Bangalore first-timers: What's your must-do site visit checklist?

Okay I'll be honest — I completely underestimated how confusing this process is. I'm a first-timer looking for a 2BHK in Kaggadasapura or Doddanekkundi, maybe Keya Homes. Site visit pe kya kya dekhna chahiye, yaar? Log bolte hain bohot hidden costs hote hain. Koi real experience se tips do, please.