Ghaziabad site visits are useless if you don't know what to ask

Since last Diwali, I've been project-hopping in Ghaziabad. First-time buyer hoon, Sanjay Nagar mein Universal Infratech ke projects dekhe hain. Site visit pe kya important cheezein check karni chahiye? Builder toh sab acha hi batata hai. Water pressure, cell network, society maintenance... kya kya poochna hai jo woh nahi batayenge? Honestly, samajh nahi aata kya priorities honi chahiye.