ᐅ Slope and Site Access Planning

Created on: 2 Oct 2020 12:22
A
Anson Argyris
Hello Homebuilding Forum,

We are more or less about to start the project, and finally, the surveyor has sent the data to our architect.
Now we have a problem with the reference height: our building plot starts 7m (23 feet) from the property boundary, and according to the architect, the bottom edge of our garage is at about 4m (13 feet) elevation. This makes it impossible to create a reasonable driveway directly into the garage, as the slope would be around 50%.

Do you have any suggestions on how to keep this within a sensible range without having to create switchbacks for the garage entrance?

I have attached the architect’s drawings.

Thank you very much and best regards, Anson

Architektur-Schnitt A-A und Nordansicht eines zweistöckigen Hauses mit Dachstuhl und Maßen.


Südsicht auf ein zweigeschossiges Einfamilienhaus mit Garage, Terrasse und Geländegefälle.


Westansicht eines geplanten Einfamilienhauses auf abschüssigem Gelände mit Grenzlinien.


Vorentwurf: Grundstücksplan mit Hausgrundriss, Garage mit Autos und Grenzlinien.
H
haydee
8 Oct 2020 17:24
It is located below ground level. I have a basement with living spaces myself. It doesn’t feel like a cellar.
11ant8 Oct 2020 19:37
nordanney schrieb:

A house with 200 m² (2,150 sq ft) is not "average" either compared to house catalogs or in absolute terms. That is clearly above average.

There is no such thing as an "average" in the segment of "houses for alpine plots" because this narrow market segment does not provide a statistically significant population to determine a relevant average.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
E
Escroda
9 Oct 2020 22:40
Anson Argyris schrieb:

Actually, I was hoping for some proposed solutions here, but so far I haven’t noticed much.

This is not due to a lack of proposed solutions, but rather because you are not retaining the information. You also do not respond to follow-up questions or do so unclearly, which makes it difficult to explain the proposed solutions to you in more detail. Here is the basic elevation plan, showing the information from the development plan and your site plan:

Topographical site plan of a plot with building area and contours.

As shown here—as was already evident in the west view—it is clear over the area that the steepest slope is at the driveway. Therefore, for the majority of the earthworks, it does not matter whether you plan open parking spaces or garages, since the slope will need to be reduced to 15% in any case. It is also clear that shifting the building east-west will not affect the earthworks because the contour lines run almost exactly in that direction.
Anson Argyris schrieb:

Moving the house east will definitely mean more earthworks for us.

On what basis do you make this statement?
Anson Argyris schrieb:

I imagine the solution as I have already drawn it.

That is the problem. You are stuck in your ideas.
Anson Argyris schrieb:

Thank you for your suggestion. I know we have to do earthmoving, but I have no interest in reshaping almost the entire plot.

That was all you wrote in response to my proposal. What am I supposed to do with that? Where exactly are your points of criticism?
Anson Argyris schrieb:

Calling me naive because of that.

I did not say that. I would only say it if you had already bought the plot and believed that my proposal would completely reshape the entire property. Then you would have no spatial understanding and buying a sloped plot without expert advice would indeed be naive. You are seeking advice here before purchase—and that is wise.
Anson Argyris schrieb:

Every cubic meter of soil moved costs 20,- € excluding disposal fees, so hopefully it’s understandable why I am reluctant to reshape the entire plot.

Correct. It is not allowed according to the development plan anyway. That is why I shifted the house eastward and raised it by 1.5 m (5 feet). I also positioned the garage away from the neighboring boundary, since the future owner is unknown and any boundary building—whether garage, carport, or retaining wall—would only be feasible with sheet pile walls, which would significantly increase the budget. If funds are tight, you can start without the garage.
Anson Argyris schrieb:

Earthworks and basement

Not a basement, but a lower ground floor.
Anson Argyris schrieb:

Simple is boring.

… but affordable.
Anson Argyris schrieb:

Because of building regulations and the site conditions, the project becomes so difficult to implement.

It is not difficult at all. You just need a planner experienced in hillside construction.
Anson Argyris schrieb:

Was not clear.

What is not clear are your ideas. According to your statements, the floor plan thread is obsolete. Now there is a granny flat that was created by chance, although you do not need it? What do you want, what do you need, what can you afford? Start a new thread including a fully completed questionnaire with up-to-date information.
H
hampshire
10 Oct 2020 10:26
Just estimate a flat additional cost of €150,000 (approximately $165,000) for your plot with a flat land design. This allows you to build something on the property that doesn’t necessarily have to follow the most economically sensible approach. If that’s too expensive and you find the basement solution too boring, then stay away from the plot.
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Anson Argyris
10 Oct 2020 14:59
Hello,

thank you very much for your efforts, the thread can now be considered closed.
Please excuse me for not addressing everything you had written.

We will definitely not be purchasing the plot of land anymore; the reason is quite clear from my perspective: "economically unfeasible."

Regards, Anson
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Nice-Nofret
10 Oct 2020 15:21
Yes, that seems like a reasonable decision to me.