ᐅ 130 m² house, one and a half stories, ratio of usable area to living space
Created on: 2 Jul 2017 17:26
H
Hausbau83
Hello everyone,
we have now agreed on the general design of our house and have already created a floor plan. However, the question arises: how big is the house actually?
One home builder talks about usable floor area, another about living area or built-up area.
In our floor plan, the external dimensions are 9.63 x 9.825 meters (32 x 32 feet). I have subtracted all walls from this floor plan and added that to the living area, so it should be about 130 m² (1,399 sq ft). Is that correct? It seems a bit large to me.
Could someone clarify this for me? It is important to us to have a rough floor plan so that we can also calculate a price.
Thank you
we have now agreed on the general design of our house and have already created a floor plan. However, the question arises: how big is the house actually?
One home builder talks about usable floor area, another about living area or built-up area.
In our floor plan, the external dimensions are 9.63 x 9.825 meters (32 x 32 feet). I have subtracted all walls from this floor plan and added that to the living area, so it should be about 130 m² (1,399 sq ft). Is that correct? It seems a bit large to me.
Could someone clarify this for me? It is important to us to have a rough floor plan so that we can also calculate a price.
Thank you
Lumpi_LE schrieb:
No, the living area still needs to have the sloping roof areas, stairs, and small details deducted.Sloping roof areas and small details aren’t visible anyway, except for major elements like "how to support the ceiling with an oversized clear span."
There are no stairs either, because the depicted structure is not a staircase.
Hausbau83 schrieb:
For us, it is important to have the rough floor plan so that we can estimate a price. The providers don’t need that. They need the living area, not the floor plan. They don’t care where the walls are. By the way, this floor plan gives me a déjà-vu (similar to the one from Ev-Marie86).
Hausbau83 schrieb:
In our floor plan, we have the exterior dimensions of 9.63 x 9.82 m (31.6 x 32.2 ft). I subtracted all walls in this floor plan and added them to the living area, so it should correspond to 130 m² (1400 sq ft). Is that correct? It seems a bit large to me. Methodologically, this kind of result can definitely be expected to be incorrect.
Hausbau83 schrieb:
Now the question arises: How large is the house actually?
One builder talks about usable area, another about living area or built-up area. What the house covers on the plot is the built-up area (building footprint). Walls take up some of that. What remains are living areas, usable areas, and circulation areas. You can find the relevant standards by looking them up online.
In practice, rough rules of thumb will suffice. The term “one-and-a-half-story house” can be taken quite literally. A target size of 130 m² (1400 sq ft) would mean about 87 m² (936 sq ft) per floor when divided by 1.5. Similarly, before deducting wall thickness, you can roughly calculate about 1.25 times that for the footprint. Ultimately, this translates into just under 110 m² (1184 sq ft) of ground area.
9.63 x 9.825 m (31.6 x 32.3 ft) (I won’t even ask where that comes from) is clearly less according to Eva Zwerg. Building on this footprint, a two-story house would reach about 150 m² (1615 sq ft) – but a one-and-a-half-story house rather just over 110 m² (1184 sq ft).
But this is just a factual answer to the question; regarding the qualitative assessment of the “floor plan” – both in terms of planning and as a basis for price inquiries – I fully agree with my predecessors.
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