I see this as well with huge modern buildings with wood parts. They look great the first year. The wood shines red’ish. After a winter the wood part starts to grey out. I understand that this is sometimes a look they strife for but all the preview renders show it in the prestige condition. Nobody is doing a yearly training. And don’t get me started on all the glass survives for elevators, roofs, bus stops, divider panels next to tram stops (I’m mainly meaning Berlin here) which nobody cares to clean or is so difficult to clean that after 2 or 3 years it looks very run down.