ᐅ Installing Partition Walls on Hardwood Floors with Underfloor Heating

Hello,

we are planning to create a corner in our living room by building an L-shaped partition wall measuring 3 x 4 meters (10 x 13 feet) with a door, to make a children’s room. The ceiling height is 3 meters (10 feet). The new parquet floor must not be drilled into for two reasons: first, because of underfloor heating, and second, because the partition wall will be removed later.
What options are available? The drywall installer definitely wants to drill into the floor 😕.

We appreciate any tips.

Apartment? Then you will likely need the approval of your landlord due to structural modifications!
Normally, the construction should be fixed to the floor, but under these conditions, it is not recommended...

How thick should the wall be?
If it is intended to be L-shaped, will both ends be attached to a wall?
For soundproofing reasons, the wall should be double-layered on both sides and at least 15cm (6 inches) thick in total (a 10cm (4 inches) metal stud frame plus two layers of 12.5mm (0.5 inch) drywall panels).
Alternatives to drilling? Hardly any... except at your own risk without it.