The decision to buy a home involves years of savings and a significant legal commitment. Project delays, fund diversions, and misleading property measurements have historically left buyers with little legal recourse. The Real Estate (Regulation and Development) Act, 2016 brought a structured accountability framework to India’s property market. The Tamil Nadu Real Estate Regulatory Authority, known as TNRERA, enforces this law and governs the complete RERA registration framework in Tamil Nadu. Every serious homebuyer must understand how this system functions before dealing with any Builder, signing any document, or making any payment. For those planning to construct after purchase, working with a Residential Architect from the outset ensures the project meets all regulatory requirements.
What TNRERA Registration Covers
Not every project falls under TNRERA’s jurisdiction. The registration requirement applies to projects where:
- The land area exceeds 500 square metres, or
- The total number of apartments exceeds eight units
Developers must complete this registration before advertising, marketing, or selling any unit. Launching a project without prior TNRERA registration is a legal violation.
Once registered, the developer must publish all project details on the TNRERA portal. The following information becomes publicly accessible:
- Sanctioned plans and layout approvals
- Legal clearances from relevant authorities
- The officially declared project completion timeline
Buyers can verify this information directly on the TNRERA website. Search for the project using its name, the promoter’s name, or the TNRERA registration process portal’s RERA registration number under the Registered Projects of Tamil Nadu tab. Complete this verification step before any financial commitment is made.
The 10% Advance Cap and the Builder Buyer Agreement
Carpet Area covers only the floor space within an apartment that a resident can actually use. It accounts for the area enclosed by internal walls, while excluding external walls, service cores, balconies, verandahs, and open terraces. This definition eliminates the long-standing practice of quoting inflated super built-up area figures. Buyers pay only for usable space, and developers cannot redefine this measurement to increase the quoted price.
Before a developer collects any advance beyond 10% of the property cost, a signed and registered Builder-Buyer Agreement must be in place. This is a firm legal requirement, not a formality. The Builder Buyer Agreement, commonly referred to as the BBA, is the primary contract binding the buyer and the developer. Four clauses require particular attention before any signature is given:
- Earnest Money Clause: Confirms the booking amount does not cross the statutory 10% limit
- Project Completion Timeline: States the exact possession date and specifies penalties applicable to the developer for delays
- Indemnity Clause: Confirms protection from title disputes arising from third-party claims on the property
- Cancellation and Refund Clauses: Define a clear process for both the buyer and the developer
TNRERA provides model agreements, but developers frequently modify them. Independent legal review of the BBA before signing is strongly advisable.
Also Read: Real Estate Experience : The Collaboration of Dwellion Architects and Beyondinfra Pvt Ltd.
Escrow Accounts: How Your Funds Are Protected
Fund diversion remains one of the most common causes of stalled real estate projects across India. RERA addresses this through a mandatory escrow requirement. Developers must deposit a minimum of 70% of all funds collected from buyers into a dedicated escrow account. This account exists solely for land and construction costs tied to that specific project. No portion of these funds can be redirected to other ventures.
Withdrawal from this account follows a strict certification process. Each withdrawal must be independently approved by three professionals:
- A licensed Engineer
- A registered Architect
- A Chartered Accountant
Each professional must certify that the withdrawal corresponds to the actual percentage of construction completed on site. This three-party requirement removes any scope for arbitrary withdrawal and gives buyers a transparent financial audit trail across the entire construction period.
Making an Informed Decision
TNRERA changed the terms of engagement in Tamil Nadu’s real estate sector. Registration verification, BBA scrutiny, and escrow fund monitoring are no longer optional steps for a careful buyer. They form the legal foundation of any sound property purchase. Buyers who follow this process retain the legal right to claim compensation or demand a full refund when developers fail to deliver within the agreed timeline.
Regulatory compliance sets the boundaries. The right architect works with them from day one. Partnering with top architects in Chennai like Dwellion brings both design excellence and to get regulatory awareness to residential and commercial projects across India and beyond. Contact us today.



