Using geothermal to heat buildings

I have a friend who recently built a house that is entirely heated and cooled with geothermal and natural ventilation. Furthermore, all of their power comes from solar and water comes from rainwater harvesting.

Here's a nice explainer video about geothermal:

Well, Adam, geothermal energy is in fact already used in France for instance. I know of people who used it to heat the homes, usually a big home. Like former farms or old castles. Because it is cheaper in the long run and more efficient. It is true that you need to do an important investment at first, the installation of the tubes inside the house and the pump outside is an investment, but the quality of the warm is so much better, more efficient and in the long run, cheaper than any other option available at the moment.
Now I don't know if, the soil/land needs to have some particular geological structure. I don't know if in a country such as the Netherlands, with sandy land can also produce geothermal energy, but I know in other European countries with a different geological composition it works.
I see geothermal heating as a real solution.
The Netherlands will remove gas as a source of heating and cooking for all residential buildings. The main reason is that the government wants to reduce CO2 emissions from the built environment by 80% in 2050. So what alternative we have to heat our homes? The weather here requires that we have heating in our home for 6 months at least. Solar panels? well, this is what is been offered at the moment. but when the weather is cloudy in winter, maybe it is not enough. By 2050 there will be more alternatives, I am sure of it.

LOL, I was about to post the same link. You beat me to it!