What does "wenn" mean?
It is not so simple for someone who is making the biggest investment of their life and is completely dependent on the expertise of specialists. For example, sampling for a move-in ready house. There is the construction service description for this, which states, for example, floor tiles brand Villeroy and Boch, series xy, price up to 30 € per sqm, size 60x30 cm and Jolly rails aluminum at building materials dealer xxx in town xxx. The client goes to the building materials specialist dealer, the friendly consultant looks in the sampling folder to see what the planner from the general contractor selected, shows the client in the showroom the sampled tiles for project x from general contractor xxx for house 11. The client chooses the color from series xy, is satisfied with the shown aluminum rails, goes home, happy about the great consultation. The nice consultant faxes or emails the selection list to the general contractor. The general contractor commissions the tiler. I remember that the prices per sqm of living space for a simple house at that time were given depending on the region between 900 euros and 1200 euros. That is a difference of 25%. If the margin for the general contractor is 15%, then it is his fault if he has costs of 1100 euros but sells for 900 euros. There should be merchants in the general contractor’s office who master this. Any master bricklayer can do that. Question: how is the client supposed to know this as a layman and why should the client bear the cost of miscalculation?