ᐅ Semi-detached houses built one after the other, but not identical in design?

Hello,
we are planning to build a semi-detached house (basement, ground floor, attic). Our semi-detached house partner will probably start later (also with a basement), and it will not be exactly the same design (but it is not a completely different house type).
Do you see any problems (financial, visual, legal, technical) with building them one after the other, with about a six-month gap?
I thought this was quite common, since at least in the private sector it is often the case that one semi-detached house is added to an already existing one.

Thanks for your assessment and experiences.

Good evening,

Bader schrieb:

Do you see any problems (financial, aesthetic, legal, technical) with building one after the other (with a six-month delay)?

Aesthetic, legal (if a staggered start is allowed according to the development plan), and technical: No.

Financially: Yes, if there is a winter between your build and that of the semi-detached partner. In that case, you should insulate the party wall (wall shared with the neighbor) to avoid excessive heating costs during the cold season. This also means you bear the cost of dismantling when the partner starts their construction.

Question: if both semi-detached partners are known, why not build at the same time?

Regards, Bauexperte

Our construction partners have not progressed with their planning yet, so they could only start next year.
What costs should we expect for the additional insulation and the dismantling (is that really necessary, wouldn’t it be enough to simply improve the insulation)?
But for the architect designing the second house, it shouldn’t be a problem to refer to the first house (even if it’s not the exact same profile) and create a harmonious overall design, right?

If the architect agrees and your semi-detached neighbor is on board as well, then it’s possible. Maybe they have other ideas too...

Bader schrieb:

But for the architect designing the second house, it shouldn’t be a problem to take the first house as a reference (even if not identical in profile) and create a harmonious overall structure, right?

Have a look at your current development plan. It is rather rare that semi-detached houses are allowed to be built with different profiles.
If you are truly permitted to build differently, your neighbor doesn’t really have to pay attention to you – whether the result looks harmonious in the end is a matter of personal taste anyway.

Wastl schrieb:
It is rather the exception that semi-detached houses are not allowed to be built identical in design.

Don’t you mean "have to"?