ᐅ House Orientation

Created on: 9 Mar 2016 22:04

Hello,

we own an 850 m² (about 25 m (82 feet) wide, 35 m (115 feet) long) plot of land with a slight south-to-north slope (estimated about 2 m (6.5 feet) over 35 m (115 feet)). The plot itself is almost exactly oriented south/north, with access from the north. I tried to illustrate the layout graphically and hope it turned out somewhat clear.

How would you orient a house with a gable roof, where would you place the garage, and especially why? 😎

We like option A – with a south/west terrace, the garage would provide additional privacy. However, I believe that orienting the roof east/west is not ideal for solar energy, etc. Is that correct?

Additional question:
Can I somehow use the mentioned 2 m (6.5 feet) south/north slope to my advantage, or do I need to level the entire plot first? The terrace should be on the south/west side.
We currently plan to build with a basement.

Site plan of a building plot with building areas, street lines, and trees.

Black-and-white floor plan with four quadrants A B C D and north direction

Otus1110 Mar 2016 16:05

#13

Mike12345678901 schrieb:
That should work, or am I missing something?

Yes, the point is that, unless explicitly exempted, the principles of sections 6 (4) and (5) of the Bavarian Building Code (BayBO) apply to the distances between buildings. These rules are based on the height "H" and then require a minimum of 3 m (10 feet). So in case of doubt, significantly more than 3 m (10 feet) is necessary! Retaining walls are not relevant here.

You need to determine how high your building is expected to be for the value of "H" and what factor applies in your building zone for calculating "H"—possibly 1.0 (standard BayBO), 0.5 (in core areas), or 0.4 (by local ordinance). A call to the building authority is a good idea.

Mike1234567890110 Mar 2016 16:18

#14

Otus11 schrieb:
Yes, without an explicit exception, the principles of § 6 paragraphs 4 and 5 of the BayBO apply to the distances between buildings, which are based on the height H and then require at least 3 m (10 feet). In doubtful cases, this means significantly more than 3 m (10 feet)!
Retaining walls are therefore not relevant here.

You need to determine how tall your construction will be for the value "H" and what factor applies to the height "H" value in your building zone, possibly 1.0 (standard BayBO), 0.5 (in core areas), or 0.4 (by local ordinance). Calling the building authority is a good idea.

OK. Thanks for the advice.

Mike1234567890110 Mar 2016 16:19

#15

T21150 schrieb:
Hi!

I voted for option B.

East/West roof/solar orientation.
Compared to south-facing, you will lose about 5-7% in maximum yield (feed-in).

Regarding optimizing self-consumption (important since feed-in tariffs are low and decreasing), East/West is not bad at all—in fact, it can be beneficial.
You won’t necessarily have the full peak power at midday, but the energy generation is spread throughout the day.

Our collector for thermal solar is oriented exactly east.
The planned photovoltaic system will have 15 panels facing east and 13 facing west,
about 2 × 3.7 kWp with a small 2 kWh buffer battery.
PS: Just found out the system will be installed next Wednesday.

Best regards,
Thorsten

Great info, thanks!

Grym11 Mar 2016 20:04

#16

Wastl schrieb:
Clearly option B – in the attic, floor-to-ceiling windows facing south are possible

Wait, he didn’t say it would be a gable roof with a low knee wall, did he?
A gable roof and two full stories are definitely possible.

@OP: Desired eave height or maximum?

ᐅ House Orientation

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