ᐅ Floor Plan Design for a Single-Family House, Solid Wood Construction, 140 sqm in Lower Saxony

Created on: 2 Jan 2023 15:30
-
-LotteS-
Hello dear house building forum!

Here are some details—based on our best knowledge and judgment—about our house construction project...

Development Plan/Restrictions

Plot size 576 sqm (approx. 6195 sq ft) - parcel 17/28 (see cadastral map)
Slope no – the plot has only a few centimeters (inches) of elevation difference
Floor area ratio (FAR) 0.3 = 172.8 sqm (1861 sq ft)
Plot ratio not defined
Building envelope, building line and boundary 24x24 meter (79x79 feet) plot = N-E-S-W 16x18x16x18 meter (52x59x52x59 feet) building envelope
Edge development no, exceptions possibly according to Lower Saxony Building Regulations
Required number of parking spaces not specified
Number of floors single storey
Roof shape gable/hip/half-hip with 35-50 degree pitch
Architectural style classic detached house
Ridge direction specified = ridge line running west-east
Max height limits ridge height 4.0 m (13 ft), eaves height 8.5 m (28 ft)
Additional rules no oil heating, 50% of the south-facing roof must have solar panels, no building allowed between house and street (e.g., no parking or similar in front yard)

The plot has been purchased and the utility infrastructure in the new development area is already completed (our plot is even located on a pre-asphalted road).

Homeowner Requirements

Style, roof shape, building type solid wooden house made of massive log beams inside, blown insulation, and exterior cladding
Basement, floors no basement – only ground floor + upper floor
Number of occupants, ages three, aged 36, 29, and five and a half
Space requirements on ground and upper floors standard single-family home with 3 bedrooms plus bathroom upstairs, open-plan living area downstairs, guest WC, and large utility/housekeeping room
Office: family use or home office? One room currently usable as office/guest room (backup for future child needs), currently neither of us have jobs with home office option
Open or closed layout living/dining/kitchen preferably open
Conservative or modern construction style conservative
Open kitchen, kitchen island open kitchen yes, kitchen island currently not planned
Number of dining seats daily use for 3, but dining nook should be sufficient for more people
Fireplace planned is a masonry stove
Music/stereo wall no
Balcony, roof terrace no
Garage, carport carport with workshop
Utility garden, greenhouse no
Other wishes/special features/daily routine, including reasons why some things are included or excluded

House Design

Who designed the plan: plan based on our principles, then optimized with the manufacturer’s in-house architect
What do you particularly like? Why? We really like the extended dining nook with the surrounding bench; overall, our ideas about room sizes have been well implemented – whether everything will really work as we imagine, we would like to ask here.
What do you dislike? Why? The chimney’s position might be bothersome in the children's room? Or is that negligible in daily life? We are still not satisfied with the kitchen and bathroom upstairs and are currently looking for a good furnishing/decorating solution.
Price estimate according to architect/planner: Since we are not working with a general contractor but will handle contracts ourselves after the shell is built and do a lot of work ourselves, we don’t have all numbers yet. The following trades are currently being costed.
Personal price limit for the house including fittings: 400,000 up to move-in ready, excluding everything outside the building itself, plot is paid
Preferred heating technology: heat pump with underfloor heating plus photovoltaics with possible storage

If you have to give up something, which details/extensions

- can you do without: We have tried to adapt our demands to the budget as much as possible – does anyone see further savings potential?
- can you not do without: As an absolute last resort, we would remove the dining nook and redesign the ground floor – also, the masonry stove is fixed for us (we just love this cozy atmosphere).

Why is the design the way it is now?

Standard plan from planner? The manufacturer does not offer standard houses; everything is individually designed
Which of your wishes were implemented by the architect? The current plan reflects our wishes quite well. Now we just need fine-tuning, and we hope for your assessments, ideas, and experiences.
A mix of many examples from various magazines... Of course, our inspirations come from many different sources (good and bad…) 😀
What makes it particularly good or bad in your opinion? It feels good to us so far – all our furniture fits, and the things that bother us in our current rented house have been eliminated in the design.

What is the most important/basic question about the layout, summarized in 130 characters?

- Does the layout work as it is, or are there specific arrangements that don’t work?
- Is the position and number of windows sufficient?
- Do the children's rooms upstairs need two roof windows or is one enough each?
- Have we missed or overlooked anything important?
- Can a U-shaped kitchen be sensibly planned in the existing space, or do we need to adjust walls downstairs first?
- Are the door positions appropriate regarding width, wall distance, and opening direction?
- Is the utility room (unfurnished room behind the laundry on the north/east side of the ground floor) dimensionally adequate?
- What knee wall height is recommended upstairs? Currently at 40 cm (16 in), we plan to raise it because otherwise, especially the upstairs bathroom will be problematic (though we don’t want a large bathroom, just “as big as necessary” – we would probably place the bathtub in the northeast corner of the room – would that fit?
- We’d like to add a laundry chute from the upstairs bathroom to the utility room – does anyone have a good idea for the best location?


One final note on our general concept:
We intend to buy the house from the manufacturer including insulation, cladding, and roof structure. Assembly will follow the “master carpenter assembly” principle (the company provides two experienced workers, plus 4-5 helpers from us – full warranty and savings of around 15,000-20,000 euros, about three to four weeks of hard work). The manufacturer’s “basic package” also includes windows and the front door, as they must be specially installed due to the house settling.
We plan to contract the foundation slab, roofing, and plumbing work separately. Electrical work (in consultation with the local master electrician), interior finishing (room doors, screed, underfloor heating, floor covering), and small tasks can be done by my partner (trained electrician, highly interested in almost everything, skilled and experienced with wood). I work professionally in an office of a building materials supplier, so I have access to good conditions, storage capacity, and established contacts in the industry. We also have great friends and a large family who are all enthusiastic about our project and willing to support us. We know this will require a lot of work, strain our time, nerves, and budget—but we want to give it a try.

We are now looking forward to suggestions, critical comments, and anything that can help us avoid as many mistakes as possible during the process.

Thank you very much in advance!

Detailed site plan of a residential area with planned streets, plots, and green spaces.


Site plan with numbered plots; red circle marks parcel 17/28 at a street.


Floor plan of a residential house with living room, kitchen, dining, hallway, cloakroom, utility room, and carport annex


Floor plan of a residential level with flat-roof carport; bedroom, two children's rooms, hallway, bathroom, stairs.
X
xMisterDx
3 Jan 2023 20:38
In my opinion, an island really stands out only when you have a completely open kitchen area. In that case, the island separates the living and cooking spaces. If the kitchen is a separate room with a passageway—no matter how wide—the island always looks forced rather than natural.

Because of the (narrow) passage, the island no longer serves as a room divider but becomes an obstacle right behind the passage.
-LotteS-3 Jan 2023 20:48
xMisterDx schrieb:

In my opinion, a kitchen island only really works well in a fully open kitchen area. The island then serves to separate the living and cooking spaces. If the kitchen is a separate room with just one passageway, no matter how wide, the island always looks forced and awkward.

Okay, that makes sense. 🙂
We can’t avoid the intersections, but the walls, which are currently planned to be pushed further out, could possibly be shortened where feasible to make the kitchen itself more open. Do you think it’s worth pursuing this idea further? Or would it end up being neither one thing nor the other?
Y
ypg
3 Jan 2023 20:56
-LotteS- schrieb:

Or is a rough hand-drawn sketch enough for now, just to show what we have in mind?
Definitely. In the end, you’ll do yourself a big favor by working more closely with the measurements. Draw, measure, draw, measure…
-LotteS- schrieb:

More than just a small light bulb was planned there for sure.
-LotteS- schrieb:

Regarding the lighting situation, we plan to install relatively closely spaced LED downlights in the ceiling for the general lighting.
-LotteS- schrieb:

Also some wall lights, accompanied by indirect light sources for a cozy atmosphere in the evening.
Artificial light can never replace daylight. Nobody wants to keep switching lights on and off all the time. And it’s not about the hassle of switching, but about being dependent on the fixture up there, whether LED or a bigger bulb. Too much light can also be overwhelming.
And who wants a hallway stub that serves as the route to the guest toilet and is left in darkness? Plus the risk of tripping over a shoe… that’s where a window belongs.
… and you asked about window sizes: at least 10% of the living area is necessary. You have that.
Not a few people have 30%.
-LotteS- schrieb:

The windows are actually more symmetrical than sensible at the moment…
I don’t see any symmetry!
i_b_n_a_n schrieb:

Then I read somewhere that the planning absolutely has to start on the upper floor, meaning I recommend throwing everything out and first carefully questioning and writing down the room program.
Yes, that was suggested by @11ant. I now do the same for terraced/semi-detached houses and staircase problems with sloping roofs – a very helpful tip! 🙂
W
WilderSueden
3 Jan 2023 20:59
-LotteS- schrieb:

How can I determine the exact heights of the individual reference points here, so we don’t have to stay in the dark and can plan precisely?

Try calling your local authority. They should have plans for the development of the building area, and if they set any requirements through the zoning plan / planning permission that depend on these points, they are responsible for providing you with the reference point information.

Regarding the kitchen... yes, you can outsource a lot if you want. It’s not very convenient, though. On a 3m (10 feet) length, you’ll only fit about one meter (3 feet) of a good island. That’s quite small. With a peninsula layout, you can manage 2m (6.5 feet) plus a 1m (3 feet) walkway, but that’s not ideal either. So it’s better to have everything you need directly in the kitchen.
Y
ypg
3 Jan 2023 21:01
Why is everyone talking about an island?
I don’t see any mention of a desire for an island in the original post.
-LotteS- schrieb:

open or closed design living/dining/kitchen area preferably open
conservative or modern construction style conservative
open kitchen, kitchen island open kitchen yes, kitchen island currently not planned
-LotteS- schrieb:

Can we basically (without detailed planning) design a kitchen (U-shaped) in the existing space in a practical way, or do we need to rethink the walls at the bottom first?

If an island is desired, this floor plan is not suitable.
X
xMisterDx
3 Jan 2023 21:12
I am an electrical engineer, not a designer, and I am just sharing my personal impression here 😉

However, I think as long as only the passage becomes wider and the dining/cooking area remains a 3m (10 feet) wide “corridor,” a kitchen island won’t deliver the effect you expect.

But it doesn’t necessarily have to be a kitchen island. Also keep in mind that a U-shaped layout with all cabinets against the wall is usually much more cost-effective than freestanding kitchen cabinets or an island.