Short answer: ask the seller for the layout approval letter and the approved plan, then check them on the government site. Layouts approved from 2022 onwards are listed on the Tamil Nadu single window portal, onlineppa.tn.gov.in, under Approved Plan List. Then check that the local body has sanctioned the layout, that the roads and park were handed over to it, and, for a layout bigger than 500 square metres, that it is registered with TNRERA.
This guide is for anyone buying a residential plot in Tamil Nadu. It was checked against the official DTCP, CMDA, single window and TNRERA websites in October 2026.
DTCP or CMDA: who approves layouts
- DTCP (Directorate of Town and Country Planning) approves layouts in all of Tamil Nadu outside the Chennai Metropolitan Area, through its regional offices and local planning authorities.
- CMDA (Chennai Metropolitan Development Authority) approves layouts inside the Chennai Metropolitan Area, which now reaches into Tiruvallur, Kancheepuram, Chengalpattu and Ranipet districts.
So a plot in Namakkal, Coimbatore, Trichy or Madurai needs DTCP approval, and a plot in or around Chennai needs CMDA approval.
Approval happens in two stages
A layout is not fully approved when the planning authority signs the plan. DTCP's own advice to buyers is to check both stages:
- The plan is approved by DTCP (or CMDA) with an approval number and date.
- The local body sanctions and releases the layout, after the developer hands the roads and the park or open space to the panchayat or municipality by a registered gift deed.
A layout that has only the first stage is not finished. Ask for proof of both.
How to check the approval online
Layouts approved from 2022 onwards
- Open onlineppa.tn.gov.in/approved-plan-list, the Tamil Nadu single window portal.
- Choose the department: DTCP, Rural Panchayat or Town Panchayat.
- Choose the approval type: Layout Approval.
- Choose the district and the year of approval, and search.
- Find the layout by its application or approval number. You can open the approval letter and the approved plan.
Match the approval number, the village and the survey numbers with the papers the seller gave you, and find your plot number on the approved plan.
Older DTCP layouts
Layouts approved before the single window are not on that list. DTCP's website (tcp.tn.gov.in) links to its land use and layout records, and you can get a certified copy of an approved layout from the DTCP office for a small fee. A lawyer doing your title check can do this for you.
CMDA layouts
CMDA publishes its layout approvals year by year on cmdachennai.gov.in, and the approval letters for online approvals are on the same site.
Papers to ask the seller for
- The layout approval letter and the approved plan, with the approval number and date.
- The local body's sanction or release of the layout.
- The registered gift deed handing the roads and park to the local body.
- The patta for your plot, in the seller's name.
- An Encumbrance Certificate for the plot.
- The TNRERA registration number, if the layout is bigger than 500 square metres.
- For an old unapproved plot that has been regularised, the regularisation order.
Check that the plot number and survey numbers on these papers match each other and the approved plan.
Check TNRERA registration
Under the Real Estate (Regulation and Development) Act, 2016, a plotted layout on more than 500 square metres of land must be registered with the Tamil Nadu Real Estate Regulatory Authority before it is advertised or sold, and the advertisement must show the registration number. To check:
- Go to rera.tn.gov.in.
- Open Projects, then Registered Projects, then Layout.
- Find the project by promoter name, village and survey numbers.
The same site lists projects that were rejected, penalised or named in a public caution notice. Check those lists too.
If the plot is not approved
- "Panchayat approved" is not layout approval. A panchayat letter or no-objection certificate is not DTCP or CMDA approval.
- Old plots can be regularised. A plot in an unapproved layout that was sold by registered deed on or before 20 October 2016 can be regularised under the 2017 rules. Owners of individual plots can apply online at onlineppa.tn.gov.in, and DTCP has said these applications are taken without a time limit.
- Newer unapproved plots carry real risk. Sub-registrars can refuse to register unapproved plots that are not regularised, banks rarely lend on them, and you may not get a building permit.
If the seller cannot show approval or regularisation, have a lawyer check the plot before you pay any advance.
Red flags
- The seller shows an approval number but will not give you a copy of the approval letter or plan.
- The approval number, village or survey numbers do not match the official record.
- Your plot number is missing from the approved plan, or the plan shows a road or park where your plot is.
- A large layout is advertised with no TNRERA number.
- Pressure to pay a large advance before you have checked the papers.
Next steps
Once the approval checks out, work out what registration will cost with our stamp duty and registration charges calculator, convert plot sizes with the cent to square feet converter, and read how patta transfer works after a sale. To compare plots, see the plots for sale that sellers list as DTCP approved, each with a video tour.
