My first home search: beyond the sticker price

What's the actual budget beyond the quoted property price for a first home in Hyderabad? I'm looking at Salarpuria Sattva's under-construction project near Saidabad, and abhi tak bas property price hi pata hai. Honestly, parents bol rahe hain ki stamp duty, registration, interiors, wiring... sab alag se lagta hai. Site visit pe kya kya important cheezein hain jo builder nahi bataega? Aur Salarpuria Sattva ka delivery track record kaisa hai, especially for first-time buyers like me? Thoda nervous hoon.