Hidden costs buyers only discover after possession

The real cost of a new flat isn't just the sticker price, it's the snag list after possession. I'm so fed up of renting, my landlord raised rent again, so finally taking the plunge in Noida Extension. Looking at places like Vihaan Krystal Heights, but honestly not sure what to expect post-handover. What's the *reality* of construction quality once you get the keys? Do you start seeing cracks, seepage, or fitting issues within a year? For investors, these snags mean extra repair costs and delay tenant move-ins. Has anyone here faced major issues during the final walkthrough or within the first year in Noida Ext? What should I specifically look for during the snagging process? Does a long snag list really impact initial rental yield or future resale value?