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.
H
hegi___
20 Jun 2020 14:18
11ant schrieb:

Hallways cleared. But is the exhaust air from the living room (and all bedrooms) supposed to be removed only through the door gaps?

That’s exactly how it’s done. However, the living room is ventilated through the kitchen.

For soundproofing reasons, I will mill out the door frames in all rooms instead of relying on air flowing over the door gaps.


White glass sliding door frame with long horizontal handle, close-up.


Current status of shell construction and drainage work:
Construction site in the garden: wooden forms, red pipe, wood pile, gravel ground, house on the left, trees on the right.
S
Snowy36
20 Jun 2020 22:59
T_im_Norden schrieb:

Yep, that's normal
So, we have either supply air or exhaust air in every room... there isn’t a single room without any ventilation...
H
hegi___
21 Jun 2020 09:16
Snowy36 schrieb:

So, we have either supply air or exhaust air in every room... there isn’t a single room without any ventilation...

You can do it that way, but it’s not mandatory.

I’m still considering how to improve sound insulation between the child’s room and the bedroom. Currently, there is only an 11.5cm (4.5 inches) lightweight concrete block. Does anyone have suggestions? A drywall partition with an air gap, acoustic insulation wool, and gypsum board? A 24cm (9.5 inches) lightweight concrete block? Two layers of 11.5cm (4.5 inches) blocks with an air gap or mineral wool in between?

Floor plan of a residential house: bedroom, dressing room, hallway, and child’s room 1 with dimensions.
T
T_im_Norden
21 Jun 2020 09:35
Snowy36 schrieb:

So, we have either supply air or exhaust air in every room... there isn’t a single room without ventilation...

This referred to the air transfer.
You can include the hallway, but it’s not mandatory.
tomtom7921 Jun 2020 09:48
hegi___ schrieb:

You can do it, but it’s not necessary.

I’m still considering improving the sound insulation between the children’s room and the bedroom. Currently, it’s just an 11.5cm (4.5 inches) lightweight concrete block. Does anyone have any suggestions? A stud wall with an air gap, acoustic insulation, and drywall? A 24cm (9.5 inches) lightweight concrete block? Two layers of 11.5cm (4.5 inches) blocks with an air gap or insulation in between?
17cm (6.7 inches) sand-lime brick wall
H
hegi___
21 Jun 2020 10:02
So, both aerated concrete and calcium silicate bricks have the same sound insulation value of 11.5 ~ 52 dB.
Mixed masonry of Poroton and calcium silicate bricks is, I believe, not very ideal.