ᐅ Developer Offer for a Single-Family Home – Requesting Your Opinions
Created on: 2 Nov 2011 23:00
B
BauexperteB
Bauexperte2 Nov 2011 23:00Hello,
I consider that an inflated price; it seems more appropriate for a maximum of 110 sqm (1,184 sq ft).
How many centimeters of ETICS? Double glazing is unacceptable, and a colored exterior plaster including leveling coat is also supposed to be included in the offer price?
Too expensive; a walk-in shower costs at most €500.00, the partial wall about €200.00; even for electric roller shutters—unless the price includes a timer control.
How many centimeters of insulation? What thickness in millimeters? A good air-to-water heat pump raises the price by a maximum of €5,000—brands like Ochsner excluded.
I understand that well, but in my opinion this entire calculation is not correct at all.
Kind regards
DebbyK schrieb:
We are planning:
1 single-family house, city villa style with about 135 sqm (plot will be purchased elsewhere, here it’s only about the house)
Price: €158,000.00
I consider that an inflated price; it seems more appropriate for a maximum of 110 sqm (1,184 sq ft).
DebbyK schrieb:
Included services:
- Construction management, architectural planning
- External thermal insulation composite system (ETICS), white textured plaster and separate paint finish
- 17.5 cm (7 inches) aerated concrete masonry
- White Schüco windows, double glazing (5-chamber system) and
insulated glazing with a U-value of 1.1 W/m²K (0.19 Btu/h·ft²·°F)
- Condensing boiler with hot water storage
- Staircase with solid beech wood steps
- Sealed and filled ceiling joints
- Clay roof tiles
- Blower door test
- Construction waste disposal, site operation and setup, scaffolding
- Soil report, inspection by independent tester
How many centimeters of ETICS? Double glazing is unacceptable, and a colored exterior plaster including leveling coat is also supposed to be included in the offer price?
DebbyK schrieb:
Additional special requests:
Roller shutters ground floor + upper floor
Two-tone plastic windows
Walk-in shower with partial wall
Dark-stained beech staircase
= €8,000.00
Too expensive; a walk-in shower costs at most €500.00, the partial wall about €200.00; even for electric roller shutters—unless the price includes a timer control.
DebbyK schrieb:
Upgrade to KfW70 standard through improved external insulation, roof and ceiling insulation on the upper floor, enhanced thermal insulation glazing, and installation of an air-to-water heat pump (brand: ROTEX)
= €15,000.00
How many centimeters of insulation? What thickness in millimeters? A good air-to-water heat pump raises the price by a maximum of €5,000—brands like Ochsner excluded.
DebbyK schrieb:
At special request, we had a monolithic construction (as KfW-70 standard) offered, which would cost an extra €3,800. This would be a 36.5 cm (14 inches) aerated concrete masonry with exterior plaster. We are currently leaning towards this option...
I understand that well, but in my opinion this entire calculation is not correct at all.
Kind regards
Good morning!
First of all, thank you for the quick response!
The external thermal insulation composite system (ETICS) will still be 11.5 cm (4.5 inches) thick, and the leveling coat is included.
But actually, we don’t really want the ETICS. Is an additional 3,800 € justified for the monolithic construction method? I thought that was supposed to be “cheaper” in terms of materials?
Regarding the 8,000 €: the roller shutters alone (for all the floor-to-ceiling, wide windows) are supposed to cost about 5,000 €... They are not electric but have a motorized mechanism to make them easy to lift.
What exactly doesn’t fit—in your opinion, is it too cheap?
First of all, thank you for the quick response!
The external thermal insulation composite system (ETICS) will still be 11.5 cm (4.5 inches) thick, and the leveling coat is included.
But actually, we don’t really want the ETICS. Is an additional 3,800 € justified for the monolithic construction method? I thought that was supposed to be “cheaper” in terms of materials?
Regarding the 8,000 €: the roller shutters alone (for all the floor-to-ceiling, wide windows) are supposed to cost about 5,000 €... They are not electric but have a motorized mechanism to make them easy to lift.
What exactly doesn’t fit—in your opinion, is it too cheap?
B
Bauexperte3 Nov 2011 10:30Hello,
So, 17.5 cm (7 inches) Ytong blocks with 11.5 cm (5 inches) ETICS and colored exterior plaster (around €1,500); the “minor detail” of the implied tiled roof (for a house of this size approximately in the price range of €2,000), results in a rough calculation—with double glazing and without renewable energy systems—in an offer price of €1,170.00 per square meter.
No, in my experience it is not cheaper; the price is roughly the same whether I use a wall structure as described above or solid Ytong blocks 36.5 cm (14 inches) thick. Maximum price difference is within a few hundred euros.
That price is reasonable. Sorry, I overlooked the fact that colored windows were also included in the €8,000 package.
The base price is too low—in that respect, I would suspect that the building specifications are the reason. For a monolithic energy-efficient KfW 70 house of this size (built without ETICS), the turnkey price per square meter is usually in the range of €1,500.00 to €1,600.00, depending on the fittings.
Therefore, this offer price seems realistic only if a large part of the work is done personally. Otherwise, based on practical experience, it is unlikely. Or... if your supplier commits this price contractually, additional costs will arise later, which in total will roughly match the turnkey price I mentioned above. In July this year and again recently in October, prices for individual trades have increased significantly; my estimate is around 8% overall. This means that if you accept this offer, it will likely be adjusted later through additional groundworks or similar to align with market conditions.
Best regards
DebbyK schrieb:
The external thermal insulation composite system (ETICS) should still be 11.5 cm (5 inches) thick, and the leveling coat is included.
So, 17.5 cm (7 inches) Ytong blocks with 11.5 cm (5 inches) ETICS and colored exterior plaster (around €1,500); the “minor detail” of the implied tiled roof (for a house of this size approximately in the price range of €2,000), results in a rough calculation—with double glazing and without renewable energy systems—in an offer price of €1,170.00 per square meter.
DebbyK schrieb:
But actually, we don’t want the ETICS either. Are the €3,800 extra for monolithic construction justified? I thought that would actually be “cheaper” in terms of materials?
No, in my experience it is not cheaper; the price is roughly the same whether I use a wall structure as described above or solid Ytong blocks 36.5 cm (14 inches) thick. Maximum price difference is within a few hundred euros.
DebbyK schrieb:
Regarding the €8,000: The roller shutters alone (for all floor-to-ceiling, wide windows) are supposed to cost around €5,000... They are not electric but have a motorized mechanism so they can be raised easily.
That price is reasonable. Sorry, I overlooked the fact that colored windows were also included in the €8,000 package.
DebbyK schrieb:
What exactly doesn’t fit – do you think it is priced too low?
The base price is too low—in that respect, I would suspect that the building specifications are the reason. For a monolithic energy-efficient KfW 70 house of this size (built without ETICS), the turnkey price per square meter is usually in the range of €1,500.00 to €1,600.00, depending on the fittings.
Therefore, this offer price seems realistic only if a large part of the work is done personally. Otherwise, based on practical experience, it is unlikely. Or... if your supplier commits this price contractually, additional costs will arise later, which in total will roughly match the turnkey price I mentioned above. In July this year and again recently in October, prices for individual trades have increased significantly; my estimate is around 8% overall. This means that if you accept this offer, it will likely be adjusted later through additional groundworks or similar to align with market conditions.
Best regards
Hello!
After spending the last four hours carefully going through the building specifications, I can say that there are definitely still some issues that need clarification.
The earthworks you mentioned also apply to soil classes three to five and do not include the removal of excess soil or the addition of any soil that might be required. Additionally, extra costs are expected for plots that are not level, but no amount has been specified. However, the plot is well known, as it is in a new development where the builder is already constructing other houses.
We will of course address these points further.
Thank you very much for the notice.
We would also be very grateful for any additional comments regarding our planned concept.
Best regards!
After spending the last four hours carefully going through the building specifications, I can say that there are definitely still some issues that need clarification.
The earthworks you mentioned also apply to soil classes three to five and do not include the removal of excess soil or the addition of any soil that might be required. Additionally, extra costs are expected for plots that are not level, but no amount has been specified. However, the plot is well known, as it is in a new development where the builder is already constructing other houses.
We will of course address these points further.
Thank you very much for the notice.
We would also be very grateful for any additional comments regarding our planned concept.
Best regards!
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