Ansal API, RERA, and my first investment dilemma

Ansal API ka track record Rajkot mein thoda mixed lag raha hai, I'm hearing. Renting se pak chuka hoon, so finally Ansal Aastha Mig Zone, Kalawad Road par ek flat dekh raha. Investment perspective se, builder ka RERA registration kaise properly check karte hain? Sirf website pe number dekhna enough hai kya? Aur builder ka legal history verify karne ke liye kya tips hain? Title verification mein kya steps hain jo log aksar miss kar jaate hain? Don't want to regret later. Kya RERA complaints actually effective hain, ya bas formality?