ᐅ Single-family house – floor plan and cost estimates for construction?
Created on: 27 Aug 2013 22:41
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-Nelli-Hello everyone,
My husband and I are considering starting the house building process within the next one to two years. Today, we had a consultation regarding a government-subsidized home savings plan (Wohnriester) and briefly discussed our financial possibilities. We already have an idea for a floor plan tailored to our desired plot of land. Here are some key details:
Plot: approx. 1170 sqm (40€/sqm plus development costs), flat
Building area: approx. 30 x 25 m (about 98 x 82 ft), so plenty of space
Requirements: knee wall (Drempel) 75 cm (30 inches), one full story, roof pitch 35 - 48° (only gable roof)
Other: access to the road from the southwest via a turning area; there is possibly an option to create a small driveway on the southeast side; meadow (arable land) to the east; kindergarten adjacent to the north
House:
- no basement (cost reasons, storage space in the attic)
- heating system undecided (preferably controlled ventilation with heat recovery plus underfloor heating in the bathroom and dining room)
- two adults and two children (one child already, one planned)
- it is not yet decided whether the house will be built with masonry or timber frame construction
- double garage planned with terrace, garages will also have gable roofs
- KfW 55 energy standard
We would appreciate suggestions, critiques, ideas, and maybe someone can give us a rough estimate of the price range we might expect for this floor plan.
Many thanks in advance.
My husband and I are considering starting the house building process within the next one to two years. Today, we had a consultation regarding a government-subsidized home savings plan (Wohnriester) and briefly discussed our financial possibilities. We already have an idea for a floor plan tailored to our desired plot of land. Here are some key details:
Plot: approx. 1170 sqm (40€/sqm plus development costs), flat
Building area: approx. 30 x 25 m (about 98 x 82 ft), so plenty of space
Requirements: knee wall (Drempel) 75 cm (30 inches), one full story, roof pitch 35 - 48° (only gable roof)
Other: access to the road from the southwest via a turning area; there is possibly an option to create a small driveway on the southeast side; meadow (arable land) to the east; kindergarten adjacent to the north
House:
- no basement (cost reasons, storage space in the attic)
- heating system undecided (preferably controlled ventilation with heat recovery plus underfloor heating in the bathroom and dining room)
- two adults and two children (one child already, one planned)
- it is not yet decided whether the house will be built with masonry or timber frame construction
- double garage planned with terrace, garages will also have gable roofs
- KfW 55 energy standard
We would appreciate suggestions, critiques, ideas, and maybe someone can give us a rough estimate of the price range we might expect for this floor plan.
Many thanks in advance.
The windows in the gables appear visually too close to the roof. Based on my experience with our own planning and shell construction, they are also structurally not feasible as shown, since beams above the windows are needed to support the roof. However, I am not entirely sure about this.
I find the two rooms near the staircase poorly designed (no properly usable living space due to leftover areas).
There is a lot of hallway space upstairs.
Why do you need a roof terrace if you already have a large garden?
The roof terrace also consumes a significant portion of the budget.
If you place the staircase where the pantry/storage room is, you would probably gain more space (walls help to divide). However, you would then have to give up the roof terrace access from the hallway, as it would only be accessible from the master bedroom.
I find the two rooms near the staircase poorly designed (no properly usable living space due to leftover areas).
There is a lot of hallway space upstairs.
Why do you need a roof terrace if you already have a large garden?
The roof terrace also consumes a significant portion of the budget.
If you place the staircase where the pantry/storage room is, you would probably gain more space (walls help to divide). However, you would then have to give up the roof terrace access from the hallway, as it would only be accessible from the master bedroom.
B
Bauexperte28 Aug 2013 11:25Hello,
Approximate costs for a solidly built single-family house, medium standard quality:
Plot: €46,800
House as KfW 70 efficiency house, brick veneer: €246,000
Shell-ready attic floor: €6,000
Additional cost for KfW 55: approx. €25,000–30,000 plus “x” depending on plot location and soil conditions
Double garage as masonry garage: €23,000
Extra cost for walkable garage: €8,000
Typical additional construction costs: €35,000–40,000
Painting work included in contract price: €10,000
Floor coverings included in contract price: €10,000
Outdoor facilities included in contract price: €10,000
Contingency for extras: €10,000
Total approx.: €439,800 without possible additional foundation costs.
Best regards, Bauexperte
-Nelli- schrieb:Just as a thought – if your financial means allow, I wouldn’t postpone building your new house too far. Not because of the low interest rates – for me, that is not a sufficient reason – but rather because of the upcoming energy saving regulations. If you plan to include KfW funding in your financing, the current benchmark is still the 2009 Energy Saving Ordinance; by 01/01/14 at the latest (if it takes that long), the amended 2014 Energy Saving Ordinance will be the basis for applying for KfW funding. This means you will need to plan for about 30% more insulation and thus higher costs for the new build.
My husband and I would probably like to start the house building process within the next one to two years. We had a consultation today regarding residential pension schemes and also briefly discussed our financial possibilities.
-Nelli- schrieb:If your attached floor plans are roughly to scale, you are planning a building footprint of 11.00 x 9.00 m on a concrete slab, brick clad as a KfW 55 efficiency house plus walkable double garage.
We already have an idea for a floor plan tailored to our preferred plot. Here are some key details:
Plot: approximately 1170 m² (40€/m² plus development costs), flat
Building area: approx. 30 x 25 m (so plenty of space)
Requirements: knee wall 75 cm (30 inches), one full story, roof pitch 35° - 48° (only gable roof)
Other: access to the street on the southwest side via a turning area, but there may be an option to create a small driveway on the southeast, meadow (arable land) to the east, kindergarten borders the north
House:
- no basement (cost reasons, storage space in attic)
- heating not yet decided (preferably controlled ventilation with heat recovery plus underfloor heating in bathroom and dining room)
- two adults and two children (one already born, one planned)
- undecided whether the house will be built as solid construction or timber frame
- double garage planned with terrace, as garages will also have gable roofs
- KfW 55 standard
... and maybe someone can give us a ballpark figure of the approximate cost for this floor plan.
Approximate costs for a solidly built single-family house, medium standard quality:
Plot: €46,800
House as KfW 70 efficiency house, brick veneer: €246,000
Shell-ready attic floor: €6,000
Additional cost for KfW 55: approx. €25,000–30,000 plus “x” depending on plot location and soil conditions
Double garage as masonry garage: €23,000
Extra cost for walkable garage: €8,000
Typical additional construction costs: €35,000–40,000
Painting work included in contract price: €10,000
Floor coverings included in contract price: €10,000
Outdoor facilities included in contract price: €10,000
Contingency for extras: €10,000
Total approx.: €439,800 without possible additional foundation costs.
Best regards, Bauexperte
Hello Nelli,
just a few points I noticed:
You are planning a knee wall of 75 cm (30 inches). Check where your 2 m (6 ft 7 in) height line runs. With the current sketch, there is a real risk of hitting your head when getting in and out of the bathtub and possibly at the beds.
Also, I was wondering why the software only offers double windows as an option. Double windows are planned everywhere – even in the small storage room. Natural light is great, but here I question the cost-benefit ratio. If you run into budget issues, I would reconsider the window selection (e.g., double windows in the storage room, dining room, and possibly the stairwell - these are the first things that stand out).
Like ypg, I find the office and the children’s room quite oddly shaped.
With a 75 cm (30 inches) knee wall, dormer windows make sense – but they also add significantly to the cost.
Otherwise, I envy you your plot of land – your building envelope is larger than my entire lot, and I even paid more for mine 😡.
just a few points I noticed:
You are planning a knee wall of 75 cm (30 inches). Check where your 2 m (6 ft 7 in) height line runs. With the current sketch, there is a real risk of hitting your head when getting in and out of the bathtub and possibly at the beds.
Also, I was wondering why the software only offers double windows as an option. Double windows are planned everywhere – even in the small storage room. Natural light is great, but here I question the cost-benefit ratio. If you run into budget issues, I would reconsider the window selection (e.g., double windows in the storage room, dining room, and possibly the stairwell - these are the first things that stand out).
Like ypg, I find the office and the children’s room quite oddly shaped.
With a 75 cm (30 inches) knee wall, dormer windows make sense – but they also add significantly to the cost.
Otherwise, I envy you your plot of land – your building envelope is larger than my entire lot, and I even paid more for mine 😡.
Hello,
First of all, thank you for the quick and constructive replies and the calculations. We have considered your comments carefully and this is what we came up with.
We have changed the windows. On one hand, they are now single-leaf doors, and on the other hand, we pushed the windows at the top inwards by 10cm (4 inches) each. But this is only our sketch; the architect and structural engineer will have the final say (regarding beams, etc.).
The biggest change is the staircase. It will now be an open L-shaped staircase, making the two "cut-off" rooms more usable. We weren't very satisfied with the previous design either, but initially, no better ideas came to mind. Now it’s better, thanks for the suggestions. Hopefully, access under the staircase will be feasible and not feel too cramped...
Regarding the roof terrace; in our building area, only a gable roof is allowed over garages. We hope to find a way around this with the roof terrace. A carport would also be an option, but we’d prefer to have a garage (both of us ride motorcycles).
Thanks for the tip, Bauexperte, about the energy saving regulation. Unfortunately, we won’t be able to start building this year. We only really made that decision two months ago and are still in the first planning phase. Also, I’m currently finishing my studies, and we need two full incomes to afford a reasonable mortgage. So, the earliest start will be spring/summer 2014.
About the knee wall, f-pNo; we currently already live in the same building area (renting), and both houses have the same requirements. As far as I understand, the knee wall here refers to the exterior. We just measured the distance between the floor and the start of the roof slope; in our current apartment, it’s 105cm (41 inches). We want to try to have the same in the new build. That would definitely be a different level of space 😀.
Oh, and regarding the lot size, I’m sure your property is closer to an urban area than ours. We live in a village of 2,500 people and the nearest bigger cities (Osnabrück, Bielefeld, or Minden) are each about 45 minutes away by country road. But we preferred to live more rurally :o.
Well, I hope I didn’t forget anything in my long message.
First of all, thank you for the quick and constructive replies and the calculations. We have considered your comments carefully and this is what we came up with.
We have changed the windows. On one hand, they are now single-leaf doors, and on the other hand, we pushed the windows at the top inwards by 10cm (4 inches) each. But this is only our sketch; the architect and structural engineer will have the final say (regarding beams, etc.).
The biggest change is the staircase. It will now be an open L-shaped staircase, making the two "cut-off" rooms more usable. We weren't very satisfied with the previous design either, but initially, no better ideas came to mind. Now it’s better, thanks for the suggestions. Hopefully, access under the staircase will be feasible and not feel too cramped...
Regarding the roof terrace; in our building area, only a gable roof is allowed over garages. We hope to find a way around this with the roof terrace. A carport would also be an option, but we’d prefer to have a garage (both of us ride motorcycles).
Thanks for the tip, Bauexperte, about the energy saving regulation. Unfortunately, we won’t be able to start building this year. We only really made that decision two months ago and are still in the first planning phase. Also, I’m currently finishing my studies, and we need two full incomes to afford a reasonable mortgage. So, the earliest start will be spring/summer 2014.
About the knee wall, f-pNo; we currently already live in the same building area (renting), and both houses have the same requirements. As far as I understand, the knee wall here refers to the exterior. We just measured the distance between the floor and the start of the roof slope; in our current apartment, it’s 105cm (41 inches). We want to try to have the same in the new build. That would definitely be a different level of space 😀.
Oh, and regarding the lot size, I’m sure your property is closer to an urban area than ours. We live in a village of 2,500 people and the nearest bigger cities (Osnabrück, Bielefeld, or Minden) are each about 45 minutes away by country road. But we preferred to live more rurally :o.
Well, I hope I didn’t forget anything in my long message.
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