ᐅ New construction of a two-family house with a separate apartment

Created on: 14 Jan 2015 09:03
C
charlypoll
We are planning to build a two-family house with a possible granny flat and a basement (watertight concrete shell) due to the proximity to the Rhine River in a new development area in Cologne.
Key data are a 7 m (23 ft) eaves height, which corresponds to two full floors, with a roof pitch of 40 degrees. The buildable area is 12 x 12 m (39 x 39 ft), on a plot of 570 sqm (18 x 31.5 m / 61 x 103 ft).
The ground floor is intended for the older generation, with 3-4 rooms, kitchen, hallway, and bathroom.
The upper floor is for 2 adults and 2 children, so it includes 2 children's rooms.
The attic or basement is planned to contain a small apartment for 1-2 people.
We are looking for ideas regarding the possible floor plan, construction companies, architects, and experiences with prefabricated house providers. Planned start is around the end of 2016. Any tips are greatly appreciated.
C
charlypoll
14 Jan 2015 11:18
Is there any guideline on the cost per square meter or per cubic meter of enclosed space?
But building without a basement—I don’t even want to think about it.
Of course, I plan to do some things myself, like flooring and painting, but that doesn’t help much.
Or more specifically, what do you think is a realistic price to expect?
C
charlypoll
14 Jan 2015 11:24
Yes, we don’t have to use the entire building plot.
11 x 11 m (36 x 36 ft) or something similar would also be sufficient, but would it be significantly cheaper?
B
Bauexperte
14 Jan 2015 11:26
Hello,

charlypoll schrieb:
Yes, 3 residential units are permitted, no requirements regarding sound insulation.
Budget (pure construction and additional costs) approx. 250,000 €.
This must be a test question or an early April Fools’ joke....?
charlypoll schrieb:

Property transfer tax does not have to be paid.
Why not?

Regards, Bauexperte
C
charlypoll
14 Jan 2015 11:30
Due to a possibly insufficient budget.
B
Bauherren2014
14 Jan 2015 11:33
You can probably leave out the "possibly."
I’m afraid you’ll be shocked when the building expert lists what the whole thing will roughly cost you.
C
charlypoll
14 Jan 2015 11:34
Yes, okay, we could manage 300,000 as well.