Wow, things are really moving here, I hadn’t even had this topic on my radar anymore.
In fact, we were considering throwing the whole "KFW" idea overboard and trying to build with good insulation and a gas boiler. Whether all the costs will pay off eventually (over the years), I can’t say as a layman – we are hoping for low costs throughout the year thanks to photovoltaic and the heat pump (which type is still not quite clear to us) rather than a gas boiler.
However, the subsidies and the bit of independence from conventional suppliers (except electricity, of course) are already an attractive idea. We initially wanted to build without photovoltaic, but the jump to the "+" is not so expensive anymore because of the KFW subsidy.
We have now decided on another architect who made us a good offer. Unfortunately, we have few points of comparison and in a neighboring district everything suddenly costs only half, which generally leads to uncertainty. But he really convinced us on a human level and was able to provide valuable tips for the sketch based on our fairly concrete ideas.
Offer looks roughly like this:
Architect: Service phases 1-4
Structural engineer: Structural planning
Energy consultant: KFW subsidy application, photovoltaic simulation (whatever that is?), on-site supervision (was important to us so that we don’t only find defects at the blower door test)
Total offer for everything: ~16,000€
According to him, the following still comes on top:
~1500€ for the permit
~300€ for documents from the cadastral office
~1500€ for a geotechnical report
If you add everything up, we are therefore at just under 20,000€ gross and have a permit with all bells and whistles and can take over ourselves from there – as I see it as a layman.
One of our biggest problems is that the trades we have contacted so far cannot give us any costs. This is logical, since there is no design, but it makes cost estimation extremely difficult for us and we can only rely on average values from the internet and the architect’s experience.
As well as the topic of own contribution making the calculation immensely difficult.
Our standards for the equipment are manageable. No Villeroy & Boch needed, the 60€ faucets do fine too. I would describe our aimed standard more as "average". The kitchen will be assembled ourselves from the Swedish furniture store and installed by ourselves. The electrical appliances are class “Siemens” and will be ordered from the internet. We plan about 10,000€ for the kitchen (~12sqm), which roughly matched what my parents spent (with own work and enough willingness) without sacrificing comfort.
No fireplace or chimney planned.
Paving will be rather limited for us, as the house will sit quite directly at the street with the front. The plan is to order the stones and lay them ourselves.
Many thanks for the lively participation!