ᐅ Floor Plan Design for a Single-Family House with a Basement on a Sloped Site
Created on: 22 Mar 2025 13:41
5
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.
K a t j a schrieb:
That is "Architect 3D Ultimate." However, the version is very old, from about 10 years ago.Is that the same software you use to create the purple floor plans?57Christian schrieb:
Exactly. That’s what I meant with the 20%. (80cm (31 inches) on 5.5m (18 feet)), and then another 2-3m (6.5 - 10 feet) behind the house.We probably have very different views on the heights: https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
11ant schrieb:
Is that the same tool you use to create the purple floor plans?Yes, in the past Avanquest used purple as their standard color. Now, I think they use a light blue instead.11ant schrieb:
We seem to have very different perspectives regarding the heights:What I mean is that the basement starts about 80 to 90cm (31 to 35 inches) above street level. The driveway and the 2m (6 ft 7 in) height difference will be excavated to accommodate this.57Christian schrieb:
Are there any major inconsistencies or things we absolutely need to change in the other version I shared? That is a huge, monster house. It fits even less within your budget. Please tell me the maximum amount you can spend all-in.
Do you already own the plot of land?
5
57Christian24 Mar 2025 20:35The plot is already ours. For the second house, we were quoted a turnkey price of 680,000. (650,000 is our maximum). This again excludes earthworks, additional costs, and exterior landscaping.
The entrance should be located in the basement level. At my in-laws’ place, there is a chain blocking the stairs for months due to ice and snow. Everyone, including visitors, then has to enter the house through the garage.
Driveways with a slope of up to 15% or 8.5 degrees can be managed relatively well. Beyond that, winter conditions or wearing shoes with heels make it more difficult and less practical. At my parents’ and in-laws’ houses (both have significantly steeper driveways than we do), I have slipped and fallen many times while shoveling snow or spreading salt. The car has also ended up stuck in the driveway several times.
Add a five-figure contingency on top of a turnkey price until the structural engineering report is completed and priced.
Driveways with a slope of up to 15% or 8.5 degrees can be managed relatively well. Beyond that, winter conditions or wearing shoes with heels make it more difficult and less practical. At my parents’ and in-laws’ houses (both have significantly steeper driveways than we do), I have slipped and fallen many times while shoveling snow or spreading salt. The car has also ended up stuck in the driveway several times.
Add a five-figure contingency on top of a turnkey price until the structural engineering report is completed and priced.
K a t j a schrieb:
The idea is that the basement starts about 80 to 90cm (31 to 35 inches) above street level. The driveway, including the 2m (6.5 feet) height difference, will be excavated accordingly. So a lowering of about 1.3m (4.3 feet) below the current terrain, which means the underground floor will be adapted to serve as the basement. This is not only a significant cost for excavation but also a notable intervention in the groundwater level. What does the soil report say about this?
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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