pipe ram piles or soil improvement) if only a slab-on-grade is built (there are very settlement-prone peat soils, and after intense rainy periods, rising layer and groundwater can occur, which can rise up to the terrain surface).

Of course, we want to have as few unforeseen costs as possible and, on the other hand, be as little annoyed as possible later because we forgot something about the house. I am sure we are not the only ones struggling with such or similar questions. What experience have you had and what things must we definitely pay attention to?

Regards, metalex
 

ypg

2019-06-13 21:59:23
  • #2


I would be surprised if the offers are individual. It is too much work to write specific offers for customers who do not sign. You will very likely get the standard description. Your problem with the ground is individual and will be priced in after the contract signature.

See above.

Oh dear! As already said above: a general contractor first has to push a ground engineer to write an offer. Since you have not signed yet, it may be that the effort of both was in vain.

That’s how I see it.
 

Basti-ac

2019-06-13 22:01:25
  • #3
Stupid question, but if you sign first and the general contractor demands exorbitant amounts for these works, is there any way to get out of it again? (Awarding this service in-house or similar?)
 

Tina mit K

2019-06-13 22:16:01
  • #4
I can provide a current cost estimate here as a rough figure because of the pile foundation: Our bungalow has a slab foundation of 136 sqm and we needed 22 micro-piles that were drilled 14 meters into the ground. A team of 5 men worked for a week and it cost us 29,500 euros gross. Additionally, we needed a stronger slab because of this, which cost another 10,000 euros. The extra 1,500 euros for the structural engineer who calculates where the pile points have to be set were just peanuts compared to that.

However, we already had the offer for the pile foundation before signing with the house builder, and the company still stuck to their fixed price more than half a year later.
 

ypg

2019-06-13 22:24:25
  • #5
Bad. It's like the cat chasing its own tail.
 

Curly

2019-06-13 22:50:45
  • #6
Our general contractor gave us a complete offer including all earthworks before signing the contract, which also included a filling of 80 cm over the entire property, topsoil was nicely distributed everywhere, everything was included. So no additional costs arose later. I also met a family who paid 80,000 euros for their pile foundations, so it can get very expensive.

Best regards
Sabine
 

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