Hello, Chrischan,
a little addendum from me: I believe that, as a rule, one should listen to oneself to see whether one is more the new-build type or rather the renovation type. We ourselves bought an old house, but with few renovation measures. The advantage of an existing property is, for example, that you have 30-year-old trees in the garden from day one, everything is finished, everything fenced in, local amenities are available, etc., etc.
In the residential development, you may have construction noise for 10 years, eventually the street will be done, and by the time you have shade in the garden, you are old. ;) I usually don’t like the locations and the appearance of pure new-build areas either; that wouldn’t be for me because I want to have amenities around me for living.
Furthermore, from a professional point of view, I believe that the value retention or value development in some residential areas/new-build areas will not develop in the interest of the owners. Therefore, it is quite possible that a well-maintained semi-detached terraced house may still be worth more in 30 or 50 years than a 30 or 50-year-old house in a new development area where no one wants to live anymore.
Best regards
Dirk Grafe