ᐅ Preliminary floor plan design for a single-family house of approximately 230 sqm plus a basement

Created on: 24 Aug 2023 09:54
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Vivusorg
Hello,

we are planning a new build and have put our ideas into a floor plan. We would greatly appreciate any suggestions for improvements.

Development Plan / Restrictions
Plot size: 2000m² (21,528 ft²)
Slope approximately 8% (east to west)
Site coverage ratio approximately 110m² (1,184 ft²)
Floor area ratio 3 (including basement)
Building envelope, building line and boundary: sufficient space
Edge development: no
Number of parking spaces: 4
Number of floors: upper floor full storey
Roof shape: -
Architectural style: -
Orientation: see plan
Maximum height/limits: < 300m² (3,229 ft²) footprint / 2 full floors

Client Requirements
Style: modern, gable roof
Basement, floors: basement, ground floor, upper floor
Number of occupants, age: 2 adults, 3 children = 5 persons
Space requirement ground/upper floor: approx. 110/120m² (1,184/1,292 ft²)
Office: family use and home office (2 workrooms)
Occasional guest bedrooms: space for 2 persons (planned in the ground floor workroom)
Open or closed layout: tendency to open, only the kitchen should be separable
Modern construction method
Kitchen island
Number of dining seats: at least 10
Fireplace: no
Music/stereo wall: no
Balcony/roof terrace: possible on all sides, main direction north but also west and in front of the house to the south
Garage/carport: planned on the right in front of the house (starting from the WC to the right, so a covered walkway to the front door is possible)
Utility garden, greenhouse: utility garden located in the north
Other wishes/special features/daily routine, including reasons why some things should or should not be:
Space between children’s room and parents’ room, short walking distances
Street is on the south side

House Design
Who designed the plan: DIY
What do you especially like? Why? The entrance vestibule is important to us. The kitchen should be comfortably large because it will be used a lot (often two adults and children). A double garage is planned next to the front door, starting with the WC (to the right). The hallway will be illuminated during the day by glass doors (ground floor) and hallway/bathroom windows upstairs, as well as a glass door in the workroom.

What do you dislike? Why? Unsure if the entrance vestibule is adequately sized.
Price estimate according to architect/designer: own estimate: 650k EUR
Personal budget limit for the house, including fittings: 700k EUR
Preferred heating system: heat pump (in basement)

If you had to forego certain details or extensions
- what can you give up: floor size
- what can you not do without: kitchen, children’s rooms, storage room, workroom 1, workroom 2, basement

Why is the design the way it is? For example:
A mix of many examples from various magazines...

What is the most important/basic question about the floor plan summarized in 130 characters?
We have created several floor plans. We like this one but are sure many optimizations are possible. We welcome any suggestions or critiques.

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11ant24 Aug 2023 21:41
haydee schrieb:

Why do laypeople think they can take on the job of an architect?
For the same reason that bad Elvis impersonators believe they could also be Freddie Mercury 🙂
haydee schrieb:

Draw your floor plan on paper; millimeter paper is best, but graph paper works too.
Graph paper is clearer and easier to get. And don’t forget: "The upper floor takes priority" ;-)
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Y
ypg
25 Aug 2023 09:07
Vivusorg schrieb:

Slope approximately 8% (east to west)
Site coverage around 110m² (1,184 ft²)
Floor area ratio 3 (including basement)
Building envelope, building line, and boundary: sufficient space

For a sloped site, the site plan should include contour lines. Also, for evaluating a floor plan that is part of a house design, the basement level is definitely missing here.
Vivusorg schrieb:

Floor area ratio 3 (including basement)

A floor area ratio of 3 is possible, but certainly not for a 2,000m² (21,528 ft²) plot designated for single-family housing. I would say this is a misinterpretation.
Vivusorg schrieb:

Does the staircase need more space?

This is the wrong question. Is the staircase well positioned? No, because it creates labyrinth-like corridors.
Vivusorg schrieb:

Are children’s rooms of 16m² (172 ft²) excessive?

16m² (172 ft²) is generally a good size.

In principle, do you want to create 110m² (1,184 ft²) of storage space in the basement?
If so, the budget is probably not sufficient. It doesn’t help to discuss unrealistic plans.
Given this slope and budget, it would be better to keep to a two-story design and make a (large) part of the basement living space. 40m² (430 ft²) is enough for technical rooms, laundry, and storage.
Children’s rooms can benefit from more natural light instead of dark north-facing windows, for example by placing them on the south or southwest side—just a general suggestion.

My advice is to first have a conversation with an architect or general contractor about what the development plan / building permit allows and what the plot can accommodate. It is still too early for a detailed discussion here.
11ant25 Aug 2023 10:32
ypg schrieb:

A floor area ratio of 3 does exist, but certainly not for a 2000 sqm (21,528 sq ft) plot intended for single-family home development.
I would say: that’s a misinterpretation.

However, I suspect the original poster hasn’t even looked at the questionnaire or the zoning plan. I don’t see any relevant restrictions regarding the site coverage ratio or the floor area ratio here (a 2,000 sqm (21,528 sq ft) plot would still allow plenty of space for a king-size double garage even with site coverage of 0.1 and floor area ratio of 0.15), but rather constraints in terms of actual building envelopes, and possibly also the number of storeys or height limits. But what do Germany’s best planning software users care about anyway ;-)
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Y
ypg
25 Aug 2023 11:47
11ant schrieb:

But why should the users of Germany’s Best Planning Software care ;-)

The software used here is the worst available on the market (in my opinion)
11ant25 Aug 2023 11:51
ypg schrieb:

The software used here is the worst available on the market (in my opinion)

"Best" was also meant ironically in reference to the gifted "user."
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Y
ypg
25 Aug 2023 13:29
Vivusorg schrieb:

I’m focusing on the planning

So are we—otherwise we wouldn’t be here in your thread.
The first step in planning—before even the floor plan—is the site plan. In this case, it should include the contour lines (as mentioned repeatedly) and the building envelope.
Vivusorg schrieb:

Yes. You mention a number without explaining exactly how you arrived at it. Please clarify your calculation?

The number wasn’t thrown out randomly. I recommend first gathering basic information about today’s house construction. Since you’re using this forum, you can find relevant information here as well.
The budget is closely linked to the living area. If someone has €400,000 or €1 million available, and everyone has the same room requirements, the latter can plan something larger or more upscale.
It may be true that with Town & Country, for example, you pay less than €3000 per square meter (sqm) living space, but you don’t want to build a house from that low-cost provider.
Vivusorg schrieb:

Can you say what you think is more efficient? That’s exactly what I want to find out here.

Anyone planning rooms in 2D should know how those rooms feel in 3D. At first glance, I see unnecessary corridor space and long walls with windows that are too narrow (whether patio doors or casement windows).
I see a staircase located exactly where the structural system for the pitched roof is.
From the furniture layout, I see a sofa placed not in the living/relaxation area but moved into the dining area. If you move it, it blocks access to the living area.
In the kitchen, if that dining space is even planned, it feels connected to the main dining area, making it less functional.
There is a room separated by the poorly positioned staircase that simply gets a door to the living room.

Above this, there is a child’s bedroom with poor spatial proportions that is also 4 sqm (about 43 sq ft) larger than the smaller child’s room.

I notice the use of high or transom windows… that’s acceptable in row houses where you can’t get natural light any other way.
Vivusorg schrieb:

Style: modern…

I don’t see that at all. The sightlines and more appealing proportions are missing.
Vivusorg schrieb:

Guests per year: space for 2 people (plan: in the study on the ground floor)

The guest sleeping area requires passing through the living room to create a slalom route to the bathroom.
Vivusorg schrieb:

Open or closed architecture (tendency to open, only the kitchen should be separable)

As mentioned above: a large combined dining and living area alone does not constitute open architecture or modern design.
Vivusorg schrieb:

Modern construction method

.
Vivusorg schrieb:

Garage, carport: planned on the right in front of the house (WC starts from there to the right so that a roofed walkway to the front door is possible)

One on the right, one on the left, north and south. It’s best to stick to the cardinal directions when considering orientation.
Vivusorg schrieb:

Short walking distances

Not at all. Only the bedroom is near one bathroom with a shower… this also makes the bedroom a passage room, which is a disadvantage for the residents.
It’s not worthwhile to suggest “improvements” here because basic aspects like slope, basement, and structural design have been completely disregarded, possibly also the minimum window sizes. I’m no longer interested in checking those.