Build a wooden workshop attached to the house

Hello,
we will soon have a timber frame house with insulation built.
I would like to build a workshop myself, also in timber frame construction, with a ventilated wooden cladding. Since space is limited, it would be advantageous if the workshop could be partially attached to the house.
The workshop should not be built on a concrete slab but on a wooden floor about 20 cm above the ground, supported on point foundations.
Now to my question, how should I connect/attach the workshop to the house so that the wood does not rot and the connection remains dry?
I would be very grateful for a few tips.

Best regards
Olaf

Let the exterior wall of the house become the interior wall of the workshop. Clean roof connection and that's fine. I don't know how it looks with the approval requirement.

The connection to the building does not run along the entire length of the workshops. And what exactly would the connection at the roof look like.

And what exactly would the connection on the roof look like.

You make it easy for yourself if you use a system like Waka, for example. Take a look around there.

I was aware of the profile over the roof to drain water. But thank you for the hint. However, the workshop is to be heated and I do not know how to connect the timber frame structure to the house wall. Especially if I use the house wall as a wall for my workshop, no joints should be created where heat can be lost. Best regards, Olaf

But now it is theory! For that, one would need to know the construction of the exterior wall of the house (section), heat pump planning. Otherwise, it is difficult to respond seriously from a distance.