ᐅ Floor plan of a semi-detached house, 2.5 stories plus usable basement

Created on: 28 Mar 2022 11:37

Hello everyone,

we are planning to build a semi-detached house with 2.5 stories plus a basement. We have received a first draft from the general contractor and would like to discuss it with you.

The floors are divided as follows:
Basement = utility cellar
Ground floor = living/dining + kitchen + WC + storage
Upper floor = 2 large children's rooms + family bathroom
Attic = bedroom + office + WC/bathroom

Development plan/restrictions
Plot size: 420 sqm (4521 sq ft)
Slope: no
Site coverage ratio: 0.4
Floor area ratio: not specified
Parking spaces: carport + 1 parking space
Number of floors: 2.5
Roof type: gable roof, 35 degrees
Style: semi-detached house
Orientation: southeast
Maximum heights/limits: ridge height = 6.5 m (21 ft 4 in), overall height = 10 m (32 ft 10 in), max width = 9 m (29 ft 6 in). Due to the overall height limit and the 35-degree roof pitch, the max depth = 10 m (32 ft 10 in).

Homeowners’ requirements
Style, roof type, building type
Utility basement, 2.5 stories
Number of occupants: 2 adults + 2 children (5 and 7 years old)
Guests per year: negligible
Large kitchen, open but can be closed off with sliding doors; kitchen island for prep work (cooktop not planned on island for now)
Number of dining seats: 6
Fireplace: ethanol fireplace integrated into the living room wall
Carport
Separate floor for the children with large bedrooms
Sauna in the attic
Dormer on the north side
Ceiling height on ground and upper floors: 2.50 m (8 ft 2 in) each
Office/guest room in the attic

House design
Design by: general contractor (redrawn by me in Sweet Home 3D with furniture added)
What do we like most and why?: large living room with big windows, spacious kitchen, large children’s rooms
Preferred heating system: air-source heat pump

What is the main/basic question about the floor plan in 130 characters?
- Living room: are the windows chosen too large?
- Children’s rooms: how do you find the layout, especially child 2’s room?
- Family bathroom: is the passage to the toilet and shower too narrow?
- Office: 2 m (6 ft 7 in) depth is reached quickly after the entrance; the dormer exists but I’m unsure how the room will feel. What do you think?

2D floor plan of a house with sauna, shower/WC, bedroom, staircase, and living area

Floor plan of a house with carport, terrace, garden, kitchen, living/dining, shed, storage, foyer.

Floor plan: technical room 11.5 m² (124 sq ft), storage room 18.5 m² (199 sq ft), hobby room 32.0 m² (345 sq ft), corridor 5.0 m² (54 sq ft), staircase

Floor plan: bathroom, corridor, stairs, two children’s bedrooms with beds, living room with sofa and desk.

K a t j a29 Mar 2022 19:45

#31

ypg schrieb:

Did you know that now people are already planning with 47cm (18.5 inches) exterior walls?! 😎

Yes, I usually try to stick to the standard wall thicknesses from the plans. That’s why it’s a bit annoying that nothing is specified here.
The bigger question is the ceiling height. For a 2.50m (8 ft 2 in) floor-to-ceiling height — what values do you use for the ceiling structure and floor build-up? I had always assumed 30cm (12 inches), but recently someone mentioned 50cm (20 inches) here. That confused me.

ypg29 Mar 2022 20:19

#32

K a t j a schrieb:

but recently someone here mentioned 50. That made me uncertain.

They probably had quadruple glazing 😉 (a little running joke)

K a t j a schrieb:

The question is more about the floor-to-floor height.

Why are you wondering about that? It doesn’t matter much if you’re working within standard parameters and not trying to recreate Rick’s house or my gallery. You probably won’t be doing detailed construction drawings. As a layperson, you can’t be expected to plan down to the centimeter… The slab or, in the case of a basement, some additional height also needs to be accounted for.
The idea seems fairly simple: with 10 depth and 35 DN, you get about 3.50 meters (11.5 feet) from the sketch in the middle. A 50cm (20 inch) slab or plinth leaves a clear height of 6.00 meters (19.7 feet) for two floors. You won’t need to perform any magic there. The rest is for the architect to figure out.

corby_8129 Mar 2022 20:20

#33

I have revised the floor plan.

Ground Floor

Staircase moved further south
Removed the angled wall in the living area and opened it up. Glass sliding doors can be used to close off the living area if needed.
Corner window moved to the north

Note: I don’t find the niche in the hallway problematic or disturbing. I’m familiar with it from my parents’ house and think it doesn’t draw attention if a plant or something similar is placed there.

First Floor

Due to the staircase relocation, the bathroom is deeper. I removed the T-shaped layout; the passage to the shower and toilet should now be wide enough.
I would have liked both children’s rooms to face south, but that’s not possible because of their small size. I think the northeast-facing room should still be bright with the use of large windows.
Both rooms should be roughly 24m² (260 sqft). The south-facing children’s room is currently 28m² (301 sqft), which is too large. I would prefer to make this room smaller and create a small storage room for items like the vacuum cleaner. At the moment, I don’t have a good idea of how to do this efficiently. Do you have any suggestions?

Attic

The sauna will now be located in the basement, which frees up more space for the bedroom and the guest/study rooms.

What do you think?

corby_8129 Mar 2022 20:25

#34

K a t j a schrieb:

Yes, I usually try to stick to the standard wall thicknesses. That’s why it’s a bit frustrating that nothing is specified here.
The real question is about the storey height. A ceiling height of 2.50m (8 ft 2 in) – what thickness do you use for the ceiling and the floor slab? I normally planned with 30cm (12 inches), but recently someone here used 50cm (20 inches). That confused me.

Exterior walls are 36.5cm (14 inches), interior walls 17.5cm (7 inches) and 10cm (4 inches).
Floor-to-ceiling height 2.50m (8 ft 2 in)
Knee wall approx. 40cm (16 inches)

gutentag29 Mar 2022 20:52

#35

The staircase with a height of 1.97 m (6 ft 6 in) does not work.

corby_8129 Mar 2022 21:28

#36

K a t j a schrieb:

Haha. 🙂
However, I am missing some height details. Specifically: is there a knee wall? Also, how wide can the dormer be, and is it allowed on both sides? Wall thicknesses are also unknown.

The roof dormer may be a maximum of one-third of the related roof length. On the south side, we do not want a dormer; it is planned to fully cover the south side with panels.

ᐅ Floor plan of a semi-detached house, 2.5 stories plus usable basement

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