Additional positions in house construction: are they useful and reasonably priced?

2022-11-06 11:52:31

13. Installation of all switch boxes in a deeper design for retrofitting smart home on a radio basis as own work Additional cost: €560.00

Is this actually the only encouragement in the electrical trade? As a rule, the descriptions of the construction services are at the lower limit of the normal range of equipment. For example, few sockets, no network, ...

2022-11-06 11:56:44

Is this actually the only encouragement in the electrical trade? As a rule, the construction service descriptions are at the lower limit of the normal scope of equipment. For example, few sockets, no network, …

No. This is just what we would already agree on with the general contractor.

There is actually quite a lot included (e.g. about 50 sockets) but to a certain extent we still have to upgrade the electrical work a bit. For example, more sockets, spots, lights with motion detectors on the stair steps, spots in the eaves, etc.

But we wanted to upgrade that directly with the specialist trade and not through the general contractor.

2022-11-06 12:00:17

Notes: 1. 17,300€ sounds cheap for a central ventilation system 2. I lived for 7 years in a KFW70% house without ventilation and that thing was an unpleasant sauna concerning humidity (and we really ventilated a lot). We always had moisture on the windows and over time also mold stains. I would never do without it. 3. When is the start of construction? Can you really achieve the Building Energy Act 2023 standard without residential ventilation with heat recovery? No one warned us about the amendment just to be on the safe side...

Is 17,300€ really cheap for a central ventilation system? It's about a Zehnder system. To me, with 162m2 living space without a basement, it really seems expensive... The start of construction is March 2023. Unfortunately, we are not receiving any subsidies. The tiny thing we have to achieve is energy efficiency class A, because we got a interest deduction on financing for that.

2022-11-06 12:03:53

Which trade is actually responsible for the decentralized and centralized ventilation system? If applicable, I might save money and not commission the system through the main contractor but directly through the trade... then I would certainly save 20% surcharge from the main contractor.

2022-11-06 14:49:55

Is €17,300 really cheap for a central ventilation system? It's about a Zehnder system. For me, it seems really expensive for 162m2 of living space without a basement...

We have the same size also without a basement. In the construction specification, there is a central exhaust system with supply air via window frame ventilators. The surcharge for a central controlled residential ventilation would have been €21,000. We then decided against it. On the one hand because it was too expensive for us and on the other hand because I did not trust the planners involved to implement the system sensibly. But ventilation is included anyway.

2022-11-06 16:27:23

Which trade is actually responsible for the decentralized and centralized ventilation system? Maybe I can save money and not order the system through the general contractor but directly through the trade... then I would certainly save 20% surcharge from the GC

I wouldn't do that because it leads to dependencies in different trades. It has to be properly planned and coordinated and is not something to just "quickly do on the side." If the centralized is too expensive for you, then just take the decentralized. Although the latter can also be retrofitted, it is significantly less effort to build in ventilation bricks instead of core drilling, and if the electrician lays the cables right away. Honestly, I wouldn't take something without heat recovery, better save on the spots instead.

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Additional positions in house construction: are they useful and reasonably priced?

hanse987

DominicHannove

DominicHannove

DominicHannove

Pacmansh

WilderSueden