Reading a drawing - height information?

In our drawing, the kitchen window has a sill height of +1.06 m. For me, this means a sill height of 1.06 m from the finished floor. With a kitchen height of 0.91 m, there would still be 15 cm left for, for example, sockets. This is also how the kitchen planner calculated. Now the bricklayer said that the sill height refers to the shell construction and that 20 cm would still be added to the raw floor for underfloor heating and screed. Then the window would only be 86 cm high and thus 5 cm lower than the kitchen worktop. That can't be right. What is correct?

Well, this will be funny if all the windows are too low. Of course, this refers to the finished floor level.

No, but you have to clarify whether the dimension refers to the raw floor or the finished floor. Since these drawings are often also the basis for the masonry work, the likelihood is very high that it refers to the raw floor.

By the way, a parapet height of 86 cm in the finished state means that you should clarify how high the window casement will be, then you could lead the kitchen countertop into the window recess instead of the windowsill.

If he has architectural plans, it is the finished floor dimension. If this had to be clarified for every construction project, someone would surely have thought by now whether it could be standardized.

Well, then should post her plan. I have already seen far too many plans where this was either not clearly communicated or indeed still from the bare floor .. repeatedly here in the forum.

For us, it was quite clearly RFB - raw floor, precisely because the plans go to the bricklayers first. The exact finished floor height is often not yet known in detail. Bundling cables, water pipes, and heating, you simply make the screed one or two centimeters thicker.