Are construction costs transferable to small houses?

Cool that new answers have been added here! Sorry, I needed a bit of a break from the house-building topic.

Besides the full-time job and private life, the topic can sometimes be a bit overwhelming (-;

I’ll get in touch in a few days once I have some breathing room with concrete answers.

A short update on why you’ve heard little from me:

Unfortunately, I only just found out that there is no gas supply where I want to set up the small house.

I am currently looking for heating solutions that make sense for one person and 40 sqm of living space.

Since I have my own forest, I would install a wood stove, but I still need hot water, and there should also be an emergency heating solution available if the wood stove can’t be used (hospital in winter or something similar).

The groundwater is only 1.5 meters deep, so I initially thought of ground collectors, but heat pump systems seem too expensive for such a small house.

Do pellet heating systems make financial sense for such a small living space? What costs should I expect?

Maybe someone with a similarly small project has had some experience.

Is it allowed to build something like that or a house with possibly a shed roof or wooden facade on your property?

It should be possible; when I inquired at the building authority, there was no concession, and there is no development plan for the village (only for the village entrance).

As a main residence, I would plan for a cellar replacement room or utility room, so then over 60 or 80 sqm.

Honestly, I always fear that despite good education and a well-paid job (I am my own employer), I could at some point depend on social welfare due to illness, and as far as I know, anything over 45-50 sqm can be taken away. It would of course be easier if you were two, then you have 90 sqm.

I can imagine many don’t think about such a situation, but when you have suddenly experienced illnesses in the family, you somehow always expect it.

Take a look at Dometic or Alde if it absolutely has to be gas. They make them for motorhomes and boats. Of course, you can also generate heat with electricity.

We produce hot water with instantaneous water heaters - despite the oil heating system. I don't know how often you would use an additional heater for the stove; if it's only rarely, then I would use an electric heater without hesitation.

Split air conditioner, great for electric heating and cooling with a factor of 3-4, + electric 50 or 80l boiler