ᐅ Construction Report Single-Family Home €1200 per m²

Created on: 14 Jun 2020 12:05

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.

face2615 Jul 2020 07:36

#133

hegi___ schrieb:

I think he meant the slightly offset door jamb.

Yes, exactly. It was just a joke.

But "slightly offset" is quite flattering.

Lumpi_LE15 Jul 2020 08:02

#134

hegi___ schrieb:

The ground should be filled up all around to the top edge of the base plate. Then you won’t see it anymore.

I would suggest making a sketch to see how it is supposed to look. You need to or should extend the insulation over the blocks – if not, then the insulation will be flush with the gravel/paving? Do you plan to backfill against the blocks? The top edge of the base plate should always be above the ground level. You can still manage this with a plinth that has covered and plastered flashing – anything else will inevitably cause construction damage.

BauIwan15 Jul 2020 13:53

#135

hegi___ schrieb:

The concrete slab was finally poured.

Right afterwards, an animal walked over the fresh concrete, of course inside the garage where the concrete remains exposed.

How thick is the gravel or crushed stone layer under the slab? In some areas, soil is visible, giving the impression that there is no gravel layer beneath the slab.
Was soil excavated for the blinding layer?

Thank you!
Best regards

BauIwan15 Jul 2020 13:57

#136

Lumpi_LE schrieb:

The base is poorly constructed, creating a significant thermal bridge – unfortunately, it’s too late to change it, or is insulation still going to be added to the walls?

Hi,

could you please explain that again in simple terms? What exactly is wrong with the base?

Thanks
Best regards

Lumpi_LE15 Jul 2020 14:47

#137

Wrong might be a bit harsh – it’s better to let the bricks extend beyond the floor slab so that you can insulate flush with the wall.
If you attach the insulation on the outside, then the ground level needs to be 10...20 cm (4...8 inches) above the top edge of the floor slab (rough floor) to be able to cover the insulation with soil.
Due to rain, I would always set the floor slab slightly above the surrounding ground level.

hegi___15 Jul 2020 14:54

#138

BauIwan schrieb:

How thick is the gravel or stone layer beneath the slab? In some areas, the soil is visible, giving the impression that there is no gravel layer under the slab. Was soil excavated for the blinding layer?

Thanks!
Best regards

I believe it is clear from #2 that, unfortunately, there is more than enough gravel under the slab.

I will create a thermal bridge simulation because I am skeptical whether it will make any difference at all.

ᐅ Construction Report Single-Family Home €1200 per m²

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