Builder quality checks need an expert eye, not just a list.

I work in real estate but buying for myself, especially in Bangalore, is a different ball game. I'm looking at Sattva Aqua Vista and trying to be extra careful. Builders often hide so much during possession, especially with finishings. Matlab, they'll give you a 'snag list' but what about hidden issues like seepage after a monsoon or plumbing problems that surface months later? I'm worried about actual construction quality, not just cosmetic stuff. What are the key things to look for during possession walk-throughs? Any red flags you guys faced with fittings or wall cracks after a year? Kaunsi cheezein pe focus karna chahiye?