How many hours of sunshine does a house need?

For good living comfort, a property should receive at least 3–4 hours of direct sunlight per day, even in winter. A south-facing orientation is optimal; you should avoid purely north-facing locations.

How can I check the sun path of a property?

Use online simulation tools that calculate the position of the sun for any date and address. In addition, visit the property on a sunny day – ideally in winter.

Does sun exposure affect property value?

Yes, significantly. In Switzerland, south-facing locations with good sun exposure achieve price premiums of 5–15% compared with comparable north-facing locations. Energy consumption is also lower when sun exposure is good.

What does shading mean and how do I check it?

Shading is caused by surrounding buildings, trees or topography. It can be particularly problematic on slopes and in dense neighbourhoods. Check the shadow cast on 21 December – the shortest day.

Sunlight & Sun Path: Interactive Tool

Interactive sun path simulation for property locations in Switzerland. Sunrise, sunset, daylight, and seasonal differences.