ᐅ Offer(s) for a New Construction Project

Maria16 schrieb:
As I said, I only glanced through the first two pages. If only the unit price is given everywhere but no quantities are calculated, the low price is obvious. It will definitely get higher once you replace the quantity "1" with real numbers.

And sorry to say this, but after seeing your other thread: YOU should invest time and effort into your project, not the users here.
To pick up the example of 27 cm (10.6 inches) ceiling thickness: why would that be better? Or shouldn’t the structural engineer specify what is required—possibly after it’s clear whether ventilation is installed within the concrete slab? AND THEN also taking a look at the zoning plan / building permit that might regulate the height of the walls, so an additional 7 cm (2.8 inches) in construction could mean an exception to that height?
(all just hypothetical examples that need to be adapted to YOUR reality—something no one here on the forum can do for you)

Thanks for your reply, but please keep answering here:
https://www.hausbau-forum.de/threads/Angebot-e-für-einen-Neubau.30568/page-2#post-315078

I don’t understand the comments about "putting in more effort," especially when I look at the section "floor plan design"—many want a draft or a revision of the draft... I rarely read anything like "leave it to the architect," on the contrary, some get really involved.

Bookstar schrieb:
55,000 euros for the shell construction? What is that supposed to be? Definitely not a house, at least 100,000 euros more are missing

It’s not the first time I’ve seen you call something “too cheap,” whether it’s the shell construction, garden, or terrace roof ... Either you have a completely different price level or you have a big heart for craftsmen. Because in my experience, these statements are consistently wrong. I recently built a flat-roof house, two floors, 195 sqm (2,100 sq ft) of living space for 75,000 euros shell construction. Completely made of sand-lime brick. In North Rhine-Westphalia. Add 25,000 euros for the façade (ETICS / external thermal insulation composite system) and 10,000–15,000 euros for the roof. A neighbor spent 150,000 euros shell construction for 250 sqm (2,690 sq ft) of living space, integrated garage, full basement (130 sqm (1,400 sq ft)), monolithic, perlite-filled clay blocks, energy standard KfW 55. Just to compare. But that is basically a high-end project and hardly comparable to the usual 140–150 sqm (1,500–1,615 sq ft) detached homes that are typically discussed here.

tumaa schrieb:
What do you think of the offer, should I have anything changed?

tumaa schrieb:
Each provider often lists things differently, so you lose track and can’t really tell which one would be better for me....

Unfortunately, the only thing to say here is: your own fault. Apparently, you are trying to manage the subcontracting yourself, and this is what happens. A professional would have prepared a bill of quantities based on the house planning. Same items, same quantities. On this basis, offers are requested and compared side by side. That is now your task. The alternative is to buy “a piece of shell construction,” then the risk of incorrect quantities falls on the contractor. However, potential disputes are part of that, so turnkey is usually the safer option.

tumaa schrieb:
It’s not about price only, but also suggestions for improvement... a friend told me, for example: instead of a 20 cm (8 inch) slab, better take a 27 cm (11 inch) one...

Is there a reason for that? Is your friend a structural engineer? Has he considered the impact on building/room heights, costs, and structural requirements with his “good” advice? Probably not. Then he can just do like Dieter Nuhr likes to say ... and you should get qualified professional advice, otherwise this might become quite a funny situation for you.

guckuck2 schrieb:
This isn’t the first time I’ve read you say “too cheap,” whether it’s about the shell, garden, or patio cover... Either you are simply operating within a completely different price range, or you have a big heart for contractors. Because in my experience, these statements are consistently wrong.
Just recently, a flat roof house was built—2 floors, 195m² (2100 sq ft) of living space for €75,000 (roughly $81,000) as shell construction. Entirely made of calcium silicate bricks. In NRW. Additionally, €25,000 ($27,000) for the facade (ETICS / external thermal insulation composite system) and €10,000-15,000 ($11,000-16,000) for the roof.
A neighbor spent €150,000 ($162,000) for a shell construction on 250m² (2700 sq ft) of living space, including an integrated garage, a full basement (130m² / 1400 sq ft), built monolithically with perlite-filled Poroton blocks, KfW 55 energy standard. Just for comparison. But that’s almost a premium level and hardly comparable with the usual 140-150m² (1500-1600 sq ft) single-family houses typically discussed here.

Unfortunately, all you can say is that you have no one to blame but yourself. Apparently, you’re attempting to manage the contracts yourself, and this is how it turns out. A professional would have created a detailed bill of quantities based on the house plans—same items, same quantities. Offers would then be requested and compared side by side. That’s your task.
The alternative would be to buy a “partial shell,” which shifts the risk of incorrect quantities to the contractor. But that also entails potential conflicts. So it’s usually better to go for a turnkey solution.

Is there a reason for this? Is the acquaintance a structural engineer? Did he consider the impact on the building, ceiling heights, costs, and structural stability with his “helpful” advice? Probably not. Then he might as well take Dieter Nuhr’s approach... and you should get qualified expert advice, otherwise this could get pretty entertaining for you.

A 27cm (11 inches) concrete slab. Your acquaintance, meaning the original poster’s, really knows his stuff. 🙂

guckuck2 schrieb:
Is there a specific reason for that? Is the acquaintance a structural engineer? Has he considered the impact on the building/ceiling heights, costs, and structural integrity with his "good" advice? Probably not. In that case, he can follow Dieter Nuhr’s example ... and you should seek qualified expertise, otherwise this could get quite complicated for you.

Yes, he also does structural engineering......

tumaa schrieb:
Yep, he also does structural engineering......

So why does he recommend this then?
Soundproofing?

guckuck2 schrieb:
And why does he recommend this then? Soundproofing?

Or rather, he said that he always uses a 27mm (1 inch) thickness for his constructions... haven’t asked the reason yet... will ask later....