ᐅ Floor Plan for a Single-Family Home – Nothing Out of the Ordinary?

Created on: 14 Oct 2015 18:57
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NullVier
Based on this thread, I would like to present our floor plan draft.

I created it myself using free software. It has not been reviewed by an architect nor is it a final version. I just want to show the layout we desire, and we are open to suggestions for changes at any time. In the original thread, the question was raised whether our ideas are difficult to implement or not profitable enough for a potential construction company.

Development plan / restrictions
Plot size: 820m² (8,837 sq ft)
Slope: very slight incline
Floor area ratio: 0.4
Number of stories: 1.5
Roof type: Roof pitch of 25° - 45°
Maximum heights / limits: Eaves height max. 4.5m (15 ft) above the highest point of the building site

Client requirements
Style, roof type, building type: Timber frame construction with gabled roof
Basement, floors: No basement, 1.5 floors
Number of occupants, age: 2 adults, 1-2 children
Room requirements on ground floor: Kitchen, living room, utility room, WC, pantry
Room requirements on upper floor: Master bedroom, children’s room, guest/office room, bathroom
Office: For family use
Open kitchen: No
Number of dining seats: 6-8
Carport
Vegetable garden
Other wishes: We want to keep the total area around 130m² (1,399 sq ft)

House design
Who planned it: Ourselves
What we like most: the large living room, separate pantry
Preferred heating technology: Heat pump

If you have to give up something, which details / extensions would you forego: closed kitchen

Attachments:

- First draft with bay window and angled walls.
- Current version without angled walls and bay window.

The rooms on the upper floor will naturally have sloping ceilings, so the square footage there may change.

2D floor plan of a house with multiple rooms, doors and size indications in m²


Detailed floor plan of a house with several rooms, doors and measurements.


Two-dimensional house floor plan with several rooms and size indications.


2D house floor plan with five rooms, room sizes in square meters
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NullVier
15 Oct 2015 14:38
Yes, thank you very much. I will keep it in mind for further planning.
B
Bauexperte
15 Oct 2015 15:11
Hello,

I will not comment on the room layout; there are plenty of helpful users here for that 😉 However, I am happy to follow up on my promise of a rough cost estimate.
NullVier schrieb:

Slope: very gentle slope
What exactly does that mean?

I am trying to estimate your posted floor plan—even though I lack precise measurements—assuming a solid construction and the given parameters. Hopefully, this will give you a useful reference.
NullVier schrieb:

No basement, 1.5 floors
Carport
Additional wishes: we would like to have about 130 m² (1400 sq ft)
Heat pump
I assume a floor plan of 9.20 x 11.50 m (including bay window) / 10.00 m without bay window, roof pitch 38°, knee wall 1.00 m (3.3 ft), resulting in approximately 135 sqm (1450 sq ft) of living space.

Single-family house, energy standard KfW 70 including an air-to-water heat pump and mid-range finishes: approx. 203,000 EUR
Painting/flooring included in construction price: approx. 20,000 EUR
Exterior work included in construction price: approx. 10,000 EUR (only essentials)
Additional construction-related costs: approx. 30,000 EUR (plot-related extra costs have already been paid)
Carport 3.00 x 6.00 m (10 x 20 ft) plus utility room 3.00 x 3.00 m (10 x 10 ft): approx. 8,900 EUR
Reserve for extras: approx. 10,000 EUR

This results in a total of approximately 281,900 EUR under “normal” soil conditions.

It now depends on how steep the slope of the property is and what additional foundation costs might arise from the soil survey.

Best regards,
Bauexperte
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NullVier
15 Oct 2015 16:19
Bauexperte schrieb:
Single-family house, KfW 70 including air-to-water heat pump and mid-range fittings: 203,000 EUR

Thank you very much for this as well. We have also planned around 190,000 to 200,000 EUR for the house. We intend to add the carport and storage room at a later stage.
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NullVier
16 Oct 2015 07:16
Bauexperte schrieb:


The total comes to approximately EUR 281,900 for "normal" soil conditions.

Now, it depends on how sloped the plot is and what additional foundation costs might arise from the soil survey.

Regards, Bauexperte

From the neighbors, we know that the soil is not the best. What would be the worst-case additional costs for a house like this without a basement, due to unfavorable soil conditions? Or is that something that cannot really be estimated? We had considered having a soil survey done in advance. But I read that the samples are taken exactly where the house will later be located on the property, so the survey should only be done once the planning is fairly complete in this regard.
Uwe8216 Oct 2015 12:06
I’m not an expert, but we have now completed the shell construction. Our house is located on a slope with only clay underneath, which isn’t exactly ideal.

We had a soil report done beforehand, and after that, the ground settled somewhat: The expert recommended soil replacement down to 80cm (31.5 inches) below the foundation base, followed by refilling. Then the building authority also intervened, temporarily shutting down several construction sites in the area because they had cut their slopes too steeply — risk of landslides. This potentially meant using a Berliner retaining wall system.

In the end, however, things turned out quite differently: The expert inspected the excavation pit, and it turned out that only the frost protection edge needed reinforcement, and soil replacement was not necessary. Fortunately, we were able to prove the stability of the retaining structure with a laboratory test just 4 days before the basement construction.

As you can see, anything can happen. It’s better to have an extra budget of 10,000–20,000 euros (about $11,000–22,000) for additional construction costs ready than to have to finance more later. And if you don’t end up needing it, you’ll surely find a way to use the money—if nothing else, an early loan repayment 😉 Wasn’t there a funny thread a few months ago where someone asked what people would do with leftover money from their house build? 😉
Uwe8216 Oct 2015 13:30
Uwe82 schrieb:
And fortunately, we were able to prove the safety of the shoring with a laboratory test just 4 days before the basement construction

Of course, we didn’t have the shoring tested, but the 65° (65°) slope 😉