Zinspoker - Long term or short term?

That would still be €700 per month as of today. Admittedly, it might be the wrong season for an oil heating delivery right now, but the rising CO2 prices remain. Facade insulation and a new heating system are the right approach.

But if you can afford it from savings, then do it really before moving in.

But it is somewhat irrational to invest six-figure sums due to daily prices that only pay off after 25 years. That is a risky bet. I pay now, 2 to 3000 euros more per year. Who knows if next winter we won’t be back at €1.10 per liter? The financial viability of the renovation cannot be assessed as of now.

The currently high energy costs relate to gas, wood, and oil. War, drought, and the economic aftermath of the corona crisis are now hitting us hard all at once. What goes up, must come down

Therefore, I am reluctant to carry out extensive renovations that only make sense if we remain at these unaffordable prices in the long term. When it becomes foreseeable whether the current prices are temporary or permanent, it is possible to calculate more sensibly.

What is rational anyway? The longer you wait, the more extensive the renovations will have to be. From 2025 on, according to the coalition agreement, you will have to have a 65% share of renewable energy in your new heating system. Right now, it's still different.

And if you calculate with a 25-year amortization, it would also be better to carry it out as early as possible. The same concerns were expressed 2-3 years ago when I insulated my facade. Good that I went through with it, even though I was absolutely convinced that with NordStream2 the gas prices would remain permanently low.

Maybe energy-saving renovation measures have to be seen like stocks or ETFs: Time in the market beats timing the market.

Nice that you are so optimistic about the energy prices

It is somewhat irrational to invest six-figure amounts based on daily current prices that only pay off after 25 years. That is a risky bet. I pay now, 2 to 3000 euros more per year. Who knows if next winter we won't be back at 1.10 per liter? The financial viability of the renovation cannot be assessed at the moment.

Yes, it is difficult at the moment. But honestly, what price do you expect in 1, 3, 5 years? If your opinion is that soon we will refuel at 1.30€ again and get heating oil for under one euro, then so be it. But I would not base it solely on hope, and politically, cheap prices for fossil energies are just as unwanted as the currently high ones. And then the matter of the renovation. With the big house, you at least have the option to move regularly and renovate only parts at a time. But do you really want that? And don't forget, you then have craftsmen (= strangers) in the house every day making noise and mess. I would, if possible, have all indoor work done before moving in. Then you can hand them the keys and let them make a mess.

You can also have the underfloor heating installed in advance and then fully switch to a new heating system later. That way you don't have to tear up the floors in an already inhabited house. On this occasion, the water-carrying pipes can also be checked and, if necessary, repaired/replaced. Friends of ours had a burst pipe two months after moving in. Probably caused by the replacement of a washbasin and toilet, which caused the pipes to be moved too much. The ground floor was unusable for almost a year.