ᐅ How much additional cost is expected based on the structural engineer’s calculations?

11ant schrieb:

If the marriage is still annulable (and yes, there’s blood in the shoe), then besides the right of withdrawal, the consequence should be to redo the candidate selection process. Choosing the sweetheart from this, let’s say, somewhat "mixed" group — “a turnkey masonry build with general contractor, a turnkey masonry build with a concept no one really understands, and a timber frame builder offering an unfinished shell” — can lead to nothing more than a fairground pregnancy. Or, to paraphrase the Bremen Town Musicians: “the original poster will find something better than a fiasco anywhere” (once she’s better prepared).

Unfortunately, she hasn’t responded yet about the land vote regarding the basement question.

Hello,
Yes, now I regret that we went with a basement.... Our reasoning was that a house with a basement has more value, and since we have four children, there’s no room upstairs for a utility room or similar. If things go wrong, we will most likely have to increase the mortgage.

Best regards

ypg schrieb:

I thought the black bitumen coating was called a “black tank.” Hmm…

Not quite as good as you might think. Since we don’t have a basement, a lot of soil had to be removed. Over 100 cubic meters (130 cubic yards) of loose earth. We had to hurry to get it out because the neighbors wanted to start as well.
We found a buyer through an online classifieds site, but the plot was about 20 meters (65 feet) away, so with just one day of round trips by truck, not much could be moved.
My husband then simply asked a construction company on site, which disposed of the soil for 2,500 euros. That was 10 years ago, and nowadays excavating a basement would probably cost between 8,000 and 10,000 euros. Maybe another forum member reading this knows more details. Unfortunately, I can’t think of anyone here who has recently built a basement, except on a slope like @kati1337. Exactly because of the huge costs, many people nowadays are leaving basements out altogether.

You were right, I checked – the bitumen coating would have been included – a “black tank” is apparently something different.

Regards

Lauralila88 schrieb:

You were right, I checked—the bitumen coating was included—but a black tank waterproofing is apparently something different.

Ask him what exactly that is supposed to be. As far as I know, the term black tank waterproofing refers to the bitumen coating because it is black in color.

I recommend once again that you get professional advice. If so many things have already been overlooked before even a single wall is up, I can see you running into serious financial trouble. It’s hard to watch.

filosof schrieb:

Even if you probably won’t like to hear it: for us, the disposal including landfill fees for the basement excavation will be invoiced at 15,000€ net.
A completely normal excavation, no contaminated soil or other cost drivers...

I would want to see the landfill invoices at the end, though. How far away is the landfill?

Surely the earthworks contractor has a site where fill material is needed.

Why should he show me the invoice? The offer was for 15,000, which I accepted, and that was 10,000 less than the next highest bid for all the work, including the sewer system and so on.
It is pure clay soil, which no one would want to reuse for filling on their own construction site. I couldn’t even use it to fill the working area myself, as determined by the soil expert (even though he was the only one who thought it made sense to fill in large amounts of gravel here and create a big swimming pool effect under our basement...).
I also double-checked the 15,000 with a friendly earthmover, who said that price was normal for our region (Fünfseenland).

Lauralila88 schrieb:

Hello,
yes, now I regret that we went with a basement.... Our reasoning was that a house with a basement is worth more, and we have 4 children, so there is no space upstairs for a utility room, etc. If worst comes to worst, we will most likely have to increase the mortgage.

And just imagine how frustrated I am now. At first, I was glad that you finally responded at all, but then your reply was so brief, addressing only my last question, and even then only partially. That doesn’t deserve the effort I put into helping you extensively!

We haven’t advanced one bit. We know from your initial post that the geological assessment of the site hasn’t been considered so far. But what the site’s elevation profile implies regarding the basement remains completely unclear. Also, you haven’t even begun to clarify how you ended up proceeding—with first the odd mix of suppliers and second, apparently knowing only three companies.

I can imagine why you started without professional advice. You probably didn’t hire an architect because many prospective homeowners think they are as expensive as a garage, and that floor plans can be drafted independently or downloaded from the internet. And while there are quite a few building consultants like me, they are not always impartial because many also work as sales representatives for prefab home companies. Yet your site has shown that skipping an architect is a really bad way to save money; as I have mentioned in several posts, an architect pays for themselves in the long run, so they are not a luxury.

In my post #40, I even pointed out a specific design firm that follows a similar approach to mine and also offers architectural services themselves. Additionally, I encouraged you to start a dedicated thread for your project to activate a “turbo button” to increase the ways I could assist you. So far, no action on that, and you haven’t responded to this either. You should make use of these missed opportunities, and then you can count on my help again.

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