RERA registration is mandatory as it provides legal authorization to operate as a real estate agent or promoter in India. It ensures that only registered professionals are allowed to participate in property marketing, sales, and related activities under the Real Estate (Regulation and Development) Act.

It also enhances trust and credibility among buyers and investors by ensuring transparency and accountability in real estate transactions. Compliance with RERA helps protect agents and developers from penalties, legal action, and regulatory issues.

In addition, RERA registration allows access to approved and registered real estate projects, ensuring safer transactions. It also ensures adherence to state-specific real estate laws and regulatory requirements, promoting fair practices in the industry.