A Chennai schoolteacher nearly paid a two lakh rupee booking amount for an apartment off Old Mahabalipuram Road on the strength of a glossy brochure and a confident sales pitch. Before she signed, a cousin asked one question: what is the project's RERA registration number? The salesman gave a number that, when typed into the Tamil Nadu RERA portal, returned nothing. She kept her two lakhs. That single free search is the most powerful ten minutes of due diligence a Chennai buyer can spend.

The short answer. Tamil Nadu RERA, known as TNRERA, maintains a public register of approved projects that any buyer can search free at rera.tn.gov.in, with no login needed for a basic check. Under the RERA framework, a project larger than 500 square metres or with more than 8 units must be registered before it is advertised, marketed, booked, or sold, so an unregistered project asking for a booking amount is itself a red flag. The trade-off is only your time: ten minutes of searching against the risk of a deposit in a project that may not legally exist yet. Verify the registration number, the promoter name, and the validity before any money moves.

What is TNRERA and why does registration matter to a buyer?

TNRERA is the Tamil Nadu Real Estate Regulatory Authority, the state body created under the national Real Estate (Regulation and Development) Act to bring transparency and accountability to property sales. Registration matters because it is the line between a project the law recognises and one it does not. Under the RERA framework, a project above the size threshold must be registered before the developer can advertise, market, book, or sell units, which means the registration number is not a formality but a legal precondition for taking your money. A registered project binds the developer to declared timelines, transparent financial disclosures, and construction milestones, with penalties for non compliance. For buyers coming from the due diligence habits in our guide to reading a Chennai encumbrance certificate on TNREGINET, the RERA check is the natural companion: one confirms the title history, the other confirms the project's legal standing.

Which projects must be registered under TNRERA?

The threshold decides whether registration is mandatory. According to the buyer guidance published by Sobha, Tamil Nadu mandates that projects exceeding 500 square metres or involving more than 8 units must be registered with TNRERA. This mirrors the national standard set by the parent Act, and it is why most apartment projects a Chennai buyer looks at will fall inside the net, while a very small standalone build may not. The practical takeaway is simple: for any apartment project of meaningful size, a valid registration should exist, and its absence is a question you must ask before, not after, you pay. Because thresholds and their interpretation can carry nuance, confirm a specific project's status directly on the TNRERA portal rather than relying on a salesperson's assurance. Ongoing projects and each new phase of a large development generally need their own registration too, so a promoter who shows you a certificate for phase one has not thereby covered the phase two tower you are actually buying into. Ask which specific registration covers the exact unit and block you are purchasing, and match that entry on the portal. The threshold exists to protect buyers in projects large enough to carry real money and real risk, which is precisely the size of purchase where a missing registration should stop you cold.

How do you verify a project on the TNRERA portal step by step?

The process is free, public, and quick. The Sobha guidance and the TNRERA portal itself let you search the register of approved projects using the project name, the developer or promoter name, the project location, or the registration number, with no login required for a basic search. Once you find the project, review the registration number and certificate, the declared project completion date, the promoter credentials on record, the current construction status, and the legal clearances such as land title and building permits. The portal also lets you download or view the registration certificate, which is the document you keep in your own file. The habit that protects you is cross checking: type the number the salesperson gives you and confirm the promoter name and project match exactly what you were shown. If you have only the project name, search that first, then work back to the registration number, because a genuine project will return a single clean match rather than a confusing spread of similarly named entries. Screenshot or download the result the same day, since a page you saved is evidence you control, while a promise made across a sales desk is not. If the portal is briefly unavailable, wait and retry rather than accepting a printout the developer hands you, because the only copy worth trusting is the one you pulled yourself from the official source.

What details should you check once you find the project?

Finding the project is only half the job; reading the entry is the other half. Confirm the registration number matches the one you were quoted, and that the promoter name on the register is the same legal entity you are contracting with, since a mismatch between the marketing brand and the registered promoter is a common trap. Note the declared completion date, because that date is the one that anchors your delayed possession rights if the developer overruns. Check whether the registration is currently valid rather than expired, and whether the project carries any flags such as cancellation or complaints. The register turns vague sales talk into checkable facts, and every field you confirm is one less surprise after you have paid. This is the same discipline that reading the Tamil Nadu guideline value on TNREGINET brings to pricing.

How does a registered project compare with an unregistered one?

The contrast is stark once you see it laid out. A registered project has accepted a set of legal obligations in exchange for the right to sell, while an unregistered one has not yet crossed that line, which changes your footing on timelines, disclosures, and recourse. The table frames what changes for you depending on whether the project is on the TNRERA register.

What should your TNRERA verification checklist cover?

1. Ask the salesperson for the exact TNRERA registration number in writing before discussing money.
2. Search rera.tn.gov.in by that number and separately by the project and promoter name.
3. Confirm the promoter on the register is the same legal entity named in your agreement.
4. Note the declared completion date, since it anchors your delayed possession rights later.
5. Check that the registration is currently valid and not expired, cancelled, or flagged.
6. Download or save the registration certificate and the project page for your own records.
7. Refuse to pay any booking amount until the registration is confirmed on the portal.

How does a RERA check fit the rest of Chennai due diligence?

A RERA verification is necessary but not sufficient on its own, and honest buyer guidance says so plainly. Registration confirms the project's legal standing and the developer's declared promises, but it does not by itself guarantee the title is clean, the guideline value pricing is fair, or the construction quality will match the sample flat. That is why the RERA check sits inside a wider routine alongside the encumbrance certificate for title history, the guideline value for pricing sanity, and the patta and approvals for land status. Think of TNRERA as the gate you pass first: if a project is not registered, the other checks are moot because you should not be paying yet. Once it clears the gate, the rest of your diligence begins. The strength of RERA is transparency, and the limit is that transparency still needs a buyer willing to read. A useful sequence for a Chennai purchase is to run the RERA check first, then pull the encumbrance certificate to trace the title, then read the guideline value to sanity check the quoted price, and only then negotiate seriously. Each step answers a different question, and skipping the RERA gate to save time is the false economy that costs buyers the most, because a booking amount paid into an unregistered project is the hardest money to chase back. Ten minutes on the portal is cheaper than any lawyer you would need afterward.

Is it free to check a project on the Tamil Nadu RERA portal?

Yes. Verifying a project on the official TNRERA portal at rera.tn.gov.in is free and open to the public, and a basic search needs no login. You can search by project name, promoter name, location, or registration number, then view or download the registration certificate for your own records before you commit any money.

Which projects must register with TNRERA in Tamil Nadu?

According to Sobha's buyer guidance, projects exceeding 500 square metres or involving more than 8 units must be registered with TNRERA, mirroring the national RERA standard. Most apartment projects of meaningful size fall inside this net, so confirm a specific project's status directly on rera.tn.gov.in rather than relying on a salesperson's word.

What should I do if a project has no RERA registration number?

Treat it as a serious red flag and do not pay a booking amount. Under the RERA framework a qualifying project must be registered before it is advertised, marketed, booked, or sold. Ask the developer directly for the number, verify it on rera.tn.gov.in, and walk away from any project that cannot show a valid, matching registration.

Does RERA registration guarantee the project is a safe buy?

No. Registration confirms legal standing, declared timelines, and disclosures, and it gives you a complaint route, but it does not by itself prove clean title or fair pricing. Pair the RERA check with an encumbrance certificate, the guideline value, and land approvals so your diligence covers standing, title, and price together.

Last updated 2026-07-11. PropNewz Team.