ᐅ Construction Report Single-Family Home €1200 per m²

Created on: 14 Jun 2020 12:05
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hegi___
Hello everyone,

This is the construction report following an earlier thread on floor plan design.

Planned are:
618 m² (6650 sq ft) plot of land
150 m² (1615 sq ft) living space
50 m² (540 sq ft) double garage
Air-to-water heat pump with underfloor and wall heating
Zehnder ventilation system
Exterior blinds in the living room, kitchen, and gallery. Windows anthracite on both inside and outside
Smart home wireless Homematic IP
Planned budget: €300,000 including land and ancillary costs + €30,000 reserve
Plus €12,500 net for a 9.6 kWp photovoltaic system financed separately

Only small regional companies recommended by other builders are being considered.

So far, the following trades have been contracted:

Earthworks: €20,000
Shell construction: €73,000 + €1,000 for the porch above the front door, Wienerberger Poroton T9
Roof: €19,000 + €1,500 scaffolding
Electrical work: €11,000 excluding chiseling work
Window materials: 17 Salamander triple-glazed units + Beck & Heun roller shutters + 5 Selt exterior blinds = €16,000

Quotes received for:
Plastering without decorative finish: €21,000
Bathroom ceramics Villeroy & Boch: €3,000 from Reuter Bathroom Shop
Interior doors Herholz: €2,600
Hörmann front door + garage door: €3,000
Building services materials from the internet: €10,000
Zehnder ventilation unit ComfoAir Q350 TR enthalpy heat exchanger including materials: €4,000 from Selfio
Nobilia kitchen furniture: €5,500, Bosch Series 4 kitchen appliances from Für Uns Shop with 50% discount for €3,500

Modern white villa with dark pitched roof, carport, two cars and front garden.

3D visualization of a modern white house with grey roof, garden and driveway.


Floor plan of a house with kitchen, office, hallway and WC as well as color-coded wiring.


Floor plan of a house with bedroom, child 1, child 2, dressing room, hallway, bathroom and stairs.


Architectural plan: two-story house with floor plans, sections and elevations.


Architectural plan of a house with front, rear, north and south views including measurements.


Construction cost breakdown with land, interim and building costs as well as own work.
T
Tassimat
1 Sep 2020 10:40
hegi___ schrieb:

However, the joy over the savings still outweighs the delay.


The calculation is fairly straightforward: costs for a rental apartment, standby interest, mortgage, insurance, etc. multiplied by the time, compared to the cost savings. Usually, the calculation is still positive, unless you head straight into winter and face a long construction halt.
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hegi___
1 Sep 2020 14:06
That is exactly what I meant by that.
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hegi___
3 Sep 2020 17:29
Foolishly, I mixed up the length and width when ordering the trapezoidal metal sheets. Fortunately, the sheets still reach up to the second beam.

Metal corrugated roof on steel beams over a construction area.
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Osnabruecker
3 Sep 2020 20:46
And how is the drainage planned, or will there be any additional layers on top?

Why did you use steel beams? Wouldn't wood have been more cost-effective?
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Zaba12
3 Sep 2020 20:49
hegi___ schrieb:

Foolishly, I mixed up length and width when ordering the trapezoidal sheets. Fortunately, the sheets still reach up to the second beam.

Why no sandwich panel? Without one, it will turn into a dripping cave during autumn, winter, and spring.
H
hegi___
3 Sep 2020 21:16
Osnabruecker schrieb:

And how is the drainage planned, or will there be something added on top?

Why did you use steel beams? Wouldn't wood have been cheaper?
Zaba12 schrieb:

Why no sandwich panels? Without them, it will become a drip cave in autumn, winter, and spring.


The drainage is internal. There will be 40mm (1.6 inches) of insulation on top of the trapezoidal sheet metal.
I specifically wanted an internal roof with a parapet. I wouldn’t have been able to seal sandwich panels internally, and due to the span, they wouldn’t have fit.

Because of the garage door opener and the 3m (9.8 feet) maximum height limit due to the boundary building regulations, the span would not have worked with wood according to the structural engineer.