ᐅ Floor plan of a semi-detached house with a guest room

Created on: 28 Apr 2022 22:57
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hausbau23inHE
Hello everyone,

I’ve finally registered and would like to ask for your advice, tips, and feedback on our floor plan.
We started looking for a plot about 4 years ago and, of course, had a dream house in mind (urban villa, basement, double garage…). Now we’re considering a semi-detached house if we can afford it at the current prices. We have basically scaled back to the minimum – it should just be a regular house for ordinary people ‍♀️ no frills. We currently live in a 3-room apartment of about 80 sqm (860 sq ft) and in a few years it will definitely be too small. The plot is offered by the city and not overpriced – so we hope we can manage to plan something decent on it. We have already received several offers:
  • Architect, 290k for the house (calculated with 1300 €/sqm…)
  • Nationwide prefab house supplier 390k
  • Regional company, solid construction 375k

The house is now planned with dimensions of about 8.5x13 m (28x43 ft) (I am not allowed to post the detailed drawing). The garage is planned on the wall between the kitchen and the study.

We’re very curious about your input!

Development plan / restrictions
Plot size: 529 sqm (5695 sq ft)
No slope
Plot ratio (floor area ratio): 0.4
Building coverage ratio: 0.4
Building envelope, building line and boundary approx. 12x15 m (39x49 ft) (garage must be inside the building envelope due to regulations)
Edge development: semi-detached property
Number of parking spaces: 2 if possible
Number of floors: 1
Roof type: gable roof
Style: classic
Orientation: north/west
Maximum heights/limits: 4.5 m eaves height (14.75 ft)
Other requirements: private green area in the west, street in front of house is a dead end and only 3 m wide (10 ft)

Owners’ requirements
Style, roof shape, building type: classic, gable roof, semi-detached house
Basement, floors: no basement (too expensive), 1 full floor allowed according to the development plan = 1.5 floors
Number of residents, age: currently 3 (ages 35, 33, 1), grandparents will stay with us about 4 months a year (spread out), older, grandfather has mobility issues
Room requirements ground floor / upper floor:
- Ground floor: kitchen, living/dining room, pantry, utility/technical room, home office/guest room, shower toilet
- Upper floor: 2 children’s rooms about 15 sqm (160 sq ft) each, bedroom (there should still be enough space next to the bed for a child’s cot), bathroom with bathtub and shower
Office: family use or home office? Both (actually a home office, the second children’s room is initially an office, and the home office downstairs doubles as a guest room for the grandparents so they don’t have to climb stairs. My grandfather would also sleep on the couch, but a) that’s bad for his back and b) he should have privacy and a place to retreat).
Guests per year: frequent, about 12–20
Open or closed layout: open
Conservative or modern construction: still open, but solid construction is planned
Open kitchen, island: open kitchen, if possible without direct line of sight to the living room, no kitchen island but space for a French door refrigerator
Number of dining seats: 8
Fireplace: no
Music/stereo wall: no
Balcony, roof terrace: no
Garage, carport: would prefer a garage, but somehow couldn’t plan it on the plot without blocking light on the west side, so we switched to a carport ‍♀️‍♀️ the builder then added a garage again; we’re not sure yet how we feel about it
Kitchen garden, greenhouse: vegetable garden, dining table with 8 seats, play area for the kids
Other wishes/particularities/daily routine, including explanations why certain things are or are not desired:
  • We have to build to KfW40 standard, and if photovoltaic panels are installed, 40% of the roof area must be photovoltaic (city requirement)
  • Need space for a deep freezer in the utility room
  • Showers should be walk-in or at least have a low bathtub
  • We are not allowed to build a separate apartment on the plot

House design
Who designed it: regional builder
What do you particularly like? Why? Utility room and stairs on a shared wall, better use of daylight
What do you dislike? Why? Bathroom arrangement (I’d prefer windows on the west side for the children’s rooms, bathroom ideally with double-wing windows); long narrow hallway; kitchen is too small/too little workspace for cooking and baking a lot; maybe pantry under the stairs or integrate storage in the kitchen? We hardly have any drink crates but currently have a well-stocked 1.5 sqm (16 sq ft) pantry
Price estimate according to architect/planner: 375k without photovoltaic, 360k if built simultaneously with the other half
Personal price limit for the house including fittings: 340k (new kitchen included; we take it with us and will rebuild)
Preferred heating technology: air-source heat pump with underfloor heating

If you had to give up, which features/expansions?
- Could give up: third children’s room (he included it because the ground floor is so large), pantry, open kitchen (although reluctantly ‍♀️ we have already rationalized down from our “dream house”)
- Cannot give up: guest room/office and shower toilet on the ground floor

Why is the design the way it is now? For example:
Design by the builder’s planner; we have already spoken with several companies and sometimes received standard designs that did not fit at all. Now we get to add our input. Initially, I wanted just 3 rooms plus bath upstairs (he designed the house much bigger so everything fits downstairs), but I’m confused because one company told us the technical room must be on an exterior wall and take up at least 3 m (10 ft) of wall length … ‍♀️‍

What is the most important/basic question about the floor plan summarized in 130 characters?
How can we arrange the rooms on the ground floor sensibly and large enough to get good light & enough storage? How does the garage fit on the plot?

Plot plan with outline, approx. 529 m², red border


Floor plan: living/dining, kitchen, hallway, pantry, study, utility, shower/WC.


Upper floor plan with bedroom, bathroom, dressing room, hallway, and three children’s rooms.
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ypg
29 Apr 2022 11:33
hausbau23inHE schrieb:

Building window, building line and building boundary approximately 12 x 15 m (garage must be located within the building window due to regulations)
Then please show us the building window, drawn into the site plan. Also, the house dimensions. I might have missed the living area in square meters, but that would be interesting to know for budget reasons.
Hesse seems to have even “cheaper” building corners compared to northern Germany? That was my impression…
The floor plan is really not good: walk-in closet too small and restricted by the sloping roof, a built-in wardrobe under the sloping roof would offer more space… bathroom drainage in the dining area… long hallway without a coat storage area…
And will the other semi-detached house be built by the same general contractor? Are the other homeowners already known?
Otherwise, I suggest rotating the house, since semi-detached houses need to be attached, but it doesn’t have to be the long side of both.
By the way, from what I remember, houses currently planned as monolithic KfW 40 have exterior walls thicker than 44 cm (17 inches).
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Neubau2022
29 Apr 2022 11:36
ypg schrieb:

By the way: the houses currently designed as monolithic KfW 40 have exterior walls thicker than 44cm (17 inches), if I remember correctly.

Do the filled 36.5cm (14.4 inches) blocks count as monolithic construction? If so, they should also be sufficient for KfW 40.
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ypg
29 Apr 2022 11:39
Neubau2022 schrieb:

Do filled 36.5cm (14.4 inches) blocks count as monolithic construction? If so, they should also be sufficient for KfW 40 standard.
I’m not sure. It really depends on the block. Poroton 36.5 probably can’t meet that. It was mentioned here. But I do know that I’ve recently been reviewing floor plans (not just in this forum) where the walls looked so thick the drawing pen almost slipped.
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WilderSueden
29 Apr 2022 11:53
There are indeed insulated bricks that reach KfW40 standards at 36.5cm (14.4 inches), although I doubt these are realistic in the price estimate. Usually, you need 42.5cm (16.7 inches) plus plaster on both the inside and outside. Assuming 2cm (0.8 inches) each, you end up with 46.5cm (18.3 inches) (or 40.5cm (15.9 inches) for the high-quality bricks).
K a t j a29 Apr 2022 12:38
Here is a suggestion based on the assumption that the builder manages to relocate the technical room to the upper floor. Placing it downstairs would, in my opinion, make the ground floor too bulky and exceed the budget.


Grundriss eines Hauses mit Terrasse, Wohnzimmer, Kueche, Schlafzimmer und zwei Parkplaetzen.


Grundriss eines Hauses: Wohnzimmer, Essbereich, Küche, Schlafzimmer, Bad, Treppenhaus und Terrasse.


Grundriss eines Hauses mit Küche (K), Technikraum, Bad, Treppenhaus und Fluren.

Garage and pantry have been removed, as well as a third bedroom on the upper floor. Exterior wall thickness planned at 50cm (20 inches).
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nagner99
29 Apr 2022 13:04
1300€ will definitely not work in Hesse. Without additional construction costs, a basement, or KfW 40 standard—which is no longer subsidized anyway (you should check with the local authority if it is still required)—you should expect at least 2,200€/m² (approximately $204 per ft²).