Partial renovation of a 2002 corner terraced house experiences?

Dear building experts,

We own an end-terrace house built in 2002 (approx. 130 sqm; basement + 3 floors; still the original gas heating; no photovoltaic system, which according to the county energy advisor is due to the limited roof space because of the dormer). We have two small children, which is why we have not renewed the kitchen so far, but this will now become due. And this is the trigger for us to immediately consider further (partial) renovations. I will list the thoughts we have had so far in this context:

1) If you remove the kitchen, this is THE opportunity to replace the no longer (so) nice tiles (my wife likes them more, I no longer like them at all). We have the same tiles in the hallway, so they would be replaced there as well. Or do I see it wrong, and it would also be possible to easily replace the tiles several years later, once the new kitchen is already installed?

2) If we decide to replace the tiles, another decision arises: Due to the age of our gas heating system, it is reasonable to assume it has already passed its halfway life. And the future option will naturally be a heat pump (whether with little or no photovoltaic system remains to be seen, but as far as I can judge today, the potential alternatives to a heat pump are not particularly sensible for us. So far, we also have a comparatively low - medium gas demand). In this context, the question is: Does it make sense to consider upgrading to underfloor heating at the same time as the potential tile replacement (if this proves reasonable from a heating technology point of view, of course I do not expect professional advice remotely here!). What I mean is: If you retrofit something like this, then when the kitchen is being done anyway, right, or am I wrong here too? Also: I would not come up with the idea to replace a (well!) functioning and maintained gas heating system now without reason. So the question would also be whether a premature retrofit of underfloor heating (now, while the floor would be open anyway) makes sense at all?

3) If yes to 1) and 2), then this would apply to the whole house, meaning underfloor heating would also be retrofitted in the other rooms and the floors would be replaced on this occasion (laminate out, probably parquet in).

4) Furthermore, we would like to have a non-load-bearing wall between the kitchen and living room removed to create an open living-dining area. I also gladly welcome opinions/notes/warnings on this, if any come to mind spontaneously.

I am professionally and therefore in my expertise as far away from craftsmanship as the North Pole is from the South Pole, which is why I am happy to receive encouragement or warnings from you experts here. But please do not dismantle my possibly naive ideas with your expert knowledge. We are also at the very beginning of our considerations and are currently trying to figure out what the right order is and above all: I would like to know whether our initial thoughts are completely wrong or if we are thinking in the right direction.

Many thanks for your feedback!

Everything is possible. I just see the problem that you probably want to live in the house during the renovation. Installing underfloor heating means either milling the screed or installing new screed and insulation. And throughout the whole house, this is basically only doable if unoccupied. Extremely much dust and dirt.

Even knocking off tiles on the ground floor already creates a lot of dust. But it's doable if you then live upstairs.

If you don't move out for the renovation, I would say goodbye to the underfloor heating.

that you probably want to live in the house during the renovation.

I thought about that too. Or rather to rent a holiday apartment for a cheap flat rate for the time. Underfloor heating also makes sense with gas. However, you could also replace a floor covering with a new kitchen, then you simply stop under the kitchen plinth. But that is pointless if you want to replace the underfloor heating anyway.

As so often, the question is very vague. There is simply too little information to answer it. You don't have a plan for that.

Either, that would be the best solution, you deal with it and make a plan yourself. Then you have everything under control.

Or you have to outsource the planning. Rather bad, because they could talk you into all sorts of things.

I would get a heating engineer to take a look at the situation. Maybe even 2 or 3 different ones.

Otherwise, with your existing gas heating system, you have an inexpensive and reliable heat source. Just keep it running.

Back and forth empties pockets.

Thank you for the answers. , I agree with you. And that's exactly why we are starting to make a plan for ourselves. To clarify again: I would NEVER replace the functioning gas heating. However, I have to redo the kitchen; we have been using it longer anyway because we didn't want to replace it while the children were SO small (anyone with children knows why). And when replacing the kitchen, the question was whether we should do the rest at the same time or at least prepare for it. The crucial question is whether our current radiators could be operated well with an air-water heat pump, meaning without underfloor heating. I can imagine that, but it will be professionally checked. If that is the case, the question about underfloor heating would be irrelevant.

we own a terraced end house built in 2002 (approx. 130 sqm; basement + 3 floors; [...] We have two small children, which is why we haven't renovated the kitchen so far, but it will now be due soon. [...] 1) If you remove the kitchen, this is THE opportunity to replace the no longer (so) beautiful tiles (my wife likes them more, I don't like them at all anymore ;-) ). We have the same tiles in the hallway, which is why they would then be replaced there as well.

Who is the kitchen boss – her or you? – Question settled, I assume. Then the tiles in the kitchen and hallway simply (finally?) won’t match anymore. I would plan with the horizon of changing the house around the children’s graduation / driving license / training.