Stains on exterior plaster when exposed to sunlight

Hello, on the side of the house you can see strong unevenness in sunlight, what could that be caused by, do I have a claim for repairs here. Painting alone will not be enough. Regards

The tolerances in this area are extremely high. As a rule, there are no claims there. This is the result of thin-layer plaster systems. You will probably have to come to terms with it and simply not look too closely in raking light ;-)

Hello, on the side of the house you can see strong unevenness in sunlight,

Strong is relative ;-) But it is normal for the majority of plastered facades - it is particularly noticeable with grazing light, as with interior walls.

Wait a minute, that is an exterior wall, so that is absolutely TOP. You will hardly find a house that looks different/better in sunlight.