I basically also find the approach absolutely right. Climate protection doesn’t come with pampering. However, I also see it critically that everyone should pay for it themselves. Especially in old buildings, the heat pump is simply a huge cost factor. Alone the surrounding measures quickly swallow more than 10,000€. Then the heat pump itself, and then you need photovoltaics because otherwise you simply heat with electricity, which is also expensive.
We will soon insulate the basement and install underfloor heating. In the rest of the house, the radiators would have to be replaced at least for a heat pump. The facade and roof are already insulated. New windows are already installed, a new front door is coming soon. New windows cost about 8-10,000€ over the years. New front door 4,300€. All self-installed. The facade was done already, roof insulation was also around 5,000€. Underfloor heating, screed, and insulation are also around 10,000€. New radiators might be about 2,000€ more. So. We haven’t even done the heat pump and the photovoltaics yet.