ᐅ Build a Single-Family Home to KfW55 or Efficiency House 70 Standards?
Created on: 27 Dec 2019 20:24
S
Sternchen31
Hello everyone,
we hope you can help us a bit. We have purchased a plot of land, the notarization appointment has already taken place, and now we are waiting for the payment deadline. Meanwhile, we are already in contact with several solid construction companies that we have shortlisted and have received two offers so far; the third meeting was today.
So far, it was clear to us that we would build a KfW 55 single-family house (about 125 m² (1350 sq ft) living space on the ground floor and first floor) with a full basement (30 m² (320 sq ft) basement possibly used as living space with underfloor heating), a photovoltaic system, heat pump, and underfloor heating with individual room control.
Today, for the first time, we were asked why we actually want to build to KfW 55 standards. An efficiency house 70 would be around €20,000 - 30,000 cheaper, plus approximately €15,000 for the photovoltaic system. According to this, it would take about 15–20 years for the additional costs of building to KfW 55 with a photovoltaic system to be recovered through energy savings. The subsidies, except for the €5,000 from KfW, are no longer as favorable as they used to be and may not be cost-effective.
We have already received two offers from construction companies where this question about not building to KfW 70 did not come up at all.
We are now a bit confused and would like to exchange some thoughts on this.
Many thanks in advance.
we hope you can help us a bit. We have purchased a plot of land, the notarization appointment has already taken place, and now we are waiting for the payment deadline. Meanwhile, we are already in contact with several solid construction companies that we have shortlisted and have received two offers so far; the third meeting was today.
So far, it was clear to us that we would build a KfW 55 single-family house (about 125 m² (1350 sq ft) living space on the ground floor and first floor) with a full basement (30 m² (320 sq ft) basement possibly used as living space with underfloor heating), a photovoltaic system, heat pump, and underfloor heating with individual room control.
Today, for the first time, we were asked why we actually want to build to KfW 55 standards. An efficiency house 70 would be around €20,000 - 30,000 cheaper, plus approximately €15,000 for the photovoltaic system. According to this, it would take about 15–20 years for the additional costs of building to KfW 55 with a photovoltaic system to be recovered through energy savings. The subsidies, except for the €5,000 from KfW, are no longer as favorable as they used to be and may not be cost-effective.
We have already received two offers from construction companies where this question about not building to KfW 70 did not come up at all.
We are now a bit confused and would like to exchange some thoughts on this.
Many thanks in advance.
michert schrieb:
My experience is rather that the external thermal insulation composite system (ETICS) is cheaper than a monolithic wall construction for the same insulation standard. Whether KfW 55 or 70.I quite doubt that.
Scout schrieb:
Are there also KfW-70 offers with external thermal insulation composite systems (ETICS)? michert schrieb:
Whether KfW 55 or 70. hegi___ schrieb:
I doubt that. I also think that ETICS is not popular just because of saved wall thickness. But the question regarding KfW70 is also obsolete, since KfW70 for new buildings has not been subsidized since the Energy Saving Ordinance became mandatory in 2016.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
11ant schrieb:
I also think that ETICS is not popular solely because it saves wall thickness. But the question regarding KfW70 is also obsolete, since the 2016 Energy Saving Ordinance has made KfW70 no longer eligible for subsidies in new construction.Why is ETICS supposed to be popular in new construction? Monolithic aerated concrete blocks are actually the most cost-effective.hegi___ schrieb:
Why is ETICS popular in new construction?Why exactly is something we can only speculate about – but the assumption that the main beneficiary is the builder’s wallet probably isn’t far off. hegi___ schrieb:
Monolithic aerated concrete blocks are actually the most cost-effective.If that were the case, many builders wouldn’t apply ETICS as carelessly as if they were discount stamps. Just take a look at the floor plans in this forum: how many exterior walls are shown in two colors – a load-bearing inner wall combined with insulation boards of roughly the same total thickness, presented as an “exterior wall.”https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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