Site visit secrets for spotting construction flaws early

Landlord ne phir rent badha diya, yaar. Fed up paying EMI for someone else's asset. Finally taking the plunge in Gurgaon, maybe Signature Global Cloverdale SPR. Builders ki construction quality pe bahut confusion hai. Log bolte hain cracks, seepage after a year common hai. Kya tricks hain to spot bad quality during under-construction site visits? Like, foundation mein kya dekhein ya finishing pe dhyan kahan dein? Maintenance charges bhi baad mein value for money milte hain ya bas naam ke? Koi investor tips do, please. Hope this helps someone.