Planning: Demolish an 80m² old building, erect a wooden house

Hello dear community,

I have tried to read through here and was able to understand quite a bit. Now I wanted to try to share my planning with you in order to correct any misjudgments or misplanning on my part.

I am M 33, married with 2 children – currently renting in BW – My parents have a plot of land in a small village in Rhineland-Palatinate. Now the idea is to build a small wooden house on my parents' land from a prefabricated wooden house manufacturer. Currently there is an old building 37A, at first the idea was to renovate it and make it habitable again. When I called the craftsmen, every single one said that it was not worth it; even the energy consultant said it was not worth it. Since I am not a professional in this field, I took the assessment seriously and am considering tearing down the old building and building a wooden house there. This old building previously also had a water pipe and currently also an electricity supply. The water pipe was cut by my father due to the risk of water damage.

The old building measures 6.50 meters wide and 9.50 meters long.

Planned is a prefabricated wooden house which is smaller in floor plan in order to simplify the building permit etc. Or simply to avoid complications with larger objects.

I am open to any criticism or questions.
I have also added a rough calculation of the costs.
If I have forgotten a cost item or if a cost item has unrealistic numbers, I also ask for experience values.

Many thanks
Yours, the layman

So, if you follow the link, there are different numbers. The construction description, uhmm. You don't need a roof? Heating, tiles, building permit (is probably included in the ancillary construction costs?) The whole thing is just a bunch of material that is delivered, so a completely different warranty.
Payment terms: without a guarantee a no-go
Conclusion: add a few euros, then have a local carpenter build it and you know what you get. With warranty and guarantee.

In principle, nothing relevant has been said: What kind of development area is this? Is there a development plan? What is allowed to be built? Does paragraph 34 of the Building Code apply? Then the entire technology is missing: there is no technical room, no power supply, there is only the bare wooden house. Foundations are also missing. For that, earthworks are needed. And who finances it? Is there a bank that finances something like this? How liquid are you? The demolition and disposal also cost money.

So, if you follow the link, there are different numbers. The building description, uhmm. Don’t need a roof? Heating, tiles, building permit (should probably be in the incidental construction costs?) The whole thing is just a bunch of material you get delivered, so a completely different warranty.
Payment terms: without a guarantee a no-go
Conclusion: put a few euros on top, then have a local carpenter build it and you know what you get. With warranty and guarantee.

Thank you very much for your opinion first of all.
1. Roof is included in the kit. You are right, I forgot heating. I have a cost item bathroom where the tiles are included.
2. Yes exactly, material and then assemble it yourself or I also have a cost item assembly 22k on my cost overview.
3. I have called and asked various customers of theirs who built such a house with Pineca and they all made such a payment, so I don’t think it will be a problem. But anyway thank you for your opinion, I will take it into account.
4. I will try to find a carpenter who does that in my region.

Thank you very much for your opinion and your time

Basically, none of the relevant points have been mentioned: What kind of development area is this? Is there a development plan? What is allowed to be built? Does Paragraph 34 of the Building Code apply? Then all the technical aspects are missing: there is no technical room, no power supply, there is only the bare wooden house. Foundations are also missing. Earthworks are needed for that. And who is financing? Is there a bank that finances something like this? How liquid are you? Demolition and disposal also cost money.

Thank you very much for your opinion and criticism. 1. Old building area 2. There is a development plan 3. I am currently in the exploratory phase; I myself don’t know what I am allowed to build. I wanted to present my planning. 4. There is no technical room. I have included power supply costs in the cost overview; that would be done afterwards. 5. When I asked at my savings bank, they said I could get financing up to 200k. 6. Or do you mean that no bank finances a wooden house? 7. Demolition and disposal are to be handled privately; I have accounted for these costs in the cost overview as well. Thank you in any case for your opinion.

In short, you receive a shell construction kit for a house to be completed. From the necessary connections to wiring and technology (electricity, water, heating, ventilation), the prior building permit, the interior finishing (floors/walls/bathrooms) up to the still necessary construction of the foundation or the slab everything still needs to be done.

Conclusion: The house will end up costing just as much or as little as any other house. Although I don't want to speak badly of the houses. However, as a bank, you would not get a loan from us for the house, as it is more likely to be classified as a holiday home.