ᐅ Modern Bauhaus-style house, extensive use of glass, 170 sqm on ground floor and upper floor, currently in Phase 3

Hello dear building community,

we plan to start building our dream home in spring. The plot has already been purchased. A small single-family house including a basement from the 1930s was also demolished. Utility connections are ready.

We greatly welcome your opinions and suggestions!

Thank you very much!



Plot approx. 1100 sqm (11,840 sq ft)
North-south orientation
Rectangular, width approx. 25 m (82 ft)
Development according to §34, infill development
Surrounding buildings mostly with pitched roofs


My design parameters for the architect

Style: Bauhaus, cubic
Architecture: Ground floor and upper floor visually separated, attached/integrated garage with small utility/storage room
Simple, timeless, functional, and open layout on the ground floor
Generous glazing facing the garden, upper floor with 3 children’s bedrooms, bathroom
Roof type: Flat roof
Open transparent staircase, straight
Outdoor area for garden use, outdoor pool

We are now in design phase 3 and this is the current status:

170.86 m² (1,839 sq ft) living space ground floor/upper floor
39.47 m² (425 sq ft) usable area ground floor
938.27 m³ (33,137 cubic ft) gross volume

Exterior walls made of Poroton XP9, 36.5 cm (14 in)
Garage facade cladding in Resopal
Roof plumbing in aluminum, gutters, downspouts, flashings, wind boards, connections
Fine stoneware tiles, 100/100 cm (39/39 inches), throughout ground and upper floors
Wood-aluminum windows / patio doors, triple-glazed
Soltis / screen sunshade system, electrically operated
Insulated flat roof covering
Underfloor heating system
Central heating with heat pump
Geothermal energy use via deep borehole probe
Photovoltaic system on the roof as retrofit
Cooling for summer, possibly mechanical ventilation with heat recovery

Target KfW 55, preferably KfW 40

Cost calculation

Trade	Gross
Waterproofing works	€8,444
Construction site cleaning	€655
Construction site facilities	€5,950
Concrete works	€78,289
Roofing	€36,265
Electrical installations	€19,064
Drainage sewer works	€7,811
Earthworks	€14,691
Screed works	€5,861
Facade cladding	€18,564
Windows, exterior doors	€51,836
Tiling and slab works	€36,450
Garage door	€5,355
Building automation	–
Scaffolding works	€5,998
Heating	€52,360
Interior doors	€8,003
Ventilation	–
Masonry works	€99,200
Planning	€92,397
Sanitary installations	€20,944
Sun protection	€17,077
Wallpapering	€4,834
Drywall works	€2,695
Total amount	€592,742

Having an office in the hallway is the biggest distraction during video conferences.
How many people are there with you?

By "design phase 3," do you mean service phase 3 according to the HOAI, so that you are already at the stage before the building permit/planning permission?

Lote1971 schrieb:

Style: Bauhaus, cubic

It couldn’t be worse. Why so aggressive? Considering the surroundings, in my opinion, this already crosses the line from provocation to physical attack. The upper floor overhang looks like a poor attempt at an homage to the Cologne harbor.

Just a minor detail question on the side: are those parallel tilt-and-slide doors shown as terrace doors?

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

Planning such a bulky building in an established neighborhood is likely to be rejected by the building authorities, as it does not fit the area.

What did you all eat today, by the way? The "block" definitely enhances the neighborhood, at least from what I can see in the surroundings!

Two spontaneous thoughts:

We didn’t find the unfilled 36.5 Poroton blocks very good... we prefer filled ones, no matter with what... otherwise, sound transmits quite a lot between floors.

Also, I think the construction costs are estimated too low... interior doors and windows are priced too cheaply. Do you have concrete quotes for these and also for the Resopal cladding?