Paradise Enclave site visits: What hidden issues to spot for investor ROI?

Budget finalised, loan pre-approved – ab Paradise Enclave ke under-construction projects dekh raha hoon. Site visits par kya specific construction quality red flags dekhne chahiye? From my experience, initial flaws later become big maintenance costs, eating into ROI. Kaise pata chale ki material quality sahi hai ya future mein seepage/cracks ka issue aayega? Investor perspective se advice chahiye.