Length and width of the house and perimeter insulation

Hello everyone,

I have the following question: I am building a single-family house, 8 by 11 m, with a base slab and a 36 cm brick. Before completing the frost skirt, the perimeter insulation was already installed, see picture. The perimeter insulation was about 7.97 m long in width and 10.99 m in length, so it did not correspond exactly to the width and length of the house. According to the construction performance description, the brick closes flush with the perimeter insulation, only the exterior plaster will protrude about 2-3 cm over the insulation. The general contractor believes that the difference between the length and width of the perimeter insulation on one hand and the planned length and width of the house on the other hand is normal, since "the concrete of the base slab will still expand." Is this correct, or do you have a different opinion? Thanks in advance for your feedback

Would you recognize anything in the photo? Be honest :p
Your GU might be right. I mean, how much are we talking about here, 1 cm and 3 cm?

You’re still too uptight :-)

Apart from the photo, there is the saying "the bricklayer is happy when he stays on the property"...