Even in real estate, buying for myself is tough

Sattva Lake Ridge is on my radar, but I'm wary. I'm in real estate, but buying for myself means double-checking everything. How reliable is RERA registration status for Salarpuria Sattva projects? What hidden clauses should I watch for in the builder-buyer agreement? And what's the best way to really verify title documents here in Hyderabad before paying anything?