€30,000 surcharge for geothermal energy sensible? Experiences?

What bad luck if the gas heating breaks down quite quickly and a new gas heating system is no longer possible once the legislator blocks the way.

Yes, that would really be bad luck ;)

3) Geothermal energy....at own expense....what are "normal" costs for geothermal energy in a new building? I have read 18,000-25,000 and we also found the 30,000€ expensive, still waiting to see how that breaks down exactly.

Of that, 8-10k are for the drilling, plus the heat pump itself. The cost of drilling also heavily depends on how deep you have to drill. If you do without a gas heating system, the developer also saves quite a bit: heating, connection, chimney. In that respect, a 30k surcharge is very high.

4) Subsidy afterwards: Are there "minimum waiting periods" after new construction? It's already crazy, house newly built 2022, gas out 2023 with subsidy??

The system has to be at least 2 years old and the building at least 5 years. For an "old building" still very new ;)

Yes, that would really be bad luck ;) About 8-10k of that is for the drilling, plus the heat pump itself. The cost of the drilling also depends heavily on how deep you have to drill. If you omit a gas heating system for it, the builder also saves quite a bit: heating, connection, chimney. In that respect, a 30k surcharge is very high. The system must be 2 years old and the building at least 5 years old. For an "old building" still very new ;)

Current prices for drilling are likely somewhat higher. A 110m deep drilling including piping cost me a good 8k, but that is probably a bit too tight for 180m². You should rather calculate with 12k due to 2 drillings and increased prices (extremely high utilization of companies at least here (NRW))

Yes, my GC also mentioned that the prices for drilling are increasing. If I remember correctly, we are looking at about 80m deep.

So, for the background: It is a "project-related development plan" and it does not provide for an air heat pump. Whether this can still be changed in the short time, I do not know.

Once again the question: Why no air-water heat pump? What exactly does the development plan state? It does not have to provide for an air-water heat pump, but explicitly prohibit it! And as far as I know, that is not allowed. There can be combustion bans (e.g. due to pellets and fine dust), otherwise it is a development plan and not a heating plan. An indoor heat pump cannot, as far as I know, be prohibited.

Option B: Indoor heat pump: We have inquired. Cost estimate is still pending. According to verbal statement, almost as expensive as geothermal heat, since the concrete basement has to be cut into, etc.

Don’t you have a basement staircase? The developer simply doesn’t feel like it. That is the reason. Device down the stairs. Next to that you need supply and exhaust air. That’s all.

Old Swede, I paid 31k for the entire heating and plumbing including 3 shower bathrooms and 2.5 kitchens with a brine-water heat pump (brine pipe installed by myself), 270m2 underfloor heating, and a central ventilation system for 2 residential units. And honestly, I already thought that was a lot... 30k additional cost is just nonsense.....

Man, I paid 31k for the entire heating and plumbing including 3 showers and 2.5 kitchens with a ground-source heat pump (ground loop installed myself), 270m2 underfloor heating and central ventilation system for 2 residential units.
And honestly, I already thought that was a lot...
30k extra costs is simply nonsense.....

No idea what backgrounds you have... doesn’t matter at all, congrats on your price. But it should be noted for the general public that your price is not a benchmark. Otherwise, someone here will get crazy.
That is completely unrealistic under normal conditions.

I also think 30k extra charge is too much. But it’s pointless because it’s a developer. He can do whatever he wants, you don’t have to accept it.

Then there are 10k for the drilling, 5-10k extra for the heat pump + heat pump-compatible underfloor heating installation, and the rest is just margin and no-interest surcharge.