ᐅ South-facing sloped plot, 700 sqm, single-family house about 150 sqm, looking for design ideas?

Created on: 28 May 2025 22:52
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Hanger1
Hello everyone,

We have been working for some time now on how best to position our future single-family home on our plot. We want to utilize the existing slope as efficiently as possible and avoid losing too much green space.

Development Plan / Restrictions
Plot size approximately 700 sqm (8,400 sq ft)
Slope: yes, 10% south-facing slope
Site coverage ratio (Floor Area Ratio) 0.3
Floor space index 0.6
Number of parking spaces: 2 (garage or carport)
Orientation: Ridge direction can be freely chosen
Maximum heights / limits: The eaves height on the valley side must not exceed 6.65 m (21.8 ft)
Maximum 2 full floors
Setback distances according to the regulations of the Bavarian building code
Attached garages to the boundary are only permitted where garages are built together within the areas designated in the development plan
For other garages, a minimum distance of 1.20 m (4 ft) from the property boundary applies

Client Requirements
Approximately 150 sqm (1,615 sq ft) of living space
Basement, floors: open. However, due to the slope, a basement is likely. Possibly using the basement as a garage.
Number of occupants, ages: 2 adults, 2 children

House Design
Designer: Do-it-yourself

Could you please provide some input on the preliminary planning of a single-family home?

The building site has a south-facing slope of about 10%.

The road is located on the north and west sides.

I have already marked the key points by laser. Zero point at northeast. The measurements are given in centimeters and should actually be negative since it is a south-facing slope.

The plan is for a single-family home of about 150 sqm (1,615 sq ft) with a garage or carport.

Option I a
5 m (16.4 ft) from north and west
House approximately 10 x 10 m (33 x 33 ft)
Garage integrated into the basement. Driveway access from south/west.
Guest entrance on the north side.

Advantage:
Everything fits within the 10 x 10 m (33 x 33 ft) footprint.

Disadvantage:
The garage driveway must be in front of the house, which results in a substantial loss of green space since there is only 7.5 m (24.6 ft) width available on the east side.

Option I b
House is positioned 5 m (16.4 ft) from north and east, leaving 7.5 m (24.6 ft) on the west street side. However, the driveway to the basement garage would definitely be too steep here.

Option II
Build the basement slightly higher and place the sleeping and bathroom areas in the basement so that the garden can be accessed directly from this level.

The upper floor has the main entrance on the north side, accessed by several steps. This floor contains the kitchen, dining, and living areas.

The garage or carport is built beside the house.

There is a balcony terrace on the upper floor, accessible from the dining area. The garden is reachable via stairs.

Advantage: Much more green space remains on the south side.

Disadvantage: Significantly more earthworks required. Overall less green area preserved.

Similar properties in the neighborhood:
2 full floors + basement + garage: In my opinion, the basement is only used as unnecessary storage space here. The costs are too high for this.
Slab foundation + 2 full floors + garage: Due to the slope, this requires extensive earthworks.

Attached are the height measurements, sketches of the options, and an excerpt from the development plan.

I would appreciate any input or other ideas very much.
Grundstücksplan: grüne Fläche, rotes gestreiftes Gebäude, Grenzlinien, Baumgruppe.

Kartenbild mit Kompassrose oben und rotem Rahmen um einen Gebäudekomplex an einer kurvigen Straße.

Skizze eines rechteckigen Plans mit Rundbogen oben links, O/X-Markierungen, Maße 25,5 m.

Grundriss eines Gebäudes: Haus in Mitte, Gästezugang oben, Einfahrt unten links.

Lageplan: Haus in Mitte, Carport Var1 rechts, Carport Var2 unten links; rote Markierung.
Y
ypg
5 Jun 2025 09:54
hanghaus2023 schrieb:

From a structural perspective, I see fewer issues there.

Well, you need to create a half level (the ground floor) with additional strip foundations or similar (I'm neither a structural engineer nor a geotechnical expert). Then there is the basement, which requires a barrier against the soil where the central wall is located.
And you made the same mistake I did: for simplicity, the stairs should be on the lower level so you don’t have to create another room below the ground floor for the staircase going down.
motorradsilke schrieb:

I would swap the garage and house, and place the driveway on the north side. That would leave a better southwest garden.

That’s true. I see that now as well: this opens up the garden more towards the southwest corner, but results in a wider setback from the property boundary for the garage. Personally, I don’t think that’s bad at all, but many people don’t like leftover strips of land. I assume the original poster feels the same, since even a meter to the east is viewed negatively here.
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hanghaus2023
5 Jun 2025 10:11
The setback area on the east side makes it a variant like this.

Floor plan of a building with two overlapping blue rectangles; label 'Bathroom'.


There might also be a site plan that doesn’t look as shifted. Possibly available in the geoportal.
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motorradsilke
5 Jun 2025 10:31
hanghaus2023 schrieb:

The setback area on the east side results in this kind of layout.
sued-hang-grundstueck-700qm-einfamilienhaus-ca-150qm-ideen-input-689122-1.png


Maybe there is also a plan of the plot that doesn’t look as shifted—possibly available in the geoportal.


You could also rotate the house. The required area would remain the same.
Y
ypg
5 Jun 2025 11:17
motorradsilke schrieb:

You can also position the house sideways then. The required area remains the same.
However, the setback distances must be observed. With a width of 22.5m (74 feet) and a double garage, there isn’t much space left for the house. So, in that respect, it’s still a trade-off?!
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motorradsilke
5 Jun 2025 11:27
ypg schrieb:

The setback distances must be observed, though. With a width of 22.5m (74 feet) and a double garage, there isn’t much left for the house. So in that case, another swap after all?!

Yes, probably. I was originally assuming the buildability of the marked area.
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hanghaus2023
5 Jun 2025 12:44
motorradsilke schrieb:

Yes, probably then. I had assumed the marked area was buildable.
However, that area is only for the garage. In my opinion, the setback for the house should still be maintained.