Which floors are suitable for single-family homes? What does the home-building elite recommend?

For the currently planned new build, I will also buy master grade B-stock parquet, so I don't want to missionize you either, so I possibly won't end up empty-handed ;)

ah, colleague, when is the excavator coming to you? Just to be safe, I'll claim for you that my cheap second-choice master floor has just stacked itself vertically in front of me. Neveeeer again! Only first choice, premium... just like I am myself... at least that's what the best of all wives says!

...just like I am myself.... at least says the best of all wives!

:D ... for me, the excavator will take a little longer.... but you are also premium with me! ;)

Thank you for the supportive anti-missionizing ;)

2nd choice does not seem to be so easy. The selection is very limited and the available quantity is sometimes restricted to a few packages.

Since I am completely new to the parquet business and unfortunately have to question everything scientifically (inborn condition), I have come across many small problems with parquet. Generally, people think parquet is less durable but can be renovated a few times without having to remove the entire floor. Damage can romantically be dismissed as traces of life.
However, many parquet floors are so thin that they cannot be sanded (wear layer 2.5mm). Others can be sanded at least once (wear layer 3.5mm), but are significantly more expensive. Even thicker ones are less suitable for underfloor heating and even more expensive. The craftsman-friendly option with floating installation cannot be sanded at all because sanding causes vibrations that can destroy the connecting parts of the floating floor. This usually means the professional has to install it, making the floor even more expensive.
The possible surfaces also seem to be a science of their own. Lacquer is durable and easy to maintain, but the surface is plastic, as with other synthetic floors. Scratches are less likely, but then more visible. Oiled floors need to be re-oiled regularly. The recommendation is sometimes once a year. After oiling, do not load the floor for 1 day and do not place rugs or furniture. Oiled parquet seems to be trendy, but to me it seems impractical to move out the furniture once a year and not be able to use the living room for a day each year. The advantage is that small scratches are not so easily visible and the oil already masks some, so sanding is needed less often or never.
Parquet yes or no is therefore much too simplistic. How did you do it?

How did you do that?

Super simple: I looked at what I like. And if I can afford it. And if it works with underfloor heating. With three times "yes": bought. Satisfied. Period.

Your science is a bit silly. It depends on what is important to you. As with everything, there is no magic all-in-one parquet floor.

Parquet is not a science. If you like it, then it's ok. Sanding is theory, practice only after 40 years or more. Oiled is beautiful, there are care products that you put into the mop water. Today there is also lacquered parquet that you don't recognize as lacquered. 2.5mm two-layer parquet glued down is actually enough. Gluing with a click system can be done by any layperson.

Dr. Hirschhausen calls this the "too much-itis." Every building material and construction method has advantages and disadvantages. The search for the jack-of-all-trades only leads to dissatisfaction. I needed about 180sqm; there was only one type of oak parquet that fell within the desired visual spectrum. I then looked at it in the original, and it was matte-lacquered (UV-oiled according to the master), although I actually wanted it oiled. After I got more information about it, I found out that it actually is like I like it from a usage perspective. Bought it – fits! If necessary, you can always roll the dice. :D For example, I know exactly that I would never sand a prefinished parquet. Scratches, dents, etc. can happen, but in wood you can see that in my opinion; less so with tiles. Sanding definitely costs about €10-15/sqm plus re-oiling/lacquering, that’s a quick calculation for me if the new (second choice) floor would cost only 25sqm and I can simply lay it. I will never sand a wooden floor again, and often this sounds more like a sales argument than a necessary feature for me. The good thing about the second-choice purchase is that you don’t have to worry about many things because not everything is available... marvelous... :D Regarding the oiled yes/no, the curse turned into a blessing, because this matte-lacquered finish is basically oiled through a certain process (I forgot/call to the master). The floor is matte and doesn’t look like glossy lacquered, and it doesn’t require this elaborate care. Take a look at it somewhere. It is and remains a floor, and one probably shouldn’t be quite so picky. As I already wrote, I once knew a tile shop that had poured gravel/small stones on the wooden floor in the showroom for a few weeks to achieve a certain look. Swept clean, cleaned, and oiled, and the somewhat special wooden floor was finished. I once had one painted solid color... also nice. Underfloor heating always works, as long as you don’t run around all day with a thermometer and document key figures. I even know of underfloor heating under 35mm thick plank floors; here it is under floating parquet and works well too. As always, there are several ways to Rome...