A flat owner in Pune is seeking guidance on calculating the carpet area for their exclusive terrace flats during building redevelopment, as per RERA Maharashtra and PMC rules. They purchased the flats in 1993 and 2004, with exclusive terrace rights documented. The owner wants to know how the builder should count the carpet area and what to ask for regarding the terrace area in the redevelopment proposal, considering the builder has offered 30% extra carpet area. Advice is sought on consulting an advocate or architect and negotiating the terrace area percentage.