Khud ke liye property: RE professional ki tension

MG Road — dekh raha hoon kuch options. I work in real estate, but khud ke liye buying is different yaar. Builders ka hidden charges ka game toh pata hai, but possession pe kya unexpected aata hai? GTM Builders mein super area vs carpet area ka kitna game hota hai? Construction-linked payment plan mein kya catch ho sakti hai?