ᐅ Planning a Single-Family Home for a Family with Three Children and a Basement

Created on: 23 Mar 2021 15:05
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NicoStr
Hello everyone,

I’ve been reading along a lot over the past few days, and now I’d like to get your opinions on possible improvements...

In the next few days, there will be five of us.
I’m 34, self-employed; my partner is 33; the children are 6, 3, and soon a newborn.

We built a house 9 years ago, but back then we never planned for 3 kids, so now we’re bursting at the seams.

We are looking at two plots: one is about 2000sqm (21,528 sq ft) without a building permit / planning permission;
the other is about 1500sqm (16,146 sq ft) with a development plan allowing a ridge height of 9m (30 ft) and a roof eave height of 4m (13 ft), with one full floor.

We want a large open living/dining area and children’s rooms that are not too small. To keep the house from becoming too large, one child’s room will be in the basement, which has a separate entrance and bathroom, just like our current setup, which works well.

The plan is a timber frame construction built to KfW 55 energy efficiency standards, with an air-to-water heat pump and photovoltaic panels so we can benefit from the Renewable Energy Act subsidies. I would also like to install a KNX smart home system, and the basement will be developed as a livable space. We only have overnight guests about 3-4 times a year.

Instead of a carport, we want a double garage with a gable roof. It doesn’t have to be directly attached to the house; I think it could also be placed on the north side.

I have some concerns about the usability of the rooms because of the sloping ceilings. Also, I’m a bit worried the entrance might be somewhat dark.

What are your thoughts on this?

Good luck

Single-family house with wooden carport in front, green lawns and blue sky


Two-story modern house with gray wood cladding, white window frames, carport and garden.


Two-story house with veranda, large windows and garden.


Two-story house with large veranda, carport and green garden.


Two-story house with carport on the left, gray facade, several windows, garden with bushes.


Floor plan of single-family house: kitchen, dining/living area, guest room, hallway, WC/shower, cloakroom, cooking area, garage.


Floor plan of a house: bathroom, bedroom, dressing room, gallery, two children’s rooms, and open space.


Basement floor plan with cellar, bathroom, utility room, child’s room and sewing room.
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NicoStr
23 Mar 2021 18:45
K1300S schrieb:

Is that including everything or just for the house? If it’s the latter, that would probably be one of the few reasonably realistic estimates here.

To be honest, before starting the planning phase, I was expecting a total of around 800,000. But now, as the offers are slowly coming in, it’s becoming clear. Like you described, about 850,000 for the house and between 150,000 and 200,000 for the land.

If I understand correctly, we could get around 60,000 in repayment grants from KfW due to the 55-Energie-Effizienz-Gebäude standard and having two residential units, if I plan a kitchenette in the basement and a door to the stairwell.

I’m also considering covering about 50,000 through sweat equity.

Those are sizable amounts—we were nowhere near this nine years ago. Back then, we built something similar but measuring 8.8m by 9.5m (29 feet by 31 feet), plus a bay window.
K1300S23 Mar 2021 18:48
Yes, cheap is a different matter, but it’s good that you are already looking in the right range, otherwise there would be a nasty surprise later on.
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NicoStr
23 Mar 2021 18:57
That’s true. But is my assumption about KfW correct... Is a dwelling unit defined as having a separate entrance, bathroom, and cooking area? Then it would be covered through the basement.
K1300S23 Mar 2021 18:58
I do think that the KfW definition of a residential unit is quite simplified, but for example, @nordanney can provide more details.
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icandoit
23 Mar 2021 20:08
I was about to say that the upper floor needs to be redesigned. The open space will become an additional room.
Schimi179123 Mar 2021 20:20
NicoStr schrieb:

...

We once saw this in a bathroom showroom. Behind the washbasin, there was a large shower with two showerheads.

Floor plan of a bathroom with bathtub on the left, sink and toilet, as well as a door; size 19.38 m² (208.5 sq ft)