ᐅ What degree of deviation is acceptable when laying masonry?

We visited the kitchen installer today and then went to the construction site where the ground floor was completed this week. We noticed that the kitchen measurements differ slightly from the original plan. According to the plan, the kitchen should be 2.995 meters wide, but I measured 2.909 meters along the wall and about one centimeter more at the transition to the dining area.

I understand that masonry work isn’t exact to the millimeter ("the bricklayer is happy as long as he stays on the property..."), but around 8 centimeters seems a bit much to me. Is this still acceptable, and what would be the best way to handle this? Should I ask the general contractor to have the bricklayers on the upper floor re-measure more carefully? In principle, I could live with a kitchen width that’s about one handbreadth smaller.

I would refer to DIN 18202.

Is the entire room smaller as a result? Or did the deviation already occur in the factory plan?

8 cm (3 inches) is far beyond any tolerances.

If someone plans a kitchen at 2.995 m (9 feet 10 inches), I’d rather not ask.

gutentag schrieb:

Does that make the entire room smaller?

That seems likely, unless the opposite wall has also been moved accordingly.

Is the wall thicker, or crooked, or is the room behind actually larger? 🙄

9 cm (3.5 inches) off target is unacceptable.
Is there no site manager?

I don’t know if the room behind is larger. Unfortunately, I didn’t think to measure everything thoroughly. In general, I would assume that some parts are missing; the plans are full of 40cm (16 inches) walls, but the bricks are 42.5cm (17 inches) long (question: would this still be considered a minor change?). However, this alone doesn’t explain the deviation.

I never questioned the irregular measurements. They were already included in the initial draft, are part of the building permit / planning permission application, and were incorporated into the construction plan as well.

Please show the construction plan. The bricks are 42.5cm (17 inches), so why is the construction plan showing 40cm (16 inches)? How is anyone supposed to verify that?

You should check the dimension chains.

Here is the excerpt for the ground floor. The construction description also states 40cm (16 inches), so everything is consistent within itself. It just doesn’t match the bricks.