ᐅ Floor Plan Design for a Single-Family House with a Basement on a Sloped Site
Created on: 22 Mar 2025 13:41
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57Christian
Hello everyone,
we are currently planning to build a single-family house with a basement on a sloped site and would appreciate your feedback.
Development plan / restrictions
Plot size: 517 sqm (approximately 5,567 sq ft)
Slope: yes
Site occupancy index: 0.3
Floor area ratio: 0.3
Number of parking spaces: 0/1
Number of floors: 1.5
Roof type: gable roof
Maximum heights / limits
Other requirements: roof pitch 28-45°. Knee wall height 75 cm (30 inches), defined slightly differently
Client requirements
Basement, floors: basement + ground floor + attic living space
Number of people, age: currently 3 people (2 adults + 1 child). Planning should include child #2.
Space requirements on ground and upper floors
Office: family use or home office?
Overnight guests per year: not relevant, occasional
Open or closed layout: rather open
Conservative or modern design: rather modern
Open kitchen, kitchen island: yes, kitchen island if possible
Number of dining seats
Fireplace: currently under discussion
Balcony, roof terrace: terrace facing south + terrace facing west planned
Garage, carport: 1 garage, with space next to it for carport / garage (optional, future)
House design
Who designed it: general contractor from the area
What do you like especially? Why? Open living area. All requirements accommodated. Option for a second garage.
What don’t you like? Why? Currently considering removing the second bathroom in the attic and instead adding a shower on the ground floor.
Price estimate according to architect/planner: 500,000 excluding land, additional costs, civil engineering, and landscaping.
Preferred heating technology: heat pump
If you have to give up something, which details / extensions
- can you give up: separate bathroom for the children in the attic
- can’t you give up: open living area, large bathroom upstairs
Why is the design like this? It is the first design from the contractor. Other plans were partly similar.
we are currently planning to build a single-family house with a basement on a sloped site and would appreciate your feedback.
Development plan / restrictions
Plot size: 517 sqm (approximately 5,567 sq ft)
Slope: yes
Site occupancy index: 0.3
Floor area ratio: 0.3
Number of parking spaces: 0/1
Number of floors: 1.5
Roof type: gable roof
Maximum heights / limits
Other requirements: roof pitch 28-45°. Knee wall height 75 cm (30 inches), defined slightly differently
Client requirements
Basement, floors: basement + ground floor + attic living space
Number of people, age: currently 3 people (2 adults + 1 child). Planning should include child #2.
Space requirements on ground and upper floors
Office: family use or home office?
Overnight guests per year: not relevant, occasional
Open or closed layout: rather open
Conservative or modern design: rather modern
Open kitchen, kitchen island: yes, kitchen island if possible
Number of dining seats
Fireplace: currently under discussion
Balcony, roof terrace: terrace facing south + terrace facing west planned
Garage, carport: 1 garage, with space next to it for carport / garage (optional, future)
House design
Who designed it: general contractor from the area
What do you like especially? Why? Open living area. All requirements accommodated. Option for a second garage.
What don’t you like? Why? Currently considering removing the second bathroom in the attic and instead adding a shower on the ground floor.
Price estimate according to architect/planner: 500,000 excluding land, additional costs, civil engineering, and landscaping.
Preferred heating technology: heat pump
If you have to give up something, which details / extensions
- can you give up: separate bathroom for the children in the attic
- can’t you give up: open living area, large bathroom upstairs
Why is the design like this? It is the first design from the contractor. Other plans were partly similar.
H
hanghaus202324 Mar 2025 23:26Here is my suggestion. The garage / carport and entrance then in the basement. Answering my question would help.
11ant schrieb:
That’s not just a lot of budget for excavator buckets, but also a significant impact on the groundwater level. That’s just how basements are, right?
For this plot, I currently think the idea of having the garage in the basement level is a good solution. It’s too narrow and steep to park the cars elsewhere. Either way, you have to dig a hole for them, and there’s no space for switchback ramps.
My question would be whether to raise the basement height from the current 295 cm (9 ft 8 in) a bit? It’s a shame about the unused space, but then the south-facing terrace would be higher and there would be less excavation needed there. That would make the space brighter, more inviting, and you wouldn’t feel like you’re sitting so much in a dark hole. Of course, you would have to add some fill instead. The excavated material probably wouldn’t be enough for that. So, an expensive seating area. Hmm, financially, the terrace on the south side is actually too costly.
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57Christian25 Mar 2025 06:55Answering my question helps. What does the reference height of 368.77 m (1,209 ft) refer to? I probably overlooked the eaves height limit?? If the question is about that: I have no idea. I just noticed this number on the drawing, with a D in front.
Or was it about a different question?
Here is my suggestion. So, move the house further forward? Lower the levels of the basement and garage even more? Otherwise, it would still be steeper.
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57Christian25 Mar 2025 06:57My question would be whether it might be worth increasing the basement height from the current 295 cm (116 inches)? In the current plan, I believe it is already somewhat higher than usual. But perhaps it would be a good idea to make it a bit taller.
57Christian schrieb:
In the current plan, I think it’s already a bit higher than usual. But maybe it’s a good idea to make it a bit taller.Yes, for a basement that is already quite generous. However, you might consider using the rest as a lower ground floor and reduce the total height. Standard story height is usually just over 3m (10 feet). I would probably aim for around 3.30m (11 feet). It also depends on the blocks used. Are these 10 x 29.5cm (4 x 12 inches) in height?Similar topics