ᐅ Realistic Price for a Single-Family Home, Possibly Turnkey
Created on: 24 Aug 2012 22:10
A
Ahnungslos
Hello everyone,
Since I've been thinking about building a house for a few months now, I came across this forum. Over the past weeks, especially here in this forum, I have read up a bit on the topic, but since I was (and still am) completely “Ahnungslos” (clueless), it’s not that easy. It’s almost frustrating before you even know what all the abbreviations mean.
As I have very little knowledge about house building and there are only a few tradespeople in my family, my girlfriend and I have decided that we want to build a prefabricated house.
After several discussions, we have now received a detailed offer from a provider. Since I don’t know if I’m allowed to name the provider, I’ll leave out the name for now, although I would, of course, be interested to hear if anyone has experience with them.
Here are some key details about our planned single-family house in Bavaria:
KfW 55 standard with controlled residential ventilation (Zehnder Comfoair 350) & air-to-air heat pump (Vitocal 200-S)
Usable floor area: approx. 180m² (1,938 sq ft)
Living area: approx. 160m² (1,722 sq ft)
Roof pitch 42° / knee wall 1.10m (3.6 ft)
Braas roof tiles, Roto roof windows, Schüco windows, etc.
A turn-key house (excluding the foundation slab) would cost us about 290,000 EUR (~$),
If we subtract various DIY contributions, the price is around 250,000 EUR (~$), but material costs would then have to be added again.
Additionally, the foundation slab costs about 30,000 EUR (~$) and the carport with garage about 13,000 EUR (~$).
What do you think? Is this a reasonable price, or is it too expensive?
I would appreciate your assessment.
Since I've been thinking about building a house for a few months now, I came across this forum. Over the past weeks, especially here in this forum, I have read up a bit on the topic, but since I was (and still am) completely “Ahnungslos” (clueless), it’s not that easy. It’s almost frustrating before you even know what all the abbreviations mean.
As I have very little knowledge about house building and there are only a few tradespeople in my family, my girlfriend and I have decided that we want to build a prefabricated house.
After several discussions, we have now received a detailed offer from a provider. Since I don’t know if I’m allowed to name the provider, I’ll leave out the name for now, although I would, of course, be interested to hear if anyone has experience with them.
Here are some key details about our planned single-family house in Bavaria:
KfW 55 standard with controlled residential ventilation (Zehnder Comfoair 350) & air-to-air heat pump (Vitocal 200-S)
Usable floor area: approx. 180m² (1,938 sq ft)
Living area: approx. 160m² (1,722 sq ft)
Roof pitch 42° / knee wall 1.10m (3.6 ft)
Braas roof tiles, Roto roof windows, Schüco windows, etc.
A turn-key house (excluding the foundation slab) would cost us about 290,000 EUR (~$),
If we subtract various DIY contributions, the price is around 250,000 EUR (~$), but material costs would then have to be added again.
Additionally, the foundation slab costs about 30,000 EUR (~$) and the carport with garage about 13,000 EUR (~$).
What do you think? Is this a reasonable price, or is it too expensive?
I would appreciate your assessment.
H
Häuslebauer4030 Aug 2012 11:31E.Curb schrieb:
That is basically not wrong. Energy saving must be economically viable and should not be forced at all costs.
However, I consider airtightness of the building envelope necessary and correct, not only in terms of energy savings but also from a building physics perspective.
RegardsI’m not looking for free advice now, as I’m long finished building,
but I would be interested in how airtightness relates to building physics. A rough explanation, of course, and as I said, purely out of interest.
Häuslebauer40 schrieb:
I’m not looking for free advice, as my construction is long finished, but I am interested in understanding how airtightness relates to building physics. A basic explanation, of course, and purely out of curiosity.In very simple terms, it mainly concerns moisture protection. Warm, humid air can enter an unprotected structure, cool down, and condense. This leads to mold growth and reduces the effectiveness of insulation. Air leaks can also diminish the thermal performance of insulation. That is why, with an airtight building envelope, it is essential to ensure controlled ventilation. When the air is saturated with water vapor, this excess moisture has to be directed somewhere. The coldest areas, where condensation occurs, are typically thermal bridges.
H
Häuslebauer4030 Aug 2012 14:28Ok, thank you. I am aware of the concept of controlled ventilation. But wouldn't it be more sensible to build houses a little less airtight from the start to prevent mold growth (assuming you sometimes forget to ventilate when there is no controlled mechanical ventilation)?
Häuslebauer40 schrieb:
Ok, thank you. I’m aware of controlled ventilation. But wouldn’t it be more sensible to build houses slightly less airtight from the start to prevent mold growth (assuming someone forgets to ventilate when there is no controlled ventilation system)?That would cause uncontrolled heat loss again. You could, of course, remove the window seals, but that doesn’t really make sense, does it?
Also, these areas would cool down faster and become thermal bridges, which nobody wants either.
H
Häuslebauer4030 Aug 2012 15:39I can see, it is quite a dilemma...